Recharge Ponds and Recharge Trenches [Inde]
- Création :
- Mise à jour :
- Compilateur : Jaclyn Bandy
- Rédacteur : –
- Examinateurs : Hanspeter Liniger, Rima Mekdaschi Studer
Chaal or Khals (recharge pond) and Khanti (recharge trenches)
technologies_5193 - Inde
Voir les sections
Développer tout Réduire tout1. Informations générales
1.2 Coordonnées des personnes-ressources et des institutions impliquées dans l'évaluation et la documentation de la Technologie
Personne(s)-ressource(s) clé(s)
exploitant des terres:
Joshi Jagdamba Prashad
Naikina Forest Head Council (Gram Panchayat)
Inde
Nom du projet qui a facilité la documentation/ l'évaluation de la Technologie (si pertinent)
Onsite and Offsite Benefits of SLMNom du ou des institutions qui ont facilité la documentation/ l'évaluation de la Technologie (si pertinent)
ICIMOD International Centre for Integrated Mountain Development (ICIMOD) - NépalNom du ou des institutions qui ont facilité la documentation/ l'évaluation de la Technologie (si pertinent)
G.B. Pant Institute of Himalayan Einvironment & Development (G.B. Pant Institute of Himalayan Einvironment & Development) - Inde1.3 Conditions relatives à l'utilisation par WOCAT des données documentées
Le compilateur et la(les) personne(s) ressource(s) acceptent les conditions relatives à l'utilisation par WOCAT des données documentées:
Oui
1.4 Déclaration sur la durabilité de la Technologie décrite
Est-ce que la Technologie décrite ici pose problème par rapport à la dégradation des terres, de telle sorte qu'elle ne peut pas être déclarée comme étant une technologie de gestion durable des terres?
Non
Commentaires:
Like any tool, one needs to use and apply it appropriately. Land users and SLM specialists have admitted that these technologies can be ineffective depending on number, design and site selection for implementation. Recharge ponds and trenches could potentially cause soil disturbance and subsequent land degradation if such measures are not carefully considered by the users.
1.5 Référence au(x) Questionnaires sur les Approches de GDT (documentées au moyen de WOCAT)
Community Forest Management in the Nakina Van Panchayat [Inde]
Van Panchayats or village forest councils are a impressive example of grassroots community management of natural resources, where a specific administrative unit is locally elected by community members who are responsible for the management of activities related to the forest.
- Compilateur : Jaclyn Bandy
Naula Management and Conservation [Inde]
Naulas are shallow, four-sided stepped wells designed to collect water from subterranean seepages or springs and are used to meet domestic water needs by the local communities. Naula management and conservation encompasses a range of activities that preserve their structure and function.
- Compilateur : Jaclyn Bandy
2. Description de la Technologie de GDT
2.1 Courte description de la Technologie
Définition de la Technologie:
Recharge ponds (Chaals or khals) and recharge trenches (khanti) are common methods to catch the surface runoff and increase the infiltration to recharge groundwater and aid in natural spring recharge in the middle mountain regions.
2.2 Description détaillée de la Technologie
Description:
1. The recharge ponds and trenches have been applied in mountainous community forests. There have been about 60 trenches, 1 large and 4 small recharge ponds constructed in the specific sites in the community forest of Naikina. These are ideal areas to implement these technologies, as they encompass the microwatershed/springsheds of 3 springs.
a. Recharge ponds are circular or rectangular dugout structures which were constructed a natural depression area on sloping land. The standard size is usually as follows: Length =3 m, Width =3 m and Depth = 0.7 m, with site specific modifications. Water feeder channels which flow to the ponds helps to harvest additional surface flow. The walls are not vertical but have a 45 degree slope to prevent cave in.
b.Recharge trenches are small rectangular structures of typical dimensions: Length=1.5 m, Width= 1m , Depth= 0.7 m, constructed on sloping land in a staggered manner. The slope of the walls should be not more than 45 degrees, and the size of the trenches and their spacing depends on the slope of the land. In higher slope areas, one should construct smaller staggered trenches with closer spacing. These are generally made in high rainfall areas, as there is an increased danger of overflow. In staggered trenching, the trenches are located directly below one another in alternate rows and in a staggered fashion. These may be 2 m to 3 m long and the spacing between the rows may vary from 3 m to 5 m.
2. Aims/Objectives: The central focus of the technology is water conservation and harvesting of surplus monsoon runoff to recharge groundwater reservoirs, which is otherwise going un-utilized. Additionally, land degradation by water erosion is decreased due to slowing of runoff and increased soil infiltration. Water erosion after intense rainfall affects both onsite and offsite sites, causing soil displacement, increased frequency of landslides, damage to vegetation, agriculture land, and village settlements.
3. Methods: Due to decreased spring discharge in the dry season and high dependency on the springs for drinking water (humans and livestock), the community has implemented these technologies within in catchment areas of 3 essential springs (Bhind, Vaishnavi, and Bagawoti) in the last 3 years.
4. Stages of Implementation: Awareness building, community mobilization, and central planning was done by the head of the Forest Council (Gram Panchayat), Mr. Jagdamba Joshi. Recharge pond and trench construction was done over the course of a month by different villagers that were available to participate. They were incentivized to work with a small compensation of 5.30 USD (400 INR)/day. Activities and inputs included time and manual labor (about 3 days for the large recharge pond, 0.5-1 day for each of the small recharge ponds, and 4 days for 60 recharge trenches) and appropriate land-use planning and management. Primarily, the strategic construction of these technologies and selection in appropriate springshed recharge/catchment areas has led their success. The structures have been placed below the pine forest, (which generates high runoff) and reside in a restored broadleaf forest, which acts like a sponge to retain the runoff water flowing down from the pine forest above. The ponds lies in a natural, leveled depression with gentle slopes around. Broadleaf/oak dominated forest areas have been increasingly supported as technology construction sites, as the placement further improves of groundwater recharge.
