RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2019, Vol. 28 >> Issue (04): 903-916.doi: 10.11870/cjlyzyyhj201904016

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Evaluating the Impact of Land Use Change on Habitat Quality in Metropolitan Fringe Areas from A Perspective of Ecological Network

HE Jian-hua1,2, WANG Chun-xiao1, LIU Dian-feng1,2, CHENG Hang1, SHI Qing-qing3   

  1. (1. School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, China; 2. Key Laboratory of 
    Geographic Information System, Ministry of Education, Wuhan University, Wuhan 430079, China; 
    3. College of Environment and Planning, Henan University, Kaifeng 475001, China)
  • Online:2019-04-20 Published:2019-05-09

Abstract: Land use change in metropolitan fringe area occurs frequently. It is of great significance to analyze the impact of land use change on the habitat quality from a perspective of ecological network and species. We took Ezhou City, a metropolitan fringe area in central China, as a case study, and selected Alcedo bengalensis, Rufous-Backed Shrike, Chinese Pond Heron as target species, and constructed the ecological networks based on the habitat conditions and migration distance of the target species. Based on the two scales of landscape pattern and the connectivity of ecological network, we evaluated the impact of land use change on habitat quality from 2004 to 2014.The results indicate that, the area of construction land in Ezhou increased, the area of forest land increased significantly during 2004-2009, the water decreased significantly during 2009-2014, and the land use was continuously fragmented. From the perspective of the patch, habitats quality showed a downgrading trend. Forest habitats quality represented first increased and then decreased shape, and water habitat quality downward was more obviously. Habitat quality showed an inverted "U" structure which first increased and then decreased from the perspective of connectivity. Patch plays an important role in maintaining network connectivity and habitat quality. The construction of new urban area and infrastructure result in the segmentation of forest land and water,which is the major reason for the surrounding quality change of the typical patch. Therefore, urban planners should pay more attentions to the protection of large habitat patches, which should be prohibited and restricted as the development zone. Meanwhile, in order to improve the ecological environment quality of metropolitan fringe area, “stepping-stones” patches should be protected to maintain network connectivity.

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