Forest catchment treatment [Inde]
- Création :
- Mise à jour :
- Compilateur : Chetan Kumar
- Rédacteur : –
- Examinateurs : Fabian Ottiger, Alexandra Gavilano
technologies_1476 - 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
Spécialiste GDT:
Vashisth US
Inde
Nom du projet qui a facilité la documentation/ l'évaluation de la Technologie (si pertinent)
Book project: where the land is greener - Case Studies and Analysis of Soil and Water Conservation Initiatives Worldwide (where the land is greener)Nom du ou des institutions qui ont facilité la documentation/ l'évaluation de la Technologie (si pertinent)
Center for International Forestry Research (CIFOR) (Center for International Forestry Research (CIFOR)) - 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
1.5 Référence au(x) Questionnaires sur les Approches de GDT (documentées au moyen de WOCAT)
Joint forest management [Inde]
Government and NGO supported community protection of forested catchments, through village-based Hill Resource Management Societies.
- Compilateur : Sumana Datta
Joint forest management [Inde]
Joint forest management is a community based program developed in collaboration with the forest department for the protection and management of local forests while providing incentives to the local communities with political and institutional support from the state.
- Compilateur : Sumana Datta
2. Description de la Technologie de GDT
2.1 Courte description de la Technologie
Définition de la Technologie:
Catchment treatment of degraded forest land including social fencing, infiltration trenches and enrichment planting with trees and grasses for production and dam protection.
2.2 Description détaillée de la Technologie
Description:
Forest catchment treatment aims to achieve production and environmental benefits through a combination of structural, vegetative and management measures in badly degraded catchments above villages. These efforts are concentrated in the highly erodible Shiwalik Hills at the foot of the Himalayan range where soil erosion has ravaged the landscape, and the original forest has almost disappeared.
The purpose of forest catchment treatment is first to rehabilitate the forest through protection of the area by ‘social fencing’ (villagers agreeing amongst themselves to exclude livestock without using physical barriers), then construction of soil conservation measures (staggered contour trenches, check dams, graded stabilisation channels etc; see establishment activities), and ‘enrichment planting’ of trees and grasses within the existing forest stand to improve composition and cover. These species usually include trees such as Acacia catechu and Dalbergia sissoo, and fodder grasses - as well as bhabbar grass (Eulaliopsis binata), which is used for rope making. The combined measures are aimed at reestablishing the forest canopy, understorey and floor, thereby restoring the forest ecosystem together with its functions and services. Biodiversity is simultaneously enhanced.
The second main objective is to provide supplementary irrigation water to the village below through construction of one, or more, earth dams. The village community - organised into a Hill Resource Management Society - is the source of highly subsidised labour for forest catchment treatment. After catchment protection around the proposed dam site(s), the dam(s) and pipeline(s) are constructed. The dams are generally between 20,000 and 200,000 m3 in capacity, and the pipelines usually one kilometre or less in length.
Apart from irrigation, the villagers benefit from communal use of non-timber forest resources. Forest catchment treatment (associated with the approach termed ‘joint forest management’ - JFM) has been developed from a pilot initiative in Sukhomajri village in 1976, and has spread very widely throughout India. This description focuses on Ambala and Yamunanagar Districts in Haryana State.
The Shiwalik hills where the SWC technology was applied is one of the eight most degraded, rainfed agro-ecosystems of India. It is highly erodible, with presence of low water retentive soils and severe soil erosion, haing water scarcity despite average 1000 mm annual rainfall.
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:
Haryana
Autres spécifications du lieu:
Ambala and Yamunanagar
Commentaires:
Total area covered by the SLM Technology is 198 km2.
Map
×3. Classification de la Technologie de GDT
3.1 Principal(aux) objectif(s) de la Technologie
- améliorer la production
- réduire, prévenir, restaurer les terres dégradées
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
Précisez l'utilisation mixte des terres (cultures/ pâturages/ arbres):
- Sylvo-pastoralisme
Pâturages
Forêts/ bois
- Rehabilitated natural forest
Type d’arbres:
- Espèces d’Acacia
- Dalbergia sissoo (Sesham)
Commentaires:
Major land use problems (compiler’s opinion): The Shiwalik Hills are extremely prone to both surface erosion and landslides, and general degradation of vegetation due to over-exploitation. Some areas have become completely denuded because of overgrazing and woodcutting. Furthermore there is no, or inadequate, water for irrigation of crops.
