| 黄土高原晋陕蒙毗邻地区土地退化遥感分析 |
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| 引用本文： | 郑兴年,王乃斌.黄土高原晋陕蒙毗邻地区土地退化遥感分析[J].地理学报,1993,48(2):161-170. |
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| 作者姓名： | 郑兴年 王乃斌 |
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| 作者单位： | 中国科学院遥感应用研究所 北京100101
(郑兴年，王长耀，林恒章)，中国科学院自然资源综合考察委员会 北京100101
(王乃斌)，中国科学院地理研究所 北京100101(池天河) |
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| 摘 要： | 本文利用遥感技术通过典型区的分析,对黄土高原土地退化现状及其成因过程进行了深入研究。结果表明,黄土高原地区由于特殊的自然条件,加以长期人类活动影响,土地退化十分严重,并处于不断发展之中,主要表现为水土流失和土地沙化等。
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| 关 键 词： | 土地退化 遥感 土壤侵蚀 黄土高原 |
A STUDY ON THE LAND DEGRADATION IN THE NEIGHBO-URING AREAS BETWEEN SHANXI, SHAANXI AND INNER MONGOLIA BY USING REMOTE SENSING METHODS |
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| Zheng,Xingnian Wang Changyao Lin Hengzhang.A STUDY ON THE LAND DEGRADATION IN THE NEIGHBO-URING AREAS BETWEEN SHANXI, SHAANXI AND INNER MONGOLIA BY USING REMOTE SENSING METHODS[J].Acta Geographica Sinica,1993,48(2):161-170. |
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| Authors: | Zheng Xingnian Wang Changyao Lin Hengzhang |
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| Abstract: | Land degradations such as water and soil erosion, desertification, salinization, alkaliza-tion, swamping, loss of the fertility of soil, degradation of soil structure and soil pollution are caused by wind, water and human influence. The Loess Plateau is situated in the central part of China, with the area of 623.7 million ha. and has a arid and semi-arid continental monsoon climate, with strong winds in Spring and torrential rains in autumn. The landfonn gradually becomes higher from southeast to northwest, and the height difference is about 4 500 m. The original parent material is mainly loess. The vegetation coverage is tenuous and the soil is very poor. The results of the study by using remote sensing technology show that, in the Loess Pla-teau, the special natural conditions and the influence of human activity have caused severe land degradation such as water and soil erosion, land desertification. The area of land with water and soil erosion problems makes up more than 30% of the total area. There is 11.8 million ha desertified land, accounting for 18.91% of the total area. The land degradation in-dex(LDI) is more than 5. Thus, in the region, a very fragile environment was formed and land degradation was rapidly increased, which lead to the astonishing loss of soil fertility. |
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| Keywords: | Land Degradation Remote Sensing Soil Erosion Land degradation In-dex(LDI) |
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