Brève description de la meilleure pratique

High Vertical Living Sand Barrier is a protective barrier set in the wind and sand stricken areas. The barrier with certain height and penetrability is made up of growing plants suitable for dry and sandy conditions to alleviate the wind and sand drifting speed through the rows of plants, and finally piling up the drifting sand. It is an effective sand fixation approach to protect infrastructure from being ravaged.

Site

Jiuquan City of Gansu Province, China|

Brève description de l’environnement naturel du site

Soil texture is coarse sandy and soil erodibility is very high.
Arid.
Plain/plateaus

Conditions socio-économiques dominantes des personnes vivant sur ou à proximité du site

Railway department (in state owned form), land around collective owned by the farmers|
Local income level is low. Per Capita Annual Net Income is CNY 8158 in Rural areas of Jiuquan City in 2011.
Farming.

Sur la base de quel critère/indicateur(s) (sans relation avec la stratégie) la pratique proposée et technologie correspondante ont-elles été considérées comme « meilleures »?

Annual rainfall is over 150mm, and in the areas of railway and highway line.
It is highly effective, suitable to natural conditions. Annual rainfall is over 150mm.

Principaux problèmes abordés par la meilleure pratique

1. Protect farmland, road and other facilities from harms of sand storms.
2. Guarantee traffic operation, increase income, improve environment condition, raise people’s living standard.
3. Raise community’s capability in ecological protection.
4. Raise community participation.
1. Protect farmland, road and other facilities from harms of sand storms.
2. Guarantee traffic operation, increase income, improve environment condition, raise people’s living standard.
3. Raise community’s capability in ecological protection.
4. Raise community participation.

Décrivez les principaux problèmes liés à la dégradation des terres abordés par la meilleure pratique

The drifting sand burying the railway and wind erosion was addressed.

Précisez les objectifs de la meilleure pratique

1. Control drift sand burying road and facilities.
2. Reduce wind speed and improve production condition.
3. Raise vegetation cover and improve production condition.
1. Control drift sand burying road and facilities.
2. Reduce wind speed and improve production condition.
3. Raise vegetation cover and improve production condition.
1. Control drift sand burying road and facilities.
2. Reduce wind speed and improve production condition.
3. Raise vegetation cover and improve production condition.

Brève description des principales activités, par objectif

1. Select cutting of C. klementzil and one year seedlings of Haloxylon ammodendron for planting, with plant space 10 cm of more.
2. Check the plant survival condition in the spring following the establishment of the plant barrier, conduct replanting to the unplanted of dead. 3. The living sand barrier built should be looked after by specialized people to avoid damages of domestic animals.|
1. 2-4 belts of windbreak are proper for the seriously affected areas and 1-2 belts are suitable for lightly affected places.
2. The first belt of windbreak should be planted perpendicular to the wind direction about 200m to the rail tracks to be protected at the windward side.
3. Further, windbreaks should be planted in 20m intervals to total 2-4 belts in parallel with the first one.
No answer provided.
1. High vertical living sand barrier is built in spring.
2. On drift sand site, draw straight line perpendicular wind direction of afforestation, at the span of about 20m.
3. Afforestation and watering.|

Brève description et caractéristiques techniques de la technologie

Select suitable plant species and determine row spacing and specifications according to drift sand condition, especially drift intensity, and to form a high vertical barrier.
The first belt of windbreak should be planted perpendicular to the wind direction about 200m to the rail tracks to be protected at the windward side. Further, windbreaks should be planted in 20m intervals to total 2-4 belts in parallel with the first one. Calligonum klementzil, Haloxylon ammodendron, Salix psammophila, etc. may be planted. 25cm or longer cuttings, or one year old seedlings in 30cm are proper for the plantation of Calligonum and Salix psammophila; one year old seedlings of 30cm in length suits planting of Haloxylon ammodendron. Initial density should be kept in 10-12 tree/m.

Nom et adresse de l’institution développant la technologie

Gansu Desert Control Research Institute|No answer provided.

La technologie a-t-elle été développée en partenariat ?

Oui

Dressez la liste des partenaires :

Lanzhou Railway Bureau in Gansu Province.

Précisez le cadre de promotion de la technologie

• Initiative locale
• Initiative basée sur un programme/projet
• Initiative locale

La participation des parties prenantes locales, y compris des OSC, a-t-elle été recherchée au cours du développement de la technologie ?

Oui

Dressez la liste des parties prenantes locales:

Rail workers.|Local farmers.

Précisez le rôle des parties prenantes ci-dessus dans la conception, l’introduction, l’utilisation et la maintenance de la technologie, le cas échéant.

Rail workers were responsible for maintenance of technology. Local farmers offered labor in the use of the technology.

La population vivant sur ou à proximité du site a-t-elle été impliquée dans le développement de la technologie?

Non

Décrivez les impacts sur site (les deux principaux impacts par catégorie)

Fix drift sand and reduce ground wind speed.
Add vegetation cover of the sand area, reduce sand striking to crops around the project area.|
Raise farmers’ awareness of sand fixation.
Improve local industrial and agricultural production conditions.
Improvement of local capacity on sand dune fixation.
Encourage local participation of ecological project.
Prevent sand burying road and other facilities.
Improvment of local developemnt base, access to markt by rail way,local imcome increase

Décrivez les deux principaux impacts hors site (dans les environs)

Ensure the normal operation of the entire Lanzhou-Xinjiang Railway line service.
Form a technical extension mechanism by integrating research and extension.

Impact sur la biodiversité et le changement climatique

Décrivez:

Activities and measures taken in the best practices/technology, fixed drift sand and added vegetation cover of the sand areas, so the best practice had a positive impact on biodiversity conservation and climate change. |

Une analyse coût-avantage a-t-elle été réalisée?

Une analyse coût-avantage a-t-elle été réalisée? :

Oui

La technologie a-t-elle été diffusée/introduite sur d’autres sites?

La technologie a-t-elle été diffusée/introduite sur d’autres sites? :

Oui

Où?

The sand areas in the Lanzhou-Xinjiang railway line.

Pouvez-vous identifier les trois principales conditions ayant favorisé la réussite de la meilleure pratique/technologie présentée?

Local farmers participated in the use of the technology.
Choice of the technology adapted to local natural and socio-economic conditions.
Researcher-Enterprise Cooperation mode of technology development and promotion.

Réplication

Selon vous, la meilleure pratique/technologie proposée peut-elle reproduite, y compris avec un certain degré d’adaptation?

Oui

Si oui, à quel niveau?

• Local
• Sous-national

Liées aux ressources humaines

Lack of effective organization of the human resources.|Participating communities and individuals are limited.|The individual capacity of some participants is limited.

Liées aux aspects techniques

Farmers lack the ability of the application and promotion of the technology.