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对流动沙丘采取埋设机械沙障与栽培固沙植物相结合的方法进行治沙;平缓固定沙地营造防护林带,然后进行农业开发。经过5 a的围封治理,防护林带与固沙植物发挥了显著的防护作用。防护林带可降低风速10~23%,提高气温0.1~1.0℃,增加地温1.5~3.1℃。流动沙丘植物覆盖率由15%增加到45%~85%,风速降低3.9%~31.7%,地温增加0.1~1.2℃。固沙植物起到了防止土壤风蚀的作用,防护林带5~10倍树高范围内无风蚀发生,而防护林带作用以外地区,风蚀面积达10%,侵蚀深度为0.6~3.6 cm。流动沙丘经过治理以后转化为半流动沙丘,移动速度仅为0.3~0.5 m/a,而附近没有治理的流动沙丘的流动速度达20~30 m/a。
The sand dunes should be sandblasted by combining mechanical sand barriers with cultivated sand-fixing plants. The sand belts should be gently fixed to create shelterbelts and agricultural development should then be carried out. After 5 years of enclosure management, shelter belt and sand-fixing plants have played a significant protective effect. The shelterbelts can reduce the wind speed by 10-23%, increase the air temperature by 0.1-1.0 ° C and increase the ground temperature by 1.5-3.1 ° C. The coverage of mobile dune plants increased from 15% to 45% to 85%, the wind speed decreased from 3.9% to 31.7%, and the ground temperature increased from 0.1 to 1.2 ℃. Sand-fixing plants play a role in preventing wind erosion. In the shelter belt, no wind erosion occurs within 5 to 10 times the height of the tree. In areas outside the shelter belt, the wind erosion area reaches 10% and the erosion depth is 0.6-3.6 cm. The mobile sand dunes are converted into semi-mobile sand dunes after being treated, and the moving speed is only 0.3-0.5 m / a, while the flowing sand dunes nearby have a flow rate of 20-30 m / a.