Journal of Ecology and Rural Environment ›› 2022, Vol. 38 ›› Issue (12): 1593-1603.doi: 10.19741/j.issn.1673-4831.2021.0786

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Spatial and Temporal Differentiation and Simulation of Habitat Quality in Typical Karst Areas

CHEN Yan1, WU Rui1, MA Yue-wei1, FENG Xiao-he2, PAN Jian-feng1, CHEN Yu-mei1   

  1. 1. School of Geography and Ecotourism, Southwest Forestry University, Kunming 650224, China;
    2. Faculty of Geography, Yunnan Normal University, Kunming 650500, China
  • Received:2021-12-15 Online:2022-12-25 Published:2023-01-10

Abstract: Habitat quality assessment in typical karst areas is an important means to understand the status of regional resource utilization and implement territorial ecological restoration. Taking Shilin County, an ecologically fragile area, as an example, based on the land cover data from 2000 to 2020, with the help of Land Use Simulation (PLUS) model and InVEST habitat quality model, the landscape distribution pattern of Shilin County, Yunnan Province from 2000 to 2030 and its impact on changes were revealed. Assessing the quality of the ecological environment in the study area in 2030 under multiple scenarios, the results show that: (1) From 2000 to 2020, the land use types in Shilin County were mainly cultivated land, forest land and grassland, among which the artificial surface continued to expand and the cultivated land area continued to decline; (2) In 2000, 2010 and 2020, the average habitat quality in Shilin County was 0.472, 0.475 and 0.460, respectively. The area of poor grade habitat accounted for about 50% of the study area, and the area of good grade and excellent grade habitat was less than 25%. The area of poor grade habitat increased; (3) The habitat degradation degree under the ecological protection scenario of Shilin County in 2030 is significantly lower than that of the other two scenarios, among which Guishan Town has the highest habitat quality and Lufu Street the lowest. Shilin County is currently facing the dual contradiction between economic development and ecological protection. The spatial distribution of landscape pattern and habitat quality is closely related to human activities. The risk of potential rocky desertification distribution areas may be aggravated by unreasonable human activities. In the future, urban planning should be carried out reasonably according to the environmental characteristics of the study area to prevent habitat deterioration in potential risk areas. Based on the ecological protection scenario, Shilin County has better allocation of land resources and stable changes in habitat quality, which is more in line with the future development path of Shilin County.

Key words: karst, ecologically fragile area, habitat quality, multi-scenario simulation, Shilin County