| Land use and land cover change along the topographic gradients and stream corridors in the LRGR |
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| 作者姓名： | LI Zhenghai SONG Guobao GAO Jixi BAO Yajing PENG Hua WANG Haimei JIANG Yun LUe Haiyan |
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| 作者单位： | [1]College of Life Science, Dalian Nationalities University, Dalian 116600, China [2]College of Life Science, Inner Mongolia University, Hohhot 010021, China [3]Innovation Base of Regional Ecology, Chinese Research Academy of Environmental Science, Beijing 100012, China [4]Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China [5]Inner Mongolia Meteorological Observatory, Hohhot 010051, China [6]Agricultural Department, Shenyang Agricultural University, Shenyang 110161, China |
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| 基金项目： | This work was supported by the State＇s Key Project of the Basic Research Development Programming （Grant No. 2003CB415102）. |
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| 摘 要： | With the Longitudinal Range-Gorge Region （LRGR） in the southwestern China as the object, this research studied how land use pattern varies with the complex topographic features. Based on the 1：50000 digital elevation model （DEM） data and the remote sensing images in 1980, 2001, and by using GIS map algebra method, we investigated the relationship between landform （e.g. elevation and stream networks） and land use, especially the correlation of human activities with the spatial arrangement of the stream networks. This paper reveals that land use and land cover changes in valleys with rich water source at lower elevations are characterized by distinct successional gradients from the river to the upland, which was possibly due to the distance and the availability of water resource. And by dividing the region into four vertical zones according to their elevations, we found that the land use and human activities in each zone were significantly different. Finally, it is indicated that the jamming effects of human activities in the LRGR were spatially heterogeneous and thus led to the barrier effect of stream corridors.
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| 关 键 词： | 土地利用 屏障效应 LRGR 地质学 |
| 收稿时间： | 2005-12-16 |
| 修稿时间： | 2005-12-162006-04-30 |
Land use and land cover change along the topographic gradients and stream corridors in the LRGR |
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| LI Zhenghai SONG Guobao GAO Jixi BAO Yajing PENG Hua WANG Haimei JIANG Yun LUe Haiyan.Land use and land cover change along the topographic gradients and stream corridors in the LRGR[J].Chinese Science Bulletin,2006,51(B11):108-118. |
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| Abstract: | |
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| Keywords: | land use barrier effect elevation river system the LRGR |
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