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Study on the ecological vulnerability of the Fugong Country, Yunnan Province based on land-use pattern |
ZHU Xue Wuxi |
Wuxi Institution of Technology, Wuxi 214000, China |
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Abstract Fugong County is located in the northern section of Hengduan Mountains, northwest Yunnan, between the northern section of the Biluo Snow Mountain and Gaoligong, and its ecological environment is very vulnerable. We analyzed the regional ecological vulnerability from the perspective of land-use pattern, using factors of splitting index, fractal dimension index, fragmentation index, soil erosion sensitivity index, and habitat pattern sensitivity index, and then explored the zoning law of ecological vulnerability. The results showed that vulnerability of eco-index of all land-use from maximum to minimum was in the order of beach land, town, farmland, grassland, bush land, forest land, and water. The law of region ecological vulnerability was the more peripheral to the Fugong County center, the lower vulnerability. In the 7 classes of region ecological vulnerability, the higher degree ecological vulnerability was, the more increasing the value of fragmentation index and separation index; meanwhile, land-use pattern tended to be fragmentation.
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Received: 25 December 2012
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[1] 王介勇,赵庚星,杜春先. 基于景观空间结构信息的区域生态脆弱性分析——以黄河三角洲垦利县为例[J]. 干旱区研究,2005,22(3): 317-321.
[2] 葛全胜,郑景云. 中国环境脆弱带特征研究[J]. 地理新论,1990,5(2): 17-27.
[3] 邱彭华,徐颂军,谢跟踪,唐本安,毕华,余龙师. 基于景观格局和生态敏感性的海南西部地区生态脆弱性分析[J]. 生态学报,2007,27(4): 1257-1264.
[4] 卢远,苏文静,华璀. 基于景观格局和生态敏感性的左江流域生态脆弱性分析[J]. 水土保持研究,2011,153(3): 78-82. |
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