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THE ANALYSIS OF LAND USE CHANGES ABOUT LANDSCAPE PATTERN IN WUXI CITY DURING 2001-2008 |
CHAI Hong-bo, YANG Shan |
School of Geographical Sciences, Nanjing Normal University, Nanjing 210046, China |
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Abstract From the point of view of landscape ecology, this article researches the landscape changes during 2001-2008 in Wuxi. We found that the change rate of land use varies faster in Wuxi compared with other region, and the fastest decline is cultivated land while the fastest increasing land is used as construction and garden land. In Wuxi City, the various types of land use landscape move in or out is frequently. Arable land is the major type transferred out while construction land, orchard and woodland landscape are types mainly transferred to. This shows that the problems of non-cultivated land and non-arable land of agricultural land in Wuxi City are prominent. The landscape pattern affected larger by human activities, which makes the original plaque broken. So that the numbers of different landscape types are increasing and the degree of landscape fragmentation raises, especially arable land. But at the same time, driven by urbanization and industrialization of intensive management, patches of the construction land, orchard and woodland landscape aggregate and expand. The dominance gradually increases and the growth of the fragmentation's degree has been alleviated to some extent. Whenever from the view of several landscape type or the overall level of landscape, the fragmentation of landscape in Wuxi has a great growth. The sustained growth of patch number and density show that the degree of human interference is increasing. With the rapid economic growth, population growth, climate and other natural environment changes, the extent of human interference on the plaque is greater than before, which resulted in dysfunction of landscape ecology. Another issue requiring attention is the sharp drop of agricultural land. The over-exploitation of agricultural land use will inevitably lead to the lack of reserve land resources. Simultaneously, the rapidly expanding of the construction land and the slow development of management efforts will also bring a series of ecological and environmental problems.
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Received: 28 March 2012
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