To assure long-term effectiveness, maintenance and re-digging of the recharge ponds and trenches is carried out by villagers annually, pre-monsoon.
5. Gram Panchayat, Mr. Joshi has played a key role in informing the villagers of technology design, function and importance for supporting the community forest and subsequent spring recharge. He has previous knowledge of the application of these technologies through first-hand experiences working in the army. The villagers were solely responsible for construction with Mr. Joshi's guidance. The men were mainly responsible for making recharge ponds and the women dug trenches and removed weeds.
6) Technology benefits/impacts acknowledged by the community: moisture conservation, long-term groundwater recharge, spring recharge, reduction of soil-water erosion, improved infiltration and support for vegetation cover and broadleaf/oak forest.
Like: Relatively simple and inexpensive, little external inputs required, effective in short and long-term (provided site appropriate selection and regular seasonal rainfall)
Dislike: Drudgery, time consuming, maintenance required, distance (site of implementation may also be far from village).
2.3 Photos de la Technologie
2.5 Pays/ région/ lieux où la Technologie a été appliquée et qui sont couverts par cette évaluation
Pays:
Inde
Région/ Etat/ Province:
Uttarakhand
Autres spécifications du lieu:
Nakina Village, Pithoragarh Bloc
Spécifiez la diffusion de la Technologie:
- appliquée en des points spécifiques ou concentrée sur une petite surface
Est-ce que les sites dans lesquels la Technologie est appliquée sont situés dans des zones protégées en permanence?
Oui
Si oui, veuillez préciser:
The technologies are located in a community protected forest, which has been under sole village management since the early 1950's.
Commentaires:
A large and small recharge pond above the roadside lies adjacent to a protected oak nursery.
Map
×2.6 Date de mise en œuvre de la Technologie
Indiquez l'année de mise en œuvre:
2016
2.7 Introduction de la Technologie
Spécifiez comment la Technologie a été introduite: :
- grâce à l'innovation d'exploitants des terres
- par le biais de projets/ d'interventions extérieures
Commentaires (type de projet, etc.) :
Mr. Jagdamba Joshi's self-started initiative in his community can be attributed to his personal work experience. While serving in the army, he was trained to build ponds and trenches. Through his own observations and perception of these technologies, he was certain they would help support the depleting groundwater.
3. Classification de la Technologie de GDT
3.1 Principal(aux) objectif(s) de la Technologie
- réduire, prévenir, restaurer les terres dégradées
- préserver l'écosystème
- protéger un bassin versant/ des zones situées en aval - en combinaison avec d'autres technologies
- réduire les risques de catastrophes
- s'adapter au changement et aux extrêmes climatiques et à leurs impacts
- créer un impact social positif
3.2 Type(s) actuel(s) d'utilisation des terres, là où la Technologie est appliquée
Les divers types d'utilisation des terres au sein du même unité de terrain: :
Oui
Forêts/ bois
- Forêts (semi-)naturelles/ bois
- Plantations d'arbres, boisements
Forêts (semi-)naturelles/ terres boisées: précisez le mode de gestion:
- Coupes sélectives
Type de forêts (semi)-naturelles:
- végétation naturelle des systèmes de montagne subtropicaux
- Broadleaf/pine mixed forest
Plantation d'arbres, afforestation: Précisez l'origine et la composition des espèces. :
- Variétés mixtes
Type de plantation d'arbres, d'afforestation:
- plantations de forêts sèches subtropicales - Forêts de feuillus
- Quercus leucotrichophora, Quercus lanata, Quercus semecarpifolia, , Quercus glauca Thumb, Pyrus pasia, Myrica eaculanta and Rhododendron arborium
Est-ce que les espèces d’arbres précisées ci-dessus sont des espèces d'arbre arbres à feuilles caduques ou à feuilles persistantes ?
- forêt de feuillus
Produits et services:
- Bois d'œuvre (de construction)
- Bois de chauffage
- Conservation/ protection de la nature
3.3 Est-ce que l’utilisation des terres a changé en raison de la mise en œuvre de la Technologie ?
Est-ce que l’utilisation des terres a changé en raison de la mise en œuvre de la Technologie ?
- Non (Passez à la question 3.4)
3.4 Approvisionnement en eau
Approvisionnement en eau des terres sur lesquelles est appliquée la Technologie:
- pluvial
3.5 Groupe de GDT auquel appartient la Technologie
- récupération/ collecte de l'eau
3.6 Mesures de GDT constituant la Technologie
structures physiques
- S4: Fossés isohypses, trous
- S5: Barrages/retenues, micro-bassins, étangs
3.7 Principaux types de dégradation des terres traités par la Technologie
érosion hydrique des sols
- Wt: perte de la couche superficielle des sols (couche arable)/ érosion de surface
- Wg: ravinement/ érosion en ravines
- Wm: mouvements de masse/ glissements de terrain
- Wo: effets hors-site de la dégradation
dégradation hydrique
- Hs: changement de la quantité d’eau de surface
- Hg: changement du niveau des nappes phréatiques (eaux souterraines) et des aquifères
3.8 Prévention, réduction de la dégradation ou réhabilitation des terres dégradées
Spécifiez l'objectif de la Technologie au regard de la dégradation des terres:
- réduire la dégradation des terres
- restaurer/ réhabiliter des terres sévèrement dégradées
4. Spécifications techniques, activités, intrants et coûts de mise en œuvre
4.1 Dessin technique de la Technologie
Spécifications techniques (associées au dessin technique):
Bhind Catchment (Springshed) Recharge Technologies
Dimensions
Recharge Pond 1- Length: 2.37m Width: 0.86 m Depth: 0.61m
Pond 1 Volume- 1.24 m3
Slope: 24%
Recharge Pond 2- Length: 4.46 m, Width: 1.71 m, Depth: 0.97
Pond 2 Volume- 7.40 m3
Slope: 26%
Recharge Trench- Length: 2.5m, Width: 0.25 m, Height: 0.35 m
Trench Volume: 0.22 m3
Total Trench Volume (30): 6.6 m3
Spacing: Trenches are in different locations of the Bhind springshed, 20 functional trenches are aggregated within 1m of each other in a broadleaf forest just north on the cucumber farm. 10 trenches are located directly above the Cucumber farm.
Slope Range: 25-30%
Water Holding Capacity (L):
Total Capacity of Recharge Pond 1: 1,240 L
Total Capacity of Recharge Pond 2: 7,400 L
Total Capacity of Trenches (30): 6,600 L
Total WHC of Technologies: 15,240 L
Total Catchment area of Bhind Springshed: ~10 Hectares
Auteur:
Jaclyn Bandy
Date:
25/07/2019
Spécifications techniques (associées au dessin technique):
Bhind Catchment Recharge Technologies: Location Map
Auteur:
Jaclyn Bandy
Date:
25/07/2019
Spécifications techniques (associées au dessin technique):
Nakina Spring Catchments (springsheds) and Technology Locations
Auteur:
Jaclyn Bandy
Date:
25/07/2019
Spécifications techniques (associées au dessin technique):
Vaishnavi Recharge Structures Diagram Map
Auteur:
Jaclyn Bandy
Date:
25/07/2019
Spécifications techniques (associées au dessin technique):
Technologies in Vaishinavi Springshed
Dimensions:
Large Recharge Pond- Length: 10m, Width: 5m, Depth: 0.8 m
Large Pond Volume: 40 cubic meters (m3)
Overflow Canal (narrow pond adjacent to large recharge pond)
Dimensions:
Overflow Canal- Length: 12.9 m, Width: 1.22 m, Depth: 0.7cm
Overflow Canal: 11.017 m3
Small Recharge Pond- Length: 2.34 m, Width: 2 m, Depth: 0.74 m
Small Pond Volume: 3.36 m3
Recharge Trench- Length: 2.5m, Width: 0.25 m, Height: 0.35 m
Trench Volume: 0.22 m3
Total Trench Volume (20): 4.4 m3
Spacing: trenches within 0.5m of each other and <1m spacing between trenches and broadleaf trees and other bushes
Slope: 26%
Water Holding Capacity (L):
Total Capacity of Large Pond: 40,000 L
Total Capacity of Overflow Canal: 11,017 L
Total Capacity of Small Pond: 3,460 L
Total Capacity of Trenches (20): 4,400 L
Total WHC of Technologies: 58,877 L
Total Area of Technologies: 0.5 Hectare
Total Area of Vaishnavi Catchment: ~13 Hectares
Auteur:
Jaclyn Bandy
Date:
25/07/2019
4.2 Informations générales sur le calcul des intrants et des coûts
Spécifiez la manière dont les coûts et les intrants ont été calculés:
- par entité de la Technologie
Précisez l'unité:
2 Ponds, 1 Overflow Canal, 20 Recharge trenches
Précisez les dimensions de l'unité de terrain (le cas échéant):
Total Trenches (20): 4.4 m3, Large Recharge Pond: 40 m3, Overflow Canal: 11.017 m3, Small Recharge Pond: 3.36 m3
autre/ monnaie nationale (précisez):
INR
Indiquez le taux de change des USD en devise locale, le cas échéant (p.ex. 1 USD = 79.9 réal brésilien): 1 USD = :
70,0
Indiquez le coût salarial moyen de la main d'œuvre par jour:
400 INR
4.3 Activités de mise en place/ d'établissement
Activité | Calendrier des activités (saisonnier) | |
---|---|---|
1. | Plan designed by administrative committee of Van Panchayat | Winter 2016 |
2. | For technology construction, groups of men and women (8 total per group) were established with their planned working days | Pre-monsoon 2016 |
3. | Trenches and recharge ponds were dug on a rotation system by the groups on different days | Pre-monsoon 2016 |
4. | Compensation was given to participants upon completion of the project after 20 days work. | Pre-monsoon 2016 |
4.4 Coûts et intrants nécessaires à la mise en place
Spécifiez les intrants | Unité | Quantité | Coûts par unité | Coût total par intrant | % des coût supporté par les exploitants des terres | |
