Construction of Ecological Corridors in Karst Areas Based on Ecological Sensitivity and Ecological Service Value

Yi-Xuan Liang, Da-Fang Wu (), Zhao-Jun Wu, Yue Xu, Zi-Wen Zhu, Yu-Cheng Zhang and Hong Zhu
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Yi-Xuan Liang: School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China
Da-Fang Wu: School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China
Zhao-Jun Wu: School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China
Yue Xu: School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China
Zi-Wen Zhu: School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China
Yu-Cheng Zhang: School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China
Hong Zhu: School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China

Land, 2023, vol. 12, issue 6, 1-16

Abstract: Ecological corridors play a key role in promoting the flow of ecological processes, guaranteeing ecological function services and maintaining biodiversity. Based on ecological sensitivity and ecological service values, ecological corridors in typical karst areas of Ningyuan County were constructed to lay the foundation for ecological environmental protection and land development and utilization in the county. Based on the current land use situation in 2020, the ecological source sites were identified by the combined results of ecological sensitivity evaluation and ecosystem service value analysis, and then potential corridors were generated based on the minimum cumulative resistance model (MCR) and the minimum cost path method, and key corridors were identified by the gravity model. The results show that (1) the areas exhibiting strong sensitivity are concentrated within regions characterized by better ecological environment quality; the ecosystem service value and ecological sensitivity have a similar distribution pattern, and those with high ecological value are mainly distributed in areas with better habitat quality such as woodlands and along water systems. (2) The total area of ecological source land in Ningyuan County is 879.14 km², accounting for 35.15% of the county area, mainly distributed in the south and north of the county. (3) There are nine ecological corridors in Ningyuan County, which are radially distributed in a spider-web manner, five important ecological corridors and four general ecological corridors, with total lengths of 96 km and 120.87 km, respectively.

Keywords: ecological corridors; ecological sensitivity; ecological service value; minimal cumulative resistance model; karst region (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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