| 长江源区沙化现象初步探讨 |
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| 引用本文： | 阎水玉,赵秀峰.长江源区沙化现象初步探讨[J].长江流域资源与环境,1996,5(4):362-366. |
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| 作者姓名： | 阎水玉 赵秀峰 |
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| 作者单位： | [1]兰州大学环境质量评价研究中心 [2]中国科学院兰州冰川冻土研究所 |
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| 摘 要： | 长江源区存在不同程度的沙化现象，沙地种类多样，分布广泛。沙化过程在高寒干旱的气候条件，丰富的物源条件，独特的冻土条件和为因素等综合影响下，从晚更新世末期开始，经过几次旋回一直持续到现在，对该区冻土环境、人类活动存在明显影响。
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| 关 键 词： | 长江源区 沙化 冻土环境 类型 特征 分布 演变 |
A PRELIMINARY STUDY ON DESERTIFICATION IN SOURCE REGION OF YANGTZE RIVER |
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| Yan Shuiyu.A PRELIMINARY STUDY ON DESERTIFICATION IN SOURCE REGION OF YANGTZE RIVER[J].Resources and Environment in the Yangtza Basin,1996,5(4):362-366. |
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| Authors: | Yan Shuiyu |
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| Abstract: | Desertification of various degrees have been happening in the source region of Yangtze River. There are many kinds of sandy land spreading over the region. Affected by the comprehensive actions of arid and cold climate, rich material source, special permafrost and human's activities, the process of desertification began at the end of the Late Pleistocene and has kept going on ever since through several cycles. It has marked effects on permafrost, vegetation and human's activities. |
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| Keywords: | source region of Yangtze River desertification environment |
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