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在科尔沁沙地的天然植被中 ,疏林草地是最稳定 ,也是分布面积比较大的植被类型。因此 ,流动沙丘恢复为疏林草地植被 ,是适应自然规律 ,投入少见效快的治理方式。试验表明 ,在 350mm左右降水量地区 ,对沙丘首先进行围封 ,促进自然植被恢复 ,借助风力 ,削平沙丘顶部 ,降低沙丘高度。同时 ,进行人工喷播灌木和人工栽植乔灌木树种。经过 4～ 5年 ,人工栽植的乔木树种覆盖度达到 1 0 % ,天然更新的小叶杨、家榆等的覆盖率也达 1 0 % ,人工喷播的灌木达到 2 0 % ,天然草本植物的覆盖度由 1 5% ,增加到 60 %。流动沙丘基本稳定 ,并且恢复为疏林草地植被类型
Among the natural vegetation in Horqin sandy land, the sparse grassland is the most stable and the type of vegetation with relatively large distribution area. Therefore, the flow of dunes restored to sparse grassland vegetation, is to adapt to the laws of nature, invest less effective governance. Experiments show that in the area of about 350mm precipitation, the sand dunes are first enclosed to promote the restoration of natural vegetation. With the aid of the wind power, the top of the sand dunes is reduced and the dune height is lowered. At the same time, artificially sow shrubs and artificial shrubs and shrubs. After 4 to 5 years, the coverage of artificially planted tree species has reached 10%. The coverage of naturally-regenerated Populus simonii, Elm and other species has also reached 10% and that of artificial seeding shrubs reached 20%. The natural herbaceous plants Coverage increased from 15% to 60%. Mobile sand dunes basically stable, and restored to sparse grassland vegetation types