Spatiotemporal Evolution of Ecological Security in the Wanjiang City Belt, China
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Springer Science Press www.springerlink.com/content/1002-0063
Spatiotemporal Evolution of Ecological Security in the Wanjiang City Belt, China CAO Yuhong1, LIU Meiyun1, ZHANG Yu2, CHEN Chen1, CAO Weidong2 (1. School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China; 2. School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China) Abstract: Ecological security is the foundation and guarantee of sustainable development, and its importance is increasingly widely recognized and valued by the world. The Yangtze River Basin is an important ecological security barrier in China and the Wanjiang City Belt (WCB) along the Yangtze River is directly related to the ecological security pattern of the entire basin. Based on the Driver-Pressure-State-Impact-Response (DPSIR) model and a geographical information system (GIS) platform, an ecosystem security evaluation index system was constructed to measure and evaluate the evolution of ecosystem security in the WCB, China. Results showed that: 1) From 2000 to 2018, the overall level of ecological security in the study area was in a state of either early warning or medium warning, but the level of ecological security in each prefecture-level city was significantly different. 2) From the perspective of the evolution of the ecosystem, the value of its comprehensive evaluation index dropped from 4.255 in 2000 to 3.885 in 2018. From the perspective of subsystems, the value of Pressure comprehensive evaluation index is much higher than that of other subsystems, indicating that during the rapid development of the social economy, the pressure on the natural environment tended to rise, and triggered changes in the State and Response subsystems. 3) The coefficient of variation (CV) of the Driver was much higher than other factors influencing the ecological security system. There are large differences in the economic development and ecological evolution of the cities in the WCB. This study has improved the theoretical research on regional ecological security, and has certain practical guiding significance for building a beautiful, green and sustainable China and promoting global ecological security. Keywords: ecological security; complex ecosystem; spatiotemporal evolution; spatial difference; Wanjiang City Belt (WCB) Citation: CAO Yuhong, LIU Meiyun, ZHANG Yu, CHEN Chen, CAO Weidