Journal of Ecology and Rural Environment ›› 2019, Vol. 35 ›› Issue (1): 55-62.doi: 10.19741/j.issn.1673-4831.2018.0119

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Construction of Landscape Ecological Security Pattern of Shengli Coalfield in Inner Mongolia Based on the Minimum Cumulative Resistance Model

HUANG Xin1,2, CAO Xue-zhang2, ZHANG Ming2, ZOU Xian3   

  1. 1. College of Geographical Sciences, Nanjing University of Information Science & Technology, Nanjing 210044, China;
    2. Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China;
    3. College of Remote Sensing & Geomatics Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China
  • Received:2018-03-16 Online:2019-01-25 Published:2019-01-22
  • Contact: 35 E-mail:caoxuezhang@126.com

Abstract:

Shengli Coalfield is an important coal base in China. However, it had undergone serious degradation of the ecological environment in this region due to the large-scale exploitation of coal resources. The GF1 images in 2016 were manually interpreted to generate a landscape type map on the basis of the landscape classification in Shengli Coalfield. The landscape ecological security pattern in Shengli Coalfield was constructed by using the minimum cumulative resistance model, which including the identification of ecological sources, ecological corridors and ecological nodes. Source identification was carried out by selecting the highest quality patches as ecological sources based on the evaluation of landscape quality. The resistance surface was generated with the landscape self-factors and adjacent landscape disturbance factors. The ecological corridors were extracted by using the minimum cumulative resistance model. Ecological nodes were identified by combining the maximum cumulative resistance "ridge line", which was extracted on the minimum cumulative cost distance surface under hydrological analysis model, with ecological corridors. Landscape ecological security pattern in Shengli Coalfield is composed of 10 ecological sources, 24 ecological corridors and 29 ecological nodes. Ecological protection and restoration of ecological sources, ecological corridors and ecological nodes should be strengthened so as to improve regional ecological stability.

Key words: Shengli Coalfield, minimum cumulative resistance model, landscape ecological security pattern

CLC Number: