| 浑善达克沙地地区土地沙漠化初步研究 |
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| 引用本文： | 刘树林,王涛.浑善达克沙地地区土地沙漠化初步研究[J].水土保持学报,2004,18(5):99-103. |
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| 作者姓名： | 刘树林 王涛 |
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| 作者单位： | 中国科学院,寒区旱区环境与工程研究所,沙漠与沙漠化重点实验室,甘肃,兰州,730000 |
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| 基金项目： | 国家重点基础研究发展规划“中国北方沙漠化过程及其防治研究”(G2000048705) |
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| 摘 要： | 通过野外调查和对2000年TM影像的解译，分析了研究区土地沙漠化的分布格局与发展态势，以及土地沙漠化造成的负面影响。从气候因子的时空分布与变化和人地关系两大方面，探讨了研究区土地沙漠化发生、发展的原因。结果表明，沙漠化土地在空间分布上，与春季风蚀气候因子分布范围不一致；沙漠化在发展的速率上，与三大气候因子的动态变化不一致。结论指出：近50年来，气候因子的时空变化不是研究区土地沙漠化的主要原因；人畜压力与环境容量严重失衡，研究区人地关系的管理上屡有失误，落后的生产、生活方式转变缓慢，是造成研究区土地沙漠化的本质原因。
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| 关 键 词： | 浑善达克沙地 土地沙漠化 春季 风蚀 气候因子指数 |
| 文章编号： | 1009-2242(2004)05-0099-05 |
Primary Study on Sandy Desertification in Otindag Sandy Land and Its Surrounding Regions |
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| LIU Shu-lin,WANG Tao Key Laboratory of Desert and Desertification,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou.Primary Study on Sandy Desertification in Otindag Sandy Land and Its Surrounding Regions[J].Journal of Soil and Water Conservation,2004,18(5):99-103. |
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| Authors: | LIU Shu-lin WANG Tao Key Laboratory of Desert and Desertification Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou |
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| Institution: | LIU Shu-lin,WANG Tao Key Laboratory of Desert and Desertification,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000 |
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| Abstract: | Through making field investigation and using the results of 2000 TM images classified, the distribution
patterns and development trend of land sandy desertification as well as its causing negative affection were analyzed
in this paper. In the view of the spatial distribution and temporal variation of climatic factors and the relation be-
tween mankind and earth, the driven factors of occurrence and development of land sandy desertification was ex-
plored. The results showed that the spatial distribution of land desertification was different with the scope of the
wind erosion climatic factor in spring; that the development rate of land sandy desertification disagreed with the
variation of three main climatie factors. The final conclusion drew is that the main reason of land sandy desertifica-
tion in study area in the last 50 years isn't the temporal and spatial variation of climatic factors. The real reasons
are the serious unbalance between the pressure coming from man and livestock and the environmental capacity;
the worse management on the relation between human and land; the unenlightened and extensive produetion and
living styles. |
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| Keywords: | Otindag sandy land land sandy desertification the wind erosion climatic factor index in spring |
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