| “三北”防护林甘青宁类型区土地沙漠化遥感调查研究 |
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| 引用本文： | 李振山,姚发芬.“三北”防护林甘青宁类型区土地沙漠化遥感调查研究[J].干旱区资源与环境,1997,11(1):78-83. |
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| 作者姓名： | 李振山 姚发芬 |
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| 作者单位： | 中国科学院兰州沙漠研究所 |
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| 摘 要： | 本文是“七五”期间“三北”防护林甘青宁类型区土地沙漠化遥感调查成果总结。该区沙漠化土地面积为２５８７８．３７ｋｍ２，其中轻度、中度、重度和极度沙漠化土地分别为３０２０．３０ｋｍ２，７２７７．４４ｋｍ２、７０８５．５９ｋｍ２ｔ和８４９５．０４ｋｍ２．文中对沙漠化土地的分布及影响因素进行了分析，最后筛出合理的农林牧用地结构。
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| 关 键 词： | 沙漠化 遥感调查 土地 |
A SURVEY OF DESERTIFICATION IN NORTHWEST CHINA |
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| Li Zhenshan,Yao Fafeng \ Wang Yimou.A SURVEY OF DESERTIFICATION IN NORTHWEST CHINA[J].Journal of Arid Land Resources and Environment,1997,11(1):78-83. |
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| Authors: | Li Zhenshan Yao Fafeng \ Wang Yimou |
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| Abstract: | Desertificaton is a serious environmental problem in northwest China.the total area of desertified land was up to 25,878.37km 2 in the late 1980 s.In detail,light desertified land,medium desertified land,severe desertified land and very severe desertified land accounted for 3,020.30km 2,7,277.44km 2,71,085.59km 2 and 84.950.04km 2,respectively.The factors inducing desertification include ①natural aspecs such as the rise of frequent of drought and guest wind, rich sand material;②human aspects such as bad management of natural resources,the misuse of land, and consquently ③ unreasonable structure of land use for agricuture, forestry and animal husbandry. Thus, the attention of combatting desertification should be directed to reasonable structure of landuse. |
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| Keywords: | Desertification remote sensing survey land |
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