Grazingland comments: Due to free grazing, much of the forest land was becoming barren and fodder yield declined over a period of time. The average fodder yield was about two quintals/ha of forest land and fodder consumption was 26.69kg/animal/day.
Problems / comments regarding forest use: Tree species like Khaci (Acacia catechu), Dalbergio sissoo in pits and slips of bhabbar grass (Eulaliopsis binata) on mounds of trenches and hill slopes were planted. Bhabbar grass was sold out by forest department to contractors.
Type of grazing system comments: Due to free grazing, much of the forest land was becoming barren and fodder yield declined over a period of time. The average fodder yield was about two quintals/ha of forest land and fodder consumption was 26.69kg/animal/day.
Longest growing period in days: 120 Longest growing period from month to month: Jul - Oct
3.5 Groupe de GDT auquel appartient la Technologie
- fermeture de zones (arrêt de tout usage, appui à la réhabilitation)
- Amélioration de la couverture végétale/ du sol
- mesures en travers de la pente
3.6 Mesures de GDT constituant la Technologie
structures physiques
Commentaires:
Main measures: structural measures
Secondary measures: vegetative measures, management measures
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
dégradation hydrique
- Ha: aridification
Commentaires:
Main type of degradation addressed: Wt: loss of topsoil / surface erosion
Secondary types of degradation addressed: Wg: gully erosion / gullying, Wm: mass movements / landslides, Ha: aridification
Main causes of degradation: deforestation / removal of natural vegetation (incl. forest fires), education, access to knowledge and support services (Absence of institutional arrangements to disseminate the knowledge from lab to land and involve the users in implementation)
Secondary causes of degradation: overgrazing (Subsistence economy, dependance on forests for fuelwood and fodder, livestock were low quality, free grazing type. And these were no regulatory mechanisms to share usufruct from forests with people.), poverty / wealth (Lack of capital at the grassroot to take the initiative by the farmers themselves)
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
4. Spécifications techniques, activités, intrants et coûts de mise en œuvre
4.1 Dessin technique de la Technologie
Spécifications techniques (associées au dessin technique):
Forest catchment treatment: an overview showing protected forest, dam and irrigated cropland below.
Technical knowledge required for field staff / advisors: moderate
Technical knowledge required for land users: moderate
Main technical functions: increase of infiltration, water harvesting / increase water supply
Secondary technical functions: control of dispersed runoff: retain / trap, improvement of ground cover, control of concentrated runoff
Vegetative measure: enrichment planting with
Vegetative material: T : trees / shrubs, G : grass
Vegetative measure: Vegetative material: T : trees / shrubs, G : grass
Vegetative measure: Vegetative material: T : trees / shrubs, G : grass
Vegetative measure: Vegetative material: T : trees / shrubs, G : grass
Trees/ shrubs species: Acacia catechu, Dalbergia sissoo etc
Grass species: bhabbar grass: Eulaliopsis binata
Structural measure: dam
Structural measure: trenches
Structural measure: ditches
Structural measure: check dams
Other type of management: social fencing
Auteur:
Mats Gurtner
4.3 Activités de mise en place/ d'établissement
Activité | Calendrier des activités (saisonnier) | |
---|---|---|
1. | Enrichment planting of tree seedlings (Acacia catechu, Dalbergiasissoo etc), grasses (bhabbar grass: Eulaliopsis binata) on bundsof earth and hill slopes, and Ipomea cornea in channels. | beginning of the monsoon rains. |
2. | Construction of a series of staggered contour trenches on slopes. | pre-monsoon |
3. | Construction of stone/earth/wood check dams in gullies. | pre-monsoon |
4. | Construction of graded stabilisation channels which capture runoffand discharge it safely. | pre-monsoon |
