【摘 要】
：
The preset situation of desertification and trend of its future development are dealt with here.Human impact on the fragile ecosystem in arid and semi-arid zones is quite obvious.The way to improve th
【出 处】
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The Journal of Chinese Geography
论文部分内容阅读
The preset situation of desertification and trend of its future development are dealt with here.Human impact on the fragile ecosystem in arid and semi-arid zones is quite obvious.The way to improve the situation lies in proper utilization of land and o
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