---|---|---|---|---|---|---|
Main d'œuvre | Community manual labor | person-days | 120,0 | 400,0 | 48000,0 | 100,0 |
Equipements | pick | pieces | 5,0 | 300,0 | 1500,0 | 100,0 |
Equipements | shovel | pieces | 5,0 | 500,0 | 2500,0 | 100,0 |
Equipements | pharuwa (hoe) | pieces | 4,0 | 300,0 | 1200,0 | 100,0 |
Equipements | khanti (digging bar) | pieces | 3,0 | 1500,0 | 4500,0 | 100,0 |
Equipements | hammer | pieces | 3,0 | 2000,0 | 6000,0 | 100,0 |
Equipements | small hammer | pieces | 3,0 | 300,0 | 900,0 | 100,0 |
Equipements | chino (chisel) | pieces | 4,0 | 500,0 | 2000,0 | 100,0 |
Matériaux de construction | Rocks excavated on site | |||||
Coût total de mise en place de la Technologie | 66600,0 | |||||
Coût total de mise en place de la Technologie en dollars américains (USD) | 951,43 |
Commentaires:
On average 4 people worked on establishing the technology/day = 400 x 4 = 1600 (labor cost/day)
1600 x 30 days = 48,000 Total Cost
4.5 Activités d'entretien/ récurrentes
Activité | Calendrier/ fréquence | |
---|---|---|
1. | Monitoring of the area for any damages or maintenance required | Weekly |
2. | Clearing of debris or filled sediment in pond/trenches/channel | Pre monsoon |
4.6 Coûts et intrants nécessaires aux activités d'entretien/ récurrentes (par an)
Spécifiez les intrants | Unité | Quantité | Coûts par unité | Coût total par intrant | % des coût supporté par les exploitants des terres | |
---|---|---|---|---|---|---|
Main d'œuvre | Maintenance Labor | person-days | 4,0 | 1600,0 | 6400,0 | 100,0 |
Equipements | Communal equipment (see above for costs) | |||||
Coût total d'entretien de la Technologie | 6400,0 | |||||
Coût total d'entretien de la Technologie en dollars américains (USD) | 91,43 |
4.7 Facteurs les plus importants affectant les coûts
Décrivez les facteurs les plus importants affectant les coûts :
-Amount of siltation accumulated in the recharge structures (more debris/soil accumulation requires more maintenance and labor days)
-Labor availability
5. Environnement naturel et humain
5.1 Climat
Précipitations annuelles
- < 250 mm
- 251-500 mm
- 501-750 mm
- 751-1000 mm
- 1001-1500 mm
- 1501-2000 mm
- 2001-3000 mm
- 3001-4000 mm
- > 4000 mm
Spécifiez la pluviométrie moyenne annuelle (si connue), en mm:
1500,00
Spécifications/ commentaires sur les précipitations:
Monsoon- mid-June to mid-September; July and August are the rainiest months and the temperature is warm and moist; between 70-85% of the annual precipitation occurs in the monsoon season
Seasons
a. Winter or cold weather (mid Dec. - mid March)
b. Summer or hot weather (mid March - mid June)
c. Season of general rains (South - West monsoon season)
d. Season of retreating monsoon (mid September to mid November)
Indiquez le nom de la station météorologique de référence considérée:
India Meteorological Department, Meteorological Centre Dehradun
Zone agro-climatique
- subhumide
The overall climatic condition in the Pithoragarh district is governed by the southwest monsoon. It has a sub-tropical to temperate climate, with three pronounced seasons; summer, winter, and monsoon. The hilly terrain of the Himalayan region has snow cover and is cold during winter with snowfall normally occurring during the months of December to March.
Temperature- The temperature ranges from 0°C to 10°C in winter and from 8°C to 33°C in summer season. However, there is no meteorological observatory in the district. The account of the climate is based mainly on the records of the observations in the neighboring districts where similar meteorological conditions prevail. Variations in temperature are considerable from place to place and depend upon elevation as well as aspect. As the insolation is intense at high altitudes, in summer temperatures are considerably higher in the open than in the shade.
5.2 Topographie
Pentes moyennes:
- plat (0-2 %)
- faible (3-5%)
- modéré (6-10%)
- onduleux (11-15%)
- vallonné (16-30%)
- raide (31-60%)
- très raide (>60%)
Reliefs:
- plateaux/ plaines
- crêtes
- flancs/ pentes de montagne
- flancs/ pentes de colline
- piémonts/ glacis (bas de pente)
- fonds de vallée/bas-fonds
Zones altitudinales:
- 0-100 m
- 101-500 m
- 501-1000 m
- 1001-1500 m
- 1501-2000 m
- 2001-2500 m
- 2501-3000 m
- 3001-4000 m
- > 4000 m
Indiquez si la Technologie est spécifiquement appliquée dans des:
- situations concaves
Commentaires et précisions supplémentaires sur la topographie:
Average Altitude of evaluated sites: 1850m
Average Slope: 25%
5.3 Sols
Profondeur moyenne du sol:
- très superficiel (0-20 cm)
- superficiel (21-50 cm)
- modérément profond (51-80 cm)
- profond (81-120 cm)
- très profond (>120 cm)
Texture du sol (de la couche arable):
- grossier/ léger (sablonneux)
- moyen (limoneux)
Texture du sol (> 20 cm sous la surface):
- moyen (limoneux)
Matière organique de la couche arable:
- moyen (1-3%)
- faible (<1%)
Si disponible, joignez une description complète du sol ou précisez les informations disponibles, par ex., type de sol, pH/ acidité du sol, capacité d'échange cationique, azote, salinité, etc.
