防止土壤水蚀应以生物措施为主，增加植被覆盖度是最有效的措施。
Priority should be given to biological measures in preventing soil water erosion, and the most effective measure is to increase vegetation coverage.
植被是陆地生态系统中不可缺少的一部分，植被覆盖度的增加能够有效减缓土壤侵蚀的发生。
Vegetation is an indispensable part of terrestrial ecosystem, and the increase of vegetation coverage could effectively slow down the occurrence of soil erosion.
植被覆盖可有效地减少泥沙流失，当植被盖度从5 0 %上升到90 %时，泥沙流失浓度可减少80 % 。
Vegetation cover is effective on the reduction of soil erosion and sediment loss. About 80% SS could be cut down when the coverage changed from 50% to 90%.
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