1.2 Coordonnées des personnes-ressources et des institutions impliquées dans l'évaluation et la documentation de la Technologie

Nom du ou des institutions qui ont facilité la documentation/ l'évaluation de la Technologie (si pertinent)

NCCR North-South (NCCR North-South) - Kirghizistan

Nom du ou des institutions qui ont facilité la documentation/ l'évaluation de la Technologie (si pertinent)

Tajik Soil Insitute (Tajik Soil Institute) - Tadjikistan

Nom du ou des institutions qui ont facilité la documentation/ l'évaluation de la Technologie (si pertinent)

CDE Centre for Development and Environment (CDE Centre for Development and Environment) - Suisse

1.3 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

2.1 Courte description de la Technologie

Définition de la Technologie:

Vegetative and structural technology for the rehabilitation of an expanded gully

2.2 Description détaillée de la Technologie

Description:

The extension of a deep incised gully, which borders a fertile orchard, is stopped and sediments are trapped by the help of vegetative and structural measures. The gully floor is vegetated with different trees inter alia willow, poplar, cherry, blackberry and walnut which are arranged in random groups. At the bottom of the gully where it intersects the road there is a stonewall, which collects the sediments that are washed down during heavy rainfalls mostly in spring. A dense bush line with Russian olives, apricots, cherries, walnuts, plums and buxus has been planted on the top of the side slopes of the gully, and roots of those bushes keep the soil stable and at the same time they prevent landslides and expansion of the gully. These tree lines are cut from time to time, otherwise they grow and become heavy and due to their weight the trees would possibly fall into the gully.

Purpose of the Technology: (1) The deep roots of willow trees on the bottom of the gully protect the soil and prevent it from being eroded during the heavy spring floods. Trees also help to collect sediment and to accumulate it in the gully. (2) The dense bush lines with its deep roots, on the top of the gully slope, stop the horizontal erosion, which endangers the fertile orchard close to the gully. (3) A stonewall at the lower end of the gully collects sediments which have been washed down. Once in a while a heightening of the stonewall has to be done. The technology with its three measures prevents from further gully expansion and supports its rehabilitation.

Establishment / maintenance activities and inputs: These three measures, the tree line, the bottom vegetation and the stonewall were developed and implemented by the farmer's own initiative. The farmer implemented the technology on his own and expands it every year. The entire technology doesn’t have to be established at once, which allows investing money and time whenever it is available. For maintenance new trees are planted both in the gully and in the tree line, which has to be cut and pruned from time to time. The technology is relatively affordable and facile to implement. At the beginning the farmer bought some seedlings. Meanwhile, the plants reproduce themselves and the farmer doesn't have to buy seedlings for further maintenance. The stones can be collected for free in the nearby riverbed. The work is done manually; no special tools are needed for the technology.

Natural / human environment: The farmer is proud of the outcome of his initiative. However he wishes that his neighbours would follow his lead, as for them it would be beneficial to implement the technology as well. He stated that usually people do not listen to a common farmer, but if the technology would be introduced by an official person it would spread out quickly.

2.3 Photos de la Technologie

2.5 Pays/ région/ lieux où la Technologie a été appliquée et qui sont couverts par cette évaluation

2.6 Date de mise en œuvre de la Technologie

Si l'année précise est inconnue, indiquez la date approximative: :

• il y a entre 10-50 ans

2.7 Introduction de la Technologie

Spécifiez comment la Technologie a été introduite: :

• grâce à l'innovation d'exploitants des terres

Commentaires (type de projet, etc.) :

The farmer implemented the technology during the civil war and teached other farmers to do it. But it is not so easy for the farmer to convince other people to follow his example.

3.1 Principal(aux) objectif(s) de la Technologie

• réduire, prévenir, restaurer les terres dégradées
• protéger un bassin versant/ des zones situées en aval - en combinaison avec d'autres technologies

3.2 Type(s) actuel(s) d'utilisation des terres, là où la Technologie est appliquée

Commentaires:

Major land use problems (compiler’s opinion): Highly erodible loess soil, and heavy rainfalls which causes a lot of surface runoff and erosion.

Major land use problems (land users’ perception): Lack of water for irrigation, too few rain, steep slopes, infertile soils which make the use of fertilizers essential.

