The evaluation of ecological vulnerability of Xilingol based on EVI

doi:10.13474/j.cnki.11-2246.2022.0289

Abstract

Abstract: Based on the composite index method, this paper constructs an ecological vulnerability model. On this basis, we study spatio-temporal evolution of ecological vulnerability in the past 20 years by means of gravity transfer and trend analysis. What is following is the discussion on the driving influence of natural and social factors on ecological vulnerability and the characteristics of spatio-temporal distribution. Our major findings include:① In terms of time, the overall ecological vulnerability of the study area improves, and the disturbance partition feature is significant. The ecological management of mining and pastoral areas has been effective, while the ecological vulnerability of agricultural areas has been degraded and needs to be controlled further. ② Spatially, the distribution of ecological vulnerability in the study area is in a stepped distribution and the center of gravity of ecological vulnerability gradually shifts to the east. The ecological vulnerability in western Xilingol has been continuously improves, and in the central and eastern regions it has been relatively stable, with degradation occurring in local areas. ③ As far as driving factors is concerned, the dominant characteristics of natural factors are significant on the spatial scale, and the dominant characteristics of social factors are gradually strengthened over time.

Key words: ecological vulnerability, spatio-temporal evolution, spatial heterogeneity, influencing factors, Xilingol

CLC Number:

P237

LI Maolin, YAN Qingwu, LI Guie. The evaluation of ecological vulnerability of Xilingol based on EVI[J]. Bulletin of Surveying and Mapping, 2022, 0(10): 21-27.

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