| 生物土壤与生态 |
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| Land Use/Cover Change and Their Driving Forces in Hotian River Basin of Xinjiang |
| CHEN Zhong-sheng1,2,3, CHEN Ya-ning1,2, LI Wei-hong1,2 |
| 1.Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; 2.Key Laboratory for Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; 3.Graduated School of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract Analysis of driving forces on land use/cover change (LUCC) is one of the hot issues of LUCC study. In this paper, the land-use amount, annual change rate, information entropy, equilibrium degree and dominance degree in Hotan River Basin of Xinjiang were quantificationally analyzed using the data from 1990 to 2005 which was supplied by "Western China Enviromrntal Science and Ecology Center". At the same time, the driving forces of the land use/cover change were explored by making use of the correlation analysis and principal component. The main conclusions are as follows: (1) The overall trend of land use/cover change in Hotan River Basin was in an enlargement of the areas of cultivated land, woodland, building land and waters, but a reduction of meadow land and unused land at the 15-year scale. (2) The information entropy had been showing a growth trend with a very small increase over the whole period, which indicated the degree of disorder of the land use system did not substantially change, and the change of equilibrium degree was basically the same as one of information entropy. (3) At the 15-year scale, the rate of land-use degree change in Hotan River Basin was 0.56% which showed land use was in development, and moreover, the dominance degree change was not obvious with that of unused land being the highest at all times. (4) It was considered that some socio-economic and natural factors are the main driving forces inducing land use/cover change in Hotan River Basin of Xinjiang, such as population, economic, regional socio-economic development degree, government policy, science and technology, weather and hydrology and so on. More importantly, the principal component analysis showed that the impacts of human activity combining with some other conditions were the leading factors that induced dynamic change of the 1and use/cover.
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Received: 07 September 2008
Published: 20 March 2010
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2010, Vol. 30 