Constraints of wastelands / deserts / glaciers / swamps

Number of growing seasons per year:

1

Specify:

Longest growing period in days: 210Longest growing period from month to month: March to August

3.5 Groupe de GDT auquel appartient la Technologie

• mesures en travers de la pente
• gestion des eaux de surface (sources, rivières, lacs, mers)

3.6 Mesures de GDT constituant la Technologie

Commentaires:

Main measures: vegetative measures

Secondary measures: structural measures

Type of vegetative measures: aligned: -along boundary, scattered / dispersed

3.7 Principaux types de dégradation des terres traités par la Technologie

Commentaires:

Main type of degradation addressed: Wg: gully erosion / gullying

Secondary types of degradation addressed: Wm: mass movements / landslides, Wr: riverbank erosion

Main causes of degradation: soil management (lack of knowledge for soil treatement, e.g. people dig hollows which support gully formation, agronoms from soviet times are missing), over-exploitation of vegetation for domestic use (Trees were cut for domestic use), overgrazing, disturbance of water cycle (infiltration / runoff), Heavy / extreme rainfall (intensity/amounts), land tenure (land is not private property), poverty / wealth (no money for tractors, fertilizers, education, etc.,), education, access to knowledge and support services, war and conflicts (during the civil war the land was not cultivated sustainably), governance / institutional (land use rights)

Secondary causes of degradation: deforestation / removal of natural vegetation (incl. forest fires), change in temperature (too hot and too cold temperatures dry out the soil, plants cannot survive), change of seasonal rainfall, population pressure, inputs and infrastructure: (roads, markets, distribution of water points, other, …) (lack of machinery to treat the field properly)

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:

• prévenir la dégradation des terres
• restaurer/ réhabiliter des terres sévèrement dégradées

Commentaires:

Main goals: prevention of land degradation, rehabilitation / reclamation of denuded land

4.1 Dessin technique de la Technologie

4.2 Informations générales sur le calcul des intrants et des coûts

autre/ monnaie nationale (précisez):

Tajik Somoni

Indiquez le taux de change des USD en devise locale, le cas échéant (p.ex. 1 USD = 79.9 réal brésilien): 1 USD = :

4,7

4.3 Activités de mise en place/ d'établissement

	Activité	Calendrier des activités (saisonnier)
1.	plant trees in the gully	whole year
2.	plant tree line	whole year
3.	build wall

4.4 Coûts et intrants nécessaires à la mise en place

	Spécifiez les intrants	Unité	Quantité	Coûts par unité	Coût total par intrant	% du coût supporté par les exploitants des terres
Main d'œuvre	Build wall	wall	1,0	125,0	125,0	100,0
Main d'œuvre	Planting trees	Persons/day	3,0	12,0	36,0	100,0
Matériel végétal	Tree seedlings		1,0	166,0	166,0
Coût total de mise en place de la Technologie					327,0
Coût total de mise en place de la Technologie en dollars américains (USD)					69,57

4.5 Activités d'entretien/ récurrentes

	Activité	Calendrier/ fréquence
1.	add trees in the gully	spring
2.	add trees in the tree line	spring
3.	increase the height of the stonewall	once a while

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	% du coût supporté par les exploitants des terres
Main d'œuvre	Add trees	Persons/day	1,0	12,0	12,0	100,0
Main d'œuvre	Increase the hight of the wall	-
Coût total d'entretien de la Technologie					12,0
Coût total d'entretien de la Technologie en dollars américains (USD)					2,55

Commentaires:

The fact that the inputs for the technology are not evenly distributed throughout the area, the costs were calculated for the whole technology area.

4.7 Facteurs les plus importants affectant les coûts

Décrivez les facteurs les plus importants affectant les coûts :

The material is relatively affordable. Money intensive factor are the seedlings during establishment phase. Following years the trees reproduce themselves. The establishment of the technology, the planting of the trees and the building of the stonewall require a lot of labour input in the initial phase. As the whole technology does not have to be implemented at once, the work can be split-up over years.

5.1 Climat

5.2 Topographie

5.3 Sols

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: No soil in the gully

Soil fertility is medium for the treeline on top of the slopes of the gully (close to the orchard). but in the gully its very low because the soil was washed away.

Topsoil organic matter is medium at the treeline on top of the gully slope.

Soil drainage / infiltration is medium and in the orchard, gully works as drainage

Soil water storage capacity is very low

5.4 Disponibilité et qualité de l'eau

5.5 Biodiversité

5.6 Caractéristiques des exploitants des terres appliquant la Technologie

Indiquez toute autre caractéristique pertinente des exploitants des terres:

Land users applying the Technology are mainly common / average land users

Difference in the involvement of women and men: The technology was directed by the farmer and implemented by the farmer's son. Only men were involved in the technology. In Tajikistan usually work for men and women is strictly divided. Women work in the household, take care for children and work on the field. The gully rehabilitation project was men's work.