Mountain/hill soils are a collective name given to various types of soils found under the following conditions :
-under sub-tropical, temperate and sub-alpine conditions
-under various forest types
Characteristics: very thin, fertile, and may be less than a centimeter deep on steep slopes; they are mixed with pebbles, shingles (a mass of small rounded pebbles), and gravels; they have a low-medium water holding capacity. Angular and subangular fragments of parent rock may be found mixed with the lower layers of the mountain and hill soils.
Texture: varies from loamy to sandy loam.
Soil Reaction: ranges from acidic to neutral (pH 4.6 to 6.5)
Organic Matter content: 1-5%
Ferrugenous red roils are found in this district and are well developed over Himalayan rocks (quartzite, biotite schist, amphibolite schist). They are free of carbonates and deficient in nitrogen, humus and phosphorus, light textured, porous, and friable (brittle/crumbly). The soil depth ranges from about 10cm-75 cm. These soils may be grouped into two on basis of morphology
1. Red earths- loose, friable topsoil rich in secondary concretions (hard, compact mass of matter formed by the precipitation of mineral cement within the spaces between particles, and is found in sedimentary rock or soil)
2. Red loam- argillaceous soils having a blocky structure (argillaceous minerals may appear silvery upon optical reflection and are minerals containing substantial amounts of clay-like components, e.g. argillaceous limestones are limestones consisting predominantly of calcium carbonate, but including 10-40% of clay minerals)
Brown soil: is found particularly under dense broadleaved temperate and sub-alpine forests. There occurs a thick layer of humus on the forest floor (made of decomposed leaves, branches, twigs) and the topsoil is extremely rich in humus
Podsolic Soil: soil that has developed in humid/temperate conditions usually under coniferous forests (e.g. deodar, blue pine, fir, spruce) over quartzite, granites, schists and gneiss.
(Citation: Kumaun: The Land and the People, Sharad Singh Negi (1993)
5.4 Disponibilité et qualité de l'eau
Profondeur estimée de l’eau dans le sol:
5-50 m
Disponibilité de l’eau de surface:
moyenne
Qualité de l’eau (non traitée):
eau potable
La qualité de l'eau fait référence à:
eaux souterraines
La salinité de l'eau est-elle un problème? :
Non
La zone est-elle inondée?
Non
Commentaires et précisions supplémentaires sur la qualité et la quantité d'eau:
Quantity: Water crisis has been a perennial problem in both the rural and urban areas of the Pithoragarh district
There is scarcity of safe drinking water of the villages in the study area. Hand pumps are often not functioning, pipe-water schemes are unreliable and the spring discharges have reduced during the dry season. Hand-pumped water often has a high iron content and bitter taste. Poor quality of groundwater in some of the naulas is mainly due to misuse and/or disuse of the structures.
A block-district groundwater resource estimation could not be carried out as the area is hilly (with slope >20%) and in major part aquifers are small, isolated bodies, and groundwater abstraction is done mainly through hand pumps and springs with small discharges.
However, we collected some physicochemical parameters that indicate the water (sourced from springs) is of good quality:
Water Quality Parameters of Springs:
pH: 6.29-8.18
Temp: 19.0-23.5 ºC
Electrical Conductivity: 109-504 µmsiemens
Total Dissolved Solids: 75-385 ppm
Other Parameters (from springs of nearby district, Champawat)
Electrical Conductivity: 127-222 µmsiemens
pH: 7.69-8.24
Calcium: 16-36 mg/l
Magnesium: 4.9-7.3 mg/l
Bicarbonate: 61-134 mg/l
Chloride: 5.3- 8.9 mg/l
Total Hardness as CaCO3: 70-110 mg/l
Source: Government of India Ministry of Water Resources, Central Ground Water Board, 2009 Groundwater Brochure of Champawat District (2009
5.5 Biodiversité
Diversité des espèces:
- moyenne
Diversité des habitats:
- moyenne
Commentaires et précisions supplémentaires sur la biodiversité:
Uttarakhand has more than 7000 species of medicinal plants and 500 species of fauna. Floral diversity contributes 31% of total floral density of India. Fauna contributes just 1.58% of the total faunal density of the country. There are 119 endemic species of flowering plants in the state that exhibited 2.35% endemism and 35 faunal endemic species. Because it lies at the juncture of India, Nepal and the Tibeten Autononmous region, there often cases of poaching and smuggling of wildlife contrabands, including bear bile, musk pods and leopard skins through the borders. Yarsa Gumba Ophiocordyceps sinensis, commonly known as Caterpillar Fungus, is also illegally traded transboundary in the region, together with various plant species. Due to anthropogenic impacts, changes is soil quality, and climatic elements, the biodiversity of our study site is not as high as in other areas of the Pithoragarh district.
Citation: Sundriyal, M. & Sharma, B. (2016). Status of Biodiversity in Central Himalaya, Applied Ecology and Environmental Sciences, 4( 2), 37-43.
5.6 Caractéristiques des exploitants des terres appliquant la Technologie
Sédentaire ou nomade:
- Sédentaire
Orientation du système de production:
- subsistance (auto-approvisionnement)
- exploitation mixte (de subsistance/ commerciale)
Revenus hors exploitation:
- 10-50% de tous les revenus
Niveau relatif de richesse:
- pauvre
Individus ou groupes:
- groupe/ communauté
Niveau de mécanisation:
- travail manuel
Genre:
- femmes
- hommes
Age des exploitants des terres:
- jeunes
- personnes d'âge moyen
- personnes âgées
5.7 Superficie moyenne des terres utilisées par les exploitants des terres appliquant la Technologie
- < 0,5 ha
- 0,5-1 ha
- 1-2 ha
- 2-5 ha
- 5-15 ha
- 15-50 ha
- 50-100 ha
- 100-500 ha
- 500-1 000 ha
- 1 000-10 000 ha
- > 10 000 ha
Cette superficie est-elle considérée comme de petite, moyenne ou grande dimension (en se référant au contexte local)?
- petite dimension
5.8 Propriété foncière, droits d’utilisation des terres et de l'eau
Propriété foncière:
- communauté/ village
Droits d’utilisation des terres:
- communautaire (organisé)
Droits d’utilisation de l’eau:
- accès libre (non organisé)
- communautaire (organisé)
Est-ce que les droits d'utilisation des terres sont fondés sur un système juridique traditionnel?
Oui
Précisez:
Under the Kumaun Panchayat forest rules of 1931 (amended in 1976): the Van Panchayat (community forest council) is formed out of non-private land within the settlement boundaries of a village. Accordingly, all villagers are members of the VP upon their approval by a Sub-Divisional Magistrate under the state Revenue Department. The members are collectively referred to as the general body, which selects the management committee members through a democratic process.
Commentaires:
5-9 elected members assume control of the forest and the extent of villager use. They additionally raise funds and mobilize the village to protect and support sustainable land use. Presently 12,089 Van Panchayats are entrusted with the management of over 5,449.64 km2 of forests.
5.9 Accès aux services et aux infrastructures
santé:
- pauvre
- modéré
- bonne
éducation:
- pauvre
- modéré
- bonne
assistance technique:
- pauvre
- modéré
- bonne
emploi (par ex. hors exploitation):
- pauvre
- modéré
- bonne
marchés:
- pauvre
- modéré
- bonne
énergie:
- pauvre
- modéré
- bonne
routes et transports:
- pauvre
- modéré
- bonne
eau potable et assainissement:
- pauvre
- modéré
- bonne
services financiers:
- pauvre
- modéré
- bonne
Commentaires:
The situation of infrastructure is difficult and inconsistent in the hill regions because of the terrain. The major infrastructural issues are drinking water and irrigation facilities, electricity, transportation and communication facilities and social infrastructure (housing and education). As for financial services, only the State Bank of India (SBI) is active in the hill regions where it is trying to achieve the objective of 100% financial inclusion. Some villages mentioned buying into into agricultural insurance in the past, however this was a temporary enterprise and they were never compensated after extreme climatic events that occurred and damaged over 70% of their crop.
Though infrastructure and education has generally improved over the years, institutional and marketing networks in the region aimed at supporting hill-farmers are lacking.
6. Impacts et conclusions
6.1 Impacts sur site que la Technologie a montrés
Impacts socio-économiques
Production
production fourragère
qualité des fourrages
qualité des forêts/ bois
gestion des terres
Commentaires/ spécifiez:
Constructing these technologies in the forest and within spring catchment areas has supported the village to work collaboratively and increased overall insightfulness to on-and-offsite effects and potentials of SLM.
Revenus et coûts
dépenses pour les intrants agricoles
Commentaires/ spécifiez:
Decreased the amount of supplementary fodder required for livestock. The amount of grasses, fodder, and fuelwood has increased with the help of strategic placement of recharge ponds and trenches.
charge de travail
Commentaires/ spécifiez:
Less time spent collecting forest resources, as the area where the technology is near the village and supports fodder/fuelwood growth (broadleaf forest/oak nursery area)
Impacts socioculturels
sécurité alimentaire/ autosuffisance
Commentaires/ spécifiez:
Improved self sufficiency of village, as the technology has helped increase their water availability.
situation sanitaire
Commentaires/ spécifiez:
Water condition has improved. Their is less time spent collecting fodder in the forest, as these technologies have supported fodder tree and grass production.
droits d'utilisation des terres/ de l'eau
Commentaires/ spécifiez:
There is less friction between the villages of Bhurimuni and Nakina. Nakina did not have to go ask for permission to access the Bhurimuni Naula for water during the dry season.
opportunités culturelles
Commentaires/ spécifiez:
The improvements of forest resource security and resilience to disasters/climatic extremes have allowed the villagers to spend more of their time building up a communal gathering area for ceremonial events and festivals around the Vaishnavi Temple.
possibilités de loisirs
Commentaires/ spécifiez:
There is more time for the women (1-2 hours saved) as the structural technologies have supported existing vegetation growth. This has reduced the time and distance required for gathering fodder an fuelwood.
institutions communautaires
Commentaires/ spécifiez:
The partnerships formed between land-users, the Nakina Van Panchayat, the Forest Department and external institutions are leading examples of necessary cooperation between all levels of governance for project harmonization.
connaissances sur la GDT/ dégradation des terres
Commentaires/ spécifiez:
People are taking forest management seriously and making innovative plans for further SLM interventions, whether it be community-initiated or with the help of external institutions/agencies.
apaisement des conflits
Commentaires/ spécifiez:
Increased availability of resources has helped the overall morale of the village. This has further enhanced cooperation for interventions that require participation and effort in the community forest.
situation des groupes socialement et économiquement désavantagés
Impacts écologiques
Cycle de l'eau/ ruissellement
quantité d'eau
Commentaires/ spécifiez:
The technologies act as a water reservoir and improve water holding capacity of the soil by decreasing runoff velocity.
récolte/ collecte de l'eau
ruissellement de surface
drainage de l'excès d'eau
nappes phréatiques/ aquifères
évaporation
Sols
humidité du sol
couverture du sol
perte en sol
accumulation de sol
encroûtement/ battance du sol
compaction du sol
matière organique du sol/ au dessous du sol C
Commentaires/ spécifiez:
Micro-catchments accumulate debris/silt washed down from upstream areas. When managed properly, this can function as a beneficial mulch to the soil, improving bioavailabiltiy of nutrients for plants.
Biodiversité: végétale, animale
Couverture végétale
Commentaires/ spécifiez:
Improved water availability and thus potential/support for vegetation growth and cover.
biomasse/ au dessus du sol C
Commentaires/ spécifiez:
Improves grasses and vegetation growth, and collects debris/silt from upstream areas.
diversité végétale
Commentaires/ spécifiez:
Micro-catchments provide water for native grasses, vegetation, and can help with the germination of seeds.
diversité animale
Commentaires/ spécifiez:
Micro-catchments provide water and habitat for small animals/birds.
espèces bénéfiques
Commentaires/ spécifiez:
Micro-catchments provide water, habitat, and protection for microorganisms and insect species. They support native grasses and vegetation.
diversité des habitats
Réduction des risques de catastrophe et des risques climatiques
glissements de terrains/coulées de débris
Commentaires/ spécifiez:
Decreased surface flow velocity
impacts de la sécheresse
Commentaires/ spécifiez:
Improved groundwater availability and enhanced spring recharge
impacts des cyclones, pluies torrentielles
Commentaires/ spécifiez:
Erosion impacts from extreme rain storms is reduced by decreasing flow velocity
risques d'incendies
Commentaires/ spécifiez:
Area is protected and forest is further enhanced by improved groundwater availability
microclimat
Commentaires/ spécifiez:
Decreased surface temperature due to improved vegetation/biomass, soil cover and water availability.
6.2 Impacts hors site que la Technologie a montrés
disponibilité de l'eau
Commentaires/ spécifiez:
Improved spring discharge in the peak dry season
flux des cours d'eau fiables et stables en saison sèche
Commentaires/ spécifiez:
Bhind and Vaishnavi Naulas (springs) have improved discharge in the peak dry season. According to villagers, there was little to no water available in May/June, and since 10 years the flow has returned due to improved forest management in combination with these structural technologies.
inondations en aval
Commentaires/ spécifiez:
impact of flash flood is minimized
envasement en aval
Commentaires/ spécifiez:
Helped slow down sediment and runoff
pollution des rivières/ nappes phréatiques
Commentaires/ spécifiez:
No direct evidence, but statements from the locals indicate that there are less sediments in the spring water ( due to improved soil infiltration and buffering capacity)
capacité tampon/de filtration
dommages sur les champs voisins
Commentaires/ spécifiez:
Less damage from runoff
dommages sur les infrastructures publiques/ privées
Commentaires/ spécifiez:
Decreased intensity of runoff on the roadside and settlement below
6.3 Exposition et sensibilité de la Technologie aux changements progressifs et aux évènements extrêmes/catastrophes liés au climat (telles que perçues par les exploitants des terres)
Changements climatiques progressifs
Changements climatiques progressifs
Saison | Augmentation ou diminution | Comment la Technologie fait-elle face à cela? | |
---|---|---|---|
températures annuelles | augmente | bien | |
précipitations annuelles | décroît | modérément | |
autre changement climatique progressif | Intensity of rainfall in wet season | augmente | bien |
Extrêmes climatiques (catastrophes)
Catastrophes météorologiques
Comment la Technologie fait-elle face à cela? | |
---|---|
pluie torrentielle locale | très bien |
orage local | bien |
averse de grêle locale | bien |
tempête de neige locale | pas connu |
tempête de vent locale | bien |
Catastrophes climatiques
Comment la Technologie fait-elle face à cela? | |
---|---|
canicule | bien |
sécheresse | bien |
feu de forêt | bien |
Catastrophes hydrologiques
Comment la Technologie fait-elle face à cela? | |
---|---|
crue éclair | modérément |
glissement de terrain | modérément |
Commentaires:
The functionality of the technology depends on its maintenance. For example, after an extreme hydrological event such as a rainstorm, the trenches and ponds can fill up with sediment and debris. If the structures are not maintained and reconstructed after such damaging events, they lose their purpose.
Similarly, if there is no rain and extreme drought, the structure may be intact with no maintenance. However with no water to collect, the technology has little use.
6.4 Analyse coûts-bénéfices
Quels sont les bénéfices comparativement aux coûts de mise en place (du point de vue des exploitants des terres)?
Rentabilité à court terme:
neutre / équilibrée
Rentabilité à long terme:
très positive
Quels sont les bénéfices comparativement aux coûts d'entretien récurrents (du point de vue des exploitants des terres)?
Rentabilité à court terme:
neutre / équilibrée
Rentabilité à long terme:
très positive
Commentaires:
Due to these interventions, spring discharge has improved in the dry season. As villagers are highly reliant on these springs, this has had a huge impact on the community. Establishment and maintenance costs are extremely low compared to the benefits.
6.5 Adoption de la Technologie
- 11-50%
Si disponible, quantifiez (nombre de ménages et/ou superficie couverte):
In combination with the efforts of the Uttarakhand Forrest Department, under the Tata Water Mission (an initiative of Tata Trusts) 312 villages (out of 1,724) in Pithoragarh district have successfully implemented springshed management projects. They adopted a catchment area approach by identifying sources of springs, understanding their history and reason for decreased discharge before identifying areas that need to be rejuvenated.
De tous ceux qui ont adopté la Technologie, combien d'entre eux l'ont fait spontanément, à savoir sans recevoir aucune incitation matérielle, ou aucune rémunération? :
- 0-10%
Commentaires:
Land users received an incentive of 5.30 USD (400INR), which is provided by funds that lie in the joint account between the Van Panchayat and the Uttarakhand State Forest Department. The community has limited access to these funds, and consent is needed to withdraw money for community forest related activities. Due to the time and drudgery to establish the technologies in the appropriate zone (usually far from the village, in the upper catchment area), many villagers will not willingly go out digging trenches and recharge ponds in the forest without incentives or exemplary evidence that these structures will give tangible or immediate benefits.
6.6 Adaptation
La Technologie a-t-elle été récemment modifiée pour s'adapter à l'évolution des conditions?
Oui
Si oui, indiquez à quel changement la Technologie s'est adaptée:
- changements/ extrêmes climatiques
Spécifiez l'adaptation de la Technologie (conception, matériaux/ espèces, etc.):
Water channels were made to direct runoff into the large recharge pond.
6.7 Points forts/ avantages/ possibilités de la Technologie
Points forts/ avantages/ possibilités du point de vue de l'exploitant des terres |
---|
Reduces erosion, improves catchment of runoff, increases groundwater availability and aids in spring recharge. |
Supports soil quality and broadleaf forest growth through increased infiltration, improved soil moisture and water availability. |
Reduces impact of landslides and further downstream damage to settlements (water erosion, siltation) |
Points forts/ avantages/ possibilités du point de vue du compilateur ou d'une autre personne ressource clé |
---|
Views aligned with land user |
6.8 Faiblesses/ inconvénients/ risques de la Technologie et moyens de les surmonter
Faiblesses/ inconvénients/ risques du point de vue de l’exploitant des terres | Comment peuvent-ils être surmontés? |
---|---|
Structural damage of technologies due to extreme hydrological events | Maintenance after such events and application of vegetative measures to complement. Combine with conservation practices like mulching to aid infiltration and deceleration of runoff speed. |
Function of technologies are lost when there is no rainfall | In general, biological interventions are necessary to aid groundwater recharge in the area. However, due to increased vegetation cover, soil moisture and available organic matter can be conserved in times of drought. |
Faiblesses/ inconvénients/ risques du point de vue du compilateur ou d'une autre personne ressource clé | Comment peuvent-ils être surmontés? |
---|---|
Function of the technologies can be compromised with inappropriate design, site selection, or quantification of the area necessary for significant groundwater recharge (e.g. amount of recharge pond and trenches). | Training and awareness about the limitations of this technology should be known and made aware by supporting agencies. Selection of catchment areas for springsheds and catchment calculations need to be assessed. Additionally, onsite experts should be provided during implementation. |
7. Références et liens
7.1 Méthodes/ sources d'information
- visites de terrain, enquêtes sur le terrain
Villages: Naikina, Digtoli, Bhurmuni, Talli Seam, Malli Seam
- interviews/entretiens avec les exploitants des terres
1.Gram Panchayat (Head of Forest Council)
2. Former Village Head
3. Community group discussions (FDGs)
- interviews/ entretiens avec les spécialistes/ experts de GDT
1. Uttarakhand Forest Department
2. Local NGO Himalayan Sewa Samiti, CHEA
3. G.B. Pant researchers and project implementers
- compilation à partir de rapports et d'autres documents existants
Quand les données ont-elles été compilées (sur le terrain)?
04/07/2019
Commentaires:
Field data duration: June 2019-July 2019
7.3 Liens vers les informations pertinentes en ligne
Titre/ description:
Dhara Vikas Handbook: A User Manual for Springshed Development to Revive Himalayan Springs
URL:
https://www.indiawaterportal.org/news/dhara-vikas-handbook-user-manual-springshed-development-revive-himalayan-springs
Titre/ description:
Protocol for Reviving Springs in the Hindu Kush Himalaya: A Practitioner’s Manual
URL:
http://lib.icimod.org/record/34040/files/SpringManual04-2018.pdf
Titre/ description:
Reviving Dying Springs: Climate Change Adaptation Experiments From the Sikkim Himalaya
URL:
https://www.researchgate.net/publication/273670290_Reviving_Dying_Springs_Climate_Change_Adaptation_Experiments_From_the_Sikkim_Himalaya
Titre/ description:
Assessing Landscape Restoration Opportunities for Uttarakhand, June 2018
URL:
https://www.iucn.org/sites/dev/files/content/documents/uttarakhand_restoration_opportunities_assessment_report_june_20181.pdf
Titre/ description:
Stories of Success- narratives from a sacred land
URL:
http://lib.icimod.org/record/32844/files/SuccessStory.pdf
Liens et modules
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Community Forest Management in the Nakina Van Panchayat [Inde]
Van Panchayats or village forest councils are a impressive example of grassroots community management of natural resources, where a specific administrative unit is locally elected by community members who are responsible for the management of activities related to the forest.
- Compilateur : Jaclyn Bandy
Naula Management and Conservation [Inde]
Naulas are shallow, four-sided stepped wells designed to collect water from subterranean seepages or springs and are used to meet domestic water needs by the local communities. Naula management and conservation encompasses a range of activities that preserve their structure and function.
- Compilateur : Jaclyn Bandy
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