Journal of Ecology and Rural Environment ›› 2019, Vol. 35 ›› Issue (7): 867-874.doi: 10.19741/j.issn.1673-4831.2018.0451

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Priority Evaluation of Ecological Reclamation of Industrial and Mining Wasteland Based on Fuzzy Comprehensive Evaluation Method and Landscape Connectivity: A Case Study of Daye City

WEI Xiao-jian1,2, XIAO Zhan-chun3, TAN Yong-bin2, WANG Tian1, CHEN Zhu-an2   

  1. 1. Research Center of Resource and Environment Economics, East China University of Technology, Nanchang 330013, China;
    2. School of Geomatics, East China University of Technology, Nanchang 330013, China;
    3. Editorial Office of Journal of Natural Science of Wuhan University, Wuhan 430072, China
  • Received:2018-08-01 Online:2019-07-25 Published:2019-07-22

Abstract:

The most pervious study about the priority evaluation of the reclamation of industrial and mining wasteland into forest land only considered its suitability for forest land,and took less consideration of its contribution to forest landscape connectivity. Taking Daye City in Hubei Province as a case study,the priority degree of ecological reclamation in industrial and mining wasteland evaluated by fuzzy comprehensive evaluation method,landscape connectivity index and two-dimensional method. The results show that:(1) the areas of the most suitable,more suitable,less suitable and unsuitable patches of the reclamation of industrial and mining wasteland into forest in Daye City were 967.44,343.54, 67.85 and 75.96 hm2. The most suitable patches concentrated in Jinshan Town,and the unsuitable patches mainly distributed in the Huandiqiao Town. (2) The optimal distance threshold of landscape ecological network connection is 1 250 m in Daye. After the reclamation of industrial and mining land,the area of the highest,high,middle and low-grade patches contributing to the ecological network structure of forest land were 234.80,358.24,315.08 and 546.68 hm2,respectively. (3) The area of priority of ecological reclamation of industrial and mining waste land in Daye City were 403.68,408.52,594.65 and 47.90 hm2 for grade Ⅰ,Ⅱ,Ⅲ and Ⅳ,respectively. The results of fuzzy suitability evaluation were different from those of network structure importance evaluation. The results of the study can avoid considering only one-sidedness of the evaluation results and enhance the consideration of ecological effect to make the evaluation results more reasonable.

Key words: industrial and mining waste land, ecological restoration, priority evaluation, landscape connectivity, suitability evaluation, Daye City

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