| 宁夏中部地区土地沙化问题研究 |
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| 引用本文： | 钟茵,武吉华.宁夏中部地区土地沙化问题研究[J].干旱区资源与环境,1989(3). |
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| 作者姓名： | 钟茵 武吉华 |
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| 作者单位： | 国家土地管理局
(钟茵)，北京师范大学地理系(武吉华) |
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| 摘 要： | 本文遵循系统生态学原则,引用图论、马尔柯夫分析等方法,分析评价了研究区域土地沙化过程影响因素;揭示了沙化过程发生机制;指出了该区域土地沙化过程是人为导致的,并不是所谓气候变干趋势的决定性影响,提出“土地沙化”不同于“沙漠化”,概念上不应混淆。
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RESEARCH ON THE LAND SANDIFICATION IN THE CENTRE OF NINGXIA |
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| Abstract: | In this paper, the influence factors of the process of the land sandifica-
tion in the given area are discussed with Markov Analysis and Graph Theo-
ry, in accordance with the principles of Systems Ecology. A mechanism of
self-protection from wind erosion is revealed about the natrual soil. A gra-
ph theory model is proposed to analyse the cause of sandification. It is pr-
oved that the sandification in the studied area is a process caused by human
being, but not by the so called drying tendency of climate. |
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