[1]DING Hui,ZHAO Xiaomin,GUO Xi,et al.Evaluation of Ecological Sensitivity in Poyang Lake Area of Jiangxi Province[J].Research of Soil and Water Conservation,2020,27(01):257-264.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 01
Page number:
257-264
Column:
Public date:
2020-02-20
- Title:
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Evaluation of Ecological Sensitivity in Poyang Lake Area of Jiangxi Province
- Author(s):
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DING Hui, ZHAO Xiaomin, GUO Xi, ZHANG Han, YI Dan, JIANG Yefeng, HAN Yi, HUANG Xinyi
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(Key Laboratory of Poyang Lake Basin Agricultural Resources and Ecology of Jiangxi Province, College of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, China)
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- Keywords:
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Poyang Lake region; ecological sensitivity; evaluation; analytical hierarchy process
- CLC:
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X37
- DOI:
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- Abstract:
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The flood and drought disasters in the Poyang Lake area of Jiangxi Province are frequent and the ecological sensitivity is high, which seriously restricts the regional social and economic development. In this context, ecological sensitivity assessment can provide the scientific basis for regional sustainable development. In order to analyze the distribution characteristics of regional ecological sensitivity and scientifically identify the ecological sensitivity factors of restricted area development, we selected evaluation factors from four aspects: erosion risk, geological disaster, water environment and ecological service, and constructed the ecological sensitivity evaluation system of Poyang Lake area. The evaluation system is based on ArcGIS software, and combines with AHP and expert method to achieve multi-factor comprehensive evaluation. Finally, the evaluation results are divided into five sensitive levels by natural breakpoint method. The results show that rainfall erosion, slope gradient and land disaster susceptibility are the main sensitive factors in the region. The generally sensitive, slightly sensitive and insensitive areas in Poyang Lake account for 73.5%, and the overall sensitivity is low. Duchang County, Yongxiu County and Xinjian County have the overall best performance. The average comprehensive sensitivity indices of the jurisdictions are 2.42, 2.66 and 2.7, respectively. Jinxian County, Yugan County, Jiujiang City, and Lushan City have relatively sensitive characteristics. The percentages of the areas with severe sensitivity and extreme sensitivity in these four counties are 51.72%, 49.79%, 48.2%, and 42.32%, respectively. On the whole, the region shows a trend of increasing sensitivity from the northwest to the southeast. The evaluation results can provide reference for the policy making of ecological protection and land space planning in Poyang Lake region of Jiangxi Province.