Population density: 100-200 persons/km2

Annual population growth: 2% - 3%

10% of the land users are rich (trader which buy and sell products from the farmers).
60% of the land users are average wealthy and own 80% of the land.
30% of the land users are poor and own 20% of the land.

Off-farm income specification: beneath the technology the farmer has an orchard with intercropping, a flax and a wheat plot.

5.7 Superficie moyenne des terres utilisées par les exploitants des terres appliquant la Technologie

5.8 Propriété foncière, droits d’utilisation des terres et de l'eau

Propriété foncière:

• état

Droits d’utilisation des terres:

• accès libre (non organisé)

Droits d’utilisation de l’eau:

• communautaire (organisé)

5.9 Accès aux services et aux infrastructures

6.1 Impacts sur site que la Technologie a montrés

Impacts socio-économiques

Production

Revenus et coûts

Impacts socioculturels

Impacts écologiques

Cycle de l'eau/ ruissellement

Sols

Biodiversité: végétale, animale

Réduction des risques de catastrophe et des risques climatiques

6.2 Impacts hors site que la Technologie a montrés

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	pas connu

Extrêmes climatiques (catastrophes)

Catastrophes météorologiques

	Comment la Technologie fait-elle face à cela?
pluie torrentielle locale	pas bien
tempête de vent locale	bien

Catastrophes climatiques

	Comment la Technologie fait-elle face à cela?
sécheresse	pas bien

Autres conséquences liées au climat

Autres conséquences liées au climat

	Comment la Technologie fait-elle face à cela?
réduction de la période de croissance	pas bien

Commentaires:

On the bottom of the gully willow trees should be planted which have strong roots to resist floods, especially if the gully is already deep. At the slopes Russian olives and wild cherries can be planted. The higher amount of trees makes gully even more stable.

6.4 Analyse coûts-bénéfices

Quels sont les bénéfices comparativement aux coûts de mise en place (du point de vue des exploitants des terres)?

Quels sont les bénéfices comparativement aux coûts d'entretien récurrents (du point de vue des exploitants des terres)?

Commentaires:

Much more extra work comes up for the establishment, but for the farmer work is not a disadvantage.

6.5 Adoption de la Technologie

Commentaires:

There is a little trend towards spontaneous adoption of the Technology

6.7 Points forts/ avantages/ possibilités de la Technologie

Points forts/ avantages/ possibilités du point de vue de l'exploitant des terres
Stopping the expansion (prevention) of the gully and filling up the gully (rehabilitation). How can they be sustained / enhanced? Maintain the vegetative measures, plant more seedlings and let them reproduce themselves.
Firewood and construction material production. How can they be sustained / enhanced? Increase the vegetation with wood of good quality and use it in a sustainable manner (cut only as much as will be reproduced).

Points forts/ avantages/ possibilités du point de vue du compilateur ou d'une autre personne ressource clé
Extensive use of the area and a relatively rich diversity of local vegetation. The maintained gully provides new habitat for natural flora and fauna. How can they be sustained / enhanced? Keep and promote the diversity of plants in the gully.
Cheap and relatively less labor intensive work. Relatively little knowledge and no special tools are required. How can they be sustained / enhanced? Make the technology public.
The entire technology doesn’t have to be established at once, which allows investing money and time whenever it is available.

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?
The trees stop the water, sediments, branches etc. too effectively and this creates problems with too much water in the gully, which is washing out the sides of the gully.

Faiblesses/ inconvénients/ risques du point de vue du compilateur ou d'une autre personne ressource clé	Comment peuvent-ils être surmontés?
A disadvantage is the extra work the farmer have to spend on a little productive area.	In the land users view work is not a disadvantage, it is his job. Considering the fact that it is not that much extra work, it is not a big disadvantage.
For the establishment a first investment for the seedlings is required.	An establishment of the technology during a longer period allows to grow own seedlings from the plants which do not cost anything.

7.1 Méthodes/ sources d'information

7.2 Références des publications disponibles

Titre, auteur, année, ISBN:

Integrated spatial assessment for Sustainable Land Management „SLM-planning“ in the loess hill of central Tajikistan using WOCAT mapping tools (working title), Selina Studer, 2013, Master Thesis, University of Bern, Bern.

Disponible à partir d'où? Coût?

University of Bern

7.3 Liens vers les informations pertinentes en ligne

Titre/ description:

WOCAT technology movie: Orchard-Based Agroforestry

URL:

wocat@cde.ch