Eco-environmental Vulnerability Assessment Based on Fuzzy Analytic Hierarchy Process - A Case Study in the Ecological Shelter Zone of Three Gorges Reservoir Area in Hubei Province
FAN Yuxin1, SHI Zhihua2. Eco-environmental Vulnerability Assessment Based on Fuzzy Analytic Hierarchy Process - A Case Study in the Ecological Shelter Zone of Three Gorges Reservoir Area in Hubei Province[J]. 2018, 32(1): 91-96.
FAN Yuxin1, SHI Zhihua2. Eco-environmental Vulnerability Assessment Based on Fuzzy Analytic Hierarchy Process - A Case Study in the Ecological Shelter Zone of Three Gorges Reservoir Area in Hubei Province[J]. 2018, 32(1): 91-96. DOI: 10.13870/j.cnki.stbcxb.2018.01.015.
Eco-environmental vulnerability assessment for the ecological shelter zone was pivotal for protecting the water quality and maintaining the ecosystem of shelter zone in Three Gorges reservoir. By the aid of the fuzzy analytic hierarchy process and GIS & RS
this study performed an eco-environmental vulnerability assessment for the ecological shelter zone in Hubei province
and the main influencing factors were also analyzed. The main results were listed as follows: (1) The vulnerability of the ecological environment was mainly mild
moderate and potential vulnerability
accounting for 74.9% of the shelter zone area
which mainly located the middle part of Zigui and north part of Badong
and the 21.7% of the shelter zone was covered by the heavy vulnerability area which distributed in the southern part of Zigui and Yiling
middle and southern parts of Badong; (2) The heavy and very heavy ecological vulnerability areas mainly located in the area with the elevation lower than 800 m and the slope less than 25。
where the land was not well covered by vegetation but concentrated residence
and the anthropogenic activities was the main influencing factor on eco-environmental vulnerability; (3) Increasing the vegetation cover by constructing the agroforestry system
adopting afforestation and ecological restoration would be the effective treatments to decrease the eco-environmental vulnerability in this shelter zone.