RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2016, Vol. 25 >> Issue (05): 743-750.doi: 10.11870/cjlyzyyhj201605007

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STUDY ON LANDSCAPE PATTERN CHANGES AND DRIVING FORCES OF ECOLOGICAL RISK IN CHAOHU LAKE BASIN

HUANG Mu-yi, HE Xiang   

  1. School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China
  • Received:2015-08-20 Revised:2015-12-31 Online:2016-05-20
  • Supported by:
    The KeyProject of Excellent Researcher Award Program from Anhui Institute of Education. "Study of modeling and coupling mechanism betweenlandscape pattern and water pollution effect based on watershed scale (2013SQRL047ZD)";The Provincial Special Issue on Huizhou ArchitecturalProtection from Anhui Provincial Department of Finance, Department of Housing and Construction."Study on the path and pattern of protectionfor the regional context of Huizhou ancient village during the stage of new urbanization (HPZX2013-01)"

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Abstract: Healthy ecosystem is an important foundation for the sustainable development of regional social economy. Studying the changes of landscape pattern and the driving forces of ecological risk is helpful to diagnose the ecosystem status and reveal the source of ecological risk, which can provide a basis for taking measures to manage and control the changes of ecological risk in Chaohu Lake Basin. In this paper, the changes of landscape pattern and ecological risk of 9 administrative units in Chaohu Lake Basin were analyzed based on spatial information technology, and the driving forces of ecological risk were discussed by using econometric analysis model during the phase of rapid urbanization from 2000 to 2013 in Chaohu Lake Basin. The results showed that:(1) The landscape structure changed obviously from 2000 to 2013 in Chaohu Lake Basin, the farmland, woodland and water landscape decreased gradually, but the construction land increased significantly. On the landscape level, the Shannon's diversity index and Evenness index decreased, but the Dominance index increased, which presented the reduce of regional landscape heterogeneity remarkably. (2) As a whole, the ecological risk of the nine administrative units in Chaohu Lake Basin was on the rise, the overall elevation of ecological risk means that the regional ecosystem experienced strong disturbance from human activities. Therefore, measures should be taken to control the rising of regional ecological risk in Chaohu Lake Basin. (3) The driving force analysis of ecological risk indicated that the changes of ecological risk during the rapid urbanization stage in Chaohu Lake Basin were mainly affected by second industrial value, urbanization rate, population density and fixed asset investment, and the increase of per capita GDP would reduce the level of ecological risk to some extent.

Key words: landscape pattern, ecological risk, driving forces, Chaohu Lake Basin

CLC Number: 

  • Q149
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