Ecological vulnerability analysis of alpine meadow area based on pattern-quality-function ratio:take Diqing in Yunnan as an example
This study established a pattern-quality-function framework to evaluate the spatial and temporal characteristics of ecosystem vulnerability in the alpine meadow area of northwestern Yunnan Province.Additionally,a geographically weighted regression(GWR)model was utilized to analyze the spatial heterogeneity of driving factors on ecosystem vulnerability changes.The results showed that:(1)The ecosystem vulnerability index(EVI)decreases from north to south in the alpine meadow area of northwest Yunnan.(2)From 2000 to 2020,the ecosystem vulnerability index in the northern part of Diqing showed an increasing trend,with a maximum increase of 0.30,while a decreasing trend was detected in most areas in the central and southern parts of the region.(3)The influencing factors have significant impacts on the ecosystem vulnerability.The climate factors were sensitive to ecosystem vulnerability in the northern and southern parts of Diqing.Factors such as economic(GDP)and population(POP)were the main contributors to increasing the regional ecosystem vulnerability.
pattern-quality-functionecosystem vulnerabilitydriver analysisalpine meadow areaDiqing in Yunnan
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