5. | Construction of earth dam wall for water harvesting and concretepipelines for irrigation. | pre-monsoon |
6. | Introduction of social fencing system through Hill ResourceManagement Societies. | pre-monsoon |
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 | Labour | ha | 1,0 | 250,0 | 250,0 | 5,0 |
Equipements | Machine use | ha | 1,0 | 75,0 | 75,0 | |
Matériel végétal | Seedlings | ha | 1,0 | 50,0 | 50,0 | |
Matériaux de construction | Construction material for dam wall | ha | 1,0 | 25,0 | 25,0 | |
Coût total de mise en place de la Technologie | 400,0 | |||||
Coût total de mise en place de la Technologie en dollars américains (USD) | 400,0 |
Commentaires:
Duration of establishment phase: 36 month(s)
4.5 Activités d'entretien/ récurrentes
Activité | Calendrier/ fréquence | |
---|---|---|
1. | watch and ward | /on-going |
2. | Desilting of water harvesting structures. | pre-monsoon,/once every year |
3. | Repair of channels. | pre-monsoon,/once every year |
4. | Maintenance of structures. | pre-monsoon,/ |
5. | regular meetings/facilitations | |
6. | control grazing fines, peer-group pressure |
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 | Labour | ha | 1,0 | 50,0 | 50,0 | 95,0 |
Coût total d'entretien de la Technologie | 50,0 | |||||
Coût total d'entretien de la Technologie en dollars américains (USD) | 50,0 |
Commentaires:
This information is indicative and is based on calculations derived from Thaska village (Yamunanagar District)
where there are 3 dams - collecting the runoff from the total forest catchment of 75 ha. The cost range of treatments per
hectare of rehabilitated forest is generally US$ 200–700 (where the main cost is that of the dam construction) and typically the area of supplementary irrigation (command area) is twice as large as the forest catchment treated (in this case the irrigated area is 150 ha).
Cost per unit: the treatment of a 25 ha unit of catchment including construction of a dam costs around US$ 10,000.
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
Zone agro-climatique
- subhumide
- semi-aride
Semi arid: Shiwalik region falls under semi-arid agro-climatic zone.
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
Commentaires et précisions supplémentaires sur la topographie:
Landforms: Hill slopes (ranked 1, Higher hills are located in the northern and eastern part of the tract, while low hills in the southern and western parts of the tract. These hills are characterized by relatively high intensity of er), ridges (ranked 2) and footslopes (ranked 3)
Slopes on average: Moderate (ranked 1, the slopes vary considerably from moderate to precipitous), hilly (ranked 2) and steep (ranked 3)
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)
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.
Soil depth on average: Also shallow (ranked 2) and deep (ranked 3)
Soil texture: Coarse (ranked 1, in most of the areas soils are sandy. However sandy loam, loamy sand and sill loam soils are also met with), medium (ranked 2) and fine/heavy (ranked 3)
Soil fertility: Medium (soils are deficient in humus contents. However soils are fairly fertile and suitable for raising forest crops in the entire area)
Soil drainage/infiltration: Poor (water holding capacity of soils is good)
5.6 Caractéristiques des exploitants des terres appliquant la Technologie
Orientation du système de production:
- subsistance (auto-approvisionnement)
- exploitation mixte (de subsistance/ commerciale)
Revenus hors exploitation:
- 10-50% de tous les revenus
Indiquez toute autre caractéristique pertinente des exploitants des terres:
Off-farm income specification: significant off-farm activity/income includes rope making from bhabbar grass. Sale of fodder grass from the forest provides
additional income.
Market orientation forest land: Mixed (forest dept. used to give annual contracts for bhabbar grasses)
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
Commentaires:
2-5 ha: Grazing land mainly comprises of forest area where villagers have rights, private as well as community lands.
