PLA sand barrier for stabilizing mobile sand dunes
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表 Give a few answers, and choose up to five
√ Improve vegetation biomass √ Reduce, prevent, and restore degraded land Improve or protect the soil Protect or restore ecosystems √ To maintain / enhance biodiversity √ Reduce the risk of disasters (e. g. drought, droughts, floods, sandstorms, etc.) Adaptation to climate change and its effects (e. g., enhanced resilience to drought and warming) Mitigating climate change and its impacts (e. g. increased carbon sink capacity) Generating economic benefits (e. g. increased income) Generating social benefits (e. g. reducing the consumption of natural resources and reducing poverty) Other uses (detailed description): ………………………………………………………………… 
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Main type of degradation Sub type of degradation √ [W] Soil erosion by water [Wt] Loss of topsoil/surface erosion
[Wg] Gully erosion/gullying
[Wr] Riverbank erosion√ [E] Soil erosion by wind [Et] Loss of topsoil [C] Chemical soil deterioration [P] Physical soil deterioration √ [B] Biological degradation [Bc] Reduction of vegetation cover
[Bq] Quantity/biomass decline
[Bs] Quality and species composition/diversity decline
[Bl] Loss of soil life [H] Water degradation Else
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Climatic province Temperate semi-arid region climate Specific annual precipitation /mm 250-400 Average annual precipitation /mm Average air temperature /℃ < 50 < -20 √ 50- 200 √ -20- 5 √ 200- 400 √ 5- 15 400- 800 √ 15- 25 800- 1,500 √ 25- 35 > 1,500 35- 45 > 45
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表 Country, county/flag, township, and give the longitude and latitude of the application location of the project
Country County/flag Township Longitude° Latitude° Elevation / m China Duolun County Naole Town 116.483333 42.133333 1066.0
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表 Terrain and landform conditions
Elevation Landform Mean inclination Aspect Slope < 100 m Flatland √ Flat slope (0-5%) Sunny slope Upper slope 100-500 m Slope √ Gentle slope (6-15%) Shady slope Mid slope √ 500-1,000 m Hilly slope Moderate slope (16-25%) Semi-sunny slope Lower slope √ 1,000-1,500 m Sloping ground Steep slope (26-35%) Semi-shady slope √ 1,500-2,000 m Valley floor 2,000-2,500 m √ Sand dune 2500-3,000 m √ Sandy flat > 3000 m Gentle cultivated land
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表 Edaphic condition
Soil type Soil texture Effective soil depth Topsoil organic matter content Soil hardness Stone content √ Aeolian soil √ Sandy 0-20 cm High (> 3%) High √ Low gravel content soil (1-5%) Chestnut Calcic soil Loamy sand √ 20-50 cm Medium (1-3%) Medium Moderate gravel content soil (5-10%) Brown Calcic soil Loam 50-100 cm √ Low (< 1%) √ Low High gravel content soil (10-30%) Luvisol Clay 100-200 cm Light gravel soil (30-50%) Saline-alkali soil > 200 cm Moderate gravel soil (50-70%) Else: Heavy gravel soil (> 70%)
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表 Vegetation condition
Vegetation type Community cover Degradation status Artificial forest: () √ < 5% Slight degradation √ Sand vegetation: (Agriophyllum squarrosum, Corispermum hyssopifolium) √ 5-15% Moderate degradation Shrub land: () 15-25% √ Severe degradation Grassland: () 25-40% Dry shoots phenomenon in artificial forest Meadow: () > 40% Mortality phenomenon in artificial forest Others: (cultivated land)
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表 Please select and fill in the relevant technical information according to the following technical classifications for specific technologies.
Technical link Key technical points Implementation
season / month1. Specific technical measures: Engineering sand fixation, artificial seedling planting, sowing for afforestation. Engineering sand fixation: Material PLA.
Afforestation by planting seedlings: Chinese red pine, Chinese desert willow, elm, etc.
Sowing for afforestation: Sea wormwood, poplar, sand rice.Spring, rainy season 2. Land preparation methods: Pitted land preparation. Dig pits and afforest immediately. Rainy season 3. Density, configuration, and planting pit specifications: Afforestation density: Arbor 2m × 4m, shrub 1m × 4m.
Afforestation configuration: Belt type, belt width 6-10m. Planting pit specifications: Arbor container seedlings, 30cm × 30cm × 40cm; Bare-root seedlings, 50cm × 60cm × 60cm.Artificial afforestation and vegetation restoration under sand barriers.
Specifications for sand barriers: Band-type sand barrier with a width of 2-4m, grid-type sand barrier with a size of 2m × 2m.
Sowing for afforestation: The ratio for sea wormwood, poplar, and sand rice is 4:2:4, with 0.5kg of seeds per acre.Spring, rainy season 4. Seedling requirements: Container seedlings of Chinese red pine 30-50cm, bare-root seedlings of arbor with a ground diameter of 2-3cm. Seedlings of grade two or above, free from diseases and pests, with full apical buds for coniferous trees.
Seedlings are treated with full moisture preservation throughout the process.Pits for planting the seedlings are dug 5. Planting: Dig pits and afforest immediately. For container seedlings in afforestation, remove the plastic containers and compact the soil. Spring, rainy season 6. Maintenance: Prohibit grazing, replant. Set up fences in the project area. Grazing prohibition for 3 years Schedule or attachment (with relevant technical parameters, add schedule or attachment information here)
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Labour cost 450-670 USD / ha Cost of material 1100-2000 USD / ha Water cost (if irrigation is required) Rain-fed Total cost 1550-2670 USD / ha
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