Dynamic evolution characteristics and influencing factors of ecological security level in Qinghai Province
In order to explore the spatiotemporal changes in the ecological security level of Qinghai Province and build a national ecological security barrier,through remote sensing geographical data such as land use and Landsat images,as well as data related to economic and social development,based on the im-proved ecological support force(ESC)model,the entropy weight TOPSIS,kernel density,standard devia-tion elliptical model,obstacle degree model,and geographical detectors were used to study the spatiotem-poral dynamic evolution characteristics and influencing factors of ecological security in Qinghai Province.The results show that:(1)From 1990 to 2020,the ecological security level of Qinghai Province showed a fluctuating upward trend,with 87.50％of the cities and states in the ecological stable zone and 12.50％of the cities and states in the ecological improvement zone.(2)The province's ecological security level shows the spatial distribution characteristics of"east-west ecological dual core"and"east-west extension and north-south contraction"spatial evolution characteristics,with an obvious polarization trend.(3)From the perspective of internal factors,the largest criterion-level obstacle factor to ecological security in Qinghai Province is ecological structure,and the most important indicator-level obstacle factors are leaf area index and landscape fragmentation.From the perspective of external factors,government intervention,urbaniza-tion rate,population density,per capita GDP,and industrial structure play a significant role in the ecolog-ical security of Qinghai Province.
ecological securityecological support forcedynamic evolution characteristicinfluencing factorharmonious coexistence between human and nature
NETL
NSTL
万方数据
