Spatio-temporal evolution of ecosystem health in Anhui Province from 1980 to 2015
WANG Zuo1,2(), WANG Meng1,2, WANG Changchang1,2, LI Hu1,2, ZHANG Yun1,2
1. School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China 2. Engineering Technology Research Center of Resources Environment and GIS, Anhui Normal University, Wuhu 241002, China
To explore the ecosystem health of Anhui Province in the context of modern urbanization, this study established an ecosystem health evaluation system for Anhui Province based on time-series land use type data using the vigour-organization-resilience (VOR) model. Then, this study defined the weights of indicators in the evaluation system using the entropy weight method and evaluated the ecosystem health of Anhui Province and its spatio-temporal evolution over the period from 1980 to 2015 on the county scale. The results show that: ① Anhui Province was dominated by counties with an unhealthy ecosystem, followed by counties with a subhealthy ecosystem, both of which accounted for 56.37% and 16.83%, respectively. Spatially, the comprehensive average multiyear health index and average multiyear health grade of Anhui Province’s ecosystem were higher in the south and lower in the north, strongly correlating with the landform type. Areas with Healthy and very healthy ecosystems were mostly distributed in the hilly and mountainous areas in the southern and western parts of the province. In contrast, areas with an unhealthy ecosystem were contiguously distributed in the Huai River Plain, the Jianghuai hilly area, and the plain area along the Yangtze River. Among, Qimen County, Huangshan City exhibited the highest comprehensive ecosystem health index of 0.92, and Luyang District of Hefei City displayed the lowest comprehensive ecosystem health index of about 0.17; ② The overall ecosystem of Anhui Province showed a healthy trend from 1980 to 2015. With 24 counties exhibiting increasing health grades and no counties displaying decreasing health grades, the average provincial health grade increased from unhealthy to subhealthy grades. Nevertheless, 13 counties exhibited decreasing comprehensive health index values, indicating unstable ecosystem health levels and risks of decreasing health grades. The findings of the study can, to some extent, provide a reference for Anhui Province to formulate reasonable land use policies, protect and manage the eco-environment, and optimize ecosystem service functions.
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2023, Vol. 35 
), 王萌1,2, 王畅畅1,2, 李虎1,2, 张运1,2
