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草地不仅是草原畜牧业的生产基地,而且是重要的生态屏障。由于人类对自然资源的过度利用,造成了生态环境的破坏,土地荒漠化日趋严重。据１９９０年遥感普查结果,我国风力侵蚀面积１８８万ｋｍ２,目前全国荒漠化面积已经达到２６２．２万ｋｍ２,占国土面积２７．３%,是全国耕地
Grassland is not only a production base for grassland husbandry, but also an important ecological barrier. Due to human over-utilization of natural resources, resulting in the destruction of the ecological environment, land desertification is worsening. According to the results of the 1990 Census, the area of wind erosion in China is 1.88 million km2. At present, the desertification area in the country has reached 2.622 million km2, accounting for 27.3% of the total land area,