Research on Ecosystem Service Value and Sensitivity of Chengdu,Deyang and Mianyang
Ecosystem service value and ecological sensitivity can affect the daily life of human being and regional coordination and sustainable development.Researches on these are of great significance to promote the construction of ecological civilization and support high-quality regional development.In this paper,land use dynamics,equivalent factor method,analytic hierarchy process and bivariate spatial autocorrelation method were adopted to study the change characteristics of land use,ecosystem service value and ecological sensitivity in Chengdu,Deyang and Mianyang from 2000 to 2020.The results showed that:(1)From 2000 to 2020,the area of cultivated land,grassland,and wetland in the study areas decreased,while the area of construction land,forests,water areas,and glaciers increased;(2)the ecosystem service value has shown a decreasing and then increasing trend in 20 years,with an overall increase of CNY2,360.55 x 106;and(3)the proportion of low sensitivity and moderate sensitivity in the study areas was close to 60％,and there was a significant positive correlation between ecosystem service value and ecological sensitivity.The study results had great visibility and reference.In the past 20 years,the construction land in Chengdu,Deyang and Mianyang has been expanding in a circle,and the ecosystem service value has increased,indicating that the ecological protection of the Chengdu Deyang and Mianyang has made achievements while economic develop-ment.In the future development of these areas,attention should be paid to the protection of permanent basic farmland and ecolog-ically sensitive areas.
Land useecosystem service valueecological sensitivitybivariate spatial autocorrelation
国家科技期刊平台
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