5.8 Propriété foncière, droits d’utilisation des terres et de l'eau
Propriété foncière:
- état
Droits d’utilisation des terres:
- communautaire (organisé)
6. Impacts et conclusions
6.1 Impacts sur site que la Technologie a montrés
Impacts socio-économiques
Production
production fourragère
qualité des fourrages
production de bois
diversité des produits
Commentaires/ spécifiez:
Increased non-timber forest products
Revenus et coûts
revenus agricoles
disparités économiques
Commentaires/ spécifiez:
Those with irrigation vs those without
Impacts socioculturels
institutions communautaires
connaissances sur la GDT/ dégradation des terres
apaisement des conflits
Commentaires/ spécifiez:
Those with irrigation vs those without
Impacts écologiques
Sols
humidité du sol
couverture du sol
perte en sol
Biodiversité: végétale, animale
Couverture végétale
Commentaires/ spécifiez:
Trees and grass
diversité végétale
diversité animale
diversité des habitats
6.2 Impacts hors site que la Technologie a montrés
flux des cours d'eau fiables et stables en saison sèche
inondations en aval
envasement en aval
Crop yield
Commentaires/ spécifiez:
From new irrigation water
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:
très positive
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:
très positive
Rentabilité à long terme:
très positive
6.5 Adoption de la Technologie
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? :
- 51-90%
Commentaires:
40% of land user families have adopted the Technology with external material support
Comments on acceptance with external material support: estimates
60% of land user families have adopted the Technology without any external material support
There is a strong trend towards spontaneous adoption of the Technology
Comments on adoption trend: The spread of such forest treatment within Haryana (and outside) is happening steadily.
Farmers have levelled theor fields to await water for irrigation from dams. The villagers have also contributed by money/labour in lying pipelines for water distribution.
6.7 Points forts/ avantages/ possibilités de la Technologie
Points forts/ avantages/ possibilités du point de vue de l'exploitant des terres |
---|
Increased availabilzy of fodder and fuel. How can they be sustained / enhanced? Improvement in livestock mix and breed owned by villlagers. |
Increased crop yields, milk production and horticultural products How can they be sustained / enhanced? Suitable crop mix to derive maximum benefits from water from dams |
Points forts/ avantages/ possibilités du point de vue du compilateur ou d'une autre personne ressource clé |
---|
Increased surface and groundwater help to fill the dam rather than running off and causing flooding and erosion lower down (but not always: see first off-site disadvantage) How can they be sustained / enhanced? Ensure continuous protection/ regular maintenance. |
Increased fodder and fuel from the renewed forest resources How can they be sustained / enhanced? Ditto. |
Reduction of runoff and erosion in the previously degraded catchment How can they be sustained / enhanced? Ditto. |
Improved forest conditions – both canopy and understorey delivering general ecosystem benefits How can they be sustained / enhanced? Ditto. |
Increased crop yield from irrigation made possible through irrigation from the dam Increased household income Increased community institution strength How can they be sustained / enhanced? Ditto. |
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? |
---|---|
Initial investment to change the cattle mix. | Arrangement of credit facility. |
Faiblesses/ inconvénients/ risques du point de vue du compilateur ou d'une autre personne ressource clé | Comment peuvent-ils être surmontés? |
---|---|
In some cases reduction in runoff (because of increased vegetation) causes less water for irrigation | Manipulate vegetative cover as required (selective cutting). |
Conflicts in water distribution | Conflict resolution may need to be carried out through Hill Resource Management Societies. |
High labour input. | |
Regular maintenance and desilting of earthen dams. |
7. Références et liens
7.1 Méthodes/ sources d'information
7.2 Références des publications disponibles
Titre, auteur, année, ISBN:
Singh TP and Varalakshmi V: The Decade and Beyond: Evolving community-state partnership. TERI, New Delhi. 1998.
Titre, auteur, année, ISBN:
Poffenberger M and McGean B (eds): Village Voices, Forest Choices. Joint Forest Management in India. Oxford University Press, Delhi. 1996.
Liens et modules
Développer tout Réduire toutLiens
Joint forest management [Inde]
Government and NGO supported community protection of forested catchments, through village-based Hill Resource Management Societies.
- Compilateur : Sumana Datta
Joint forest management [Inde]
Joint forest management is a community based program developed in collaboration with the forest department for the protection and management of local forests while providing incentives to the local communities with political and institutional support from the state.
- Compilateur : Sumana Datta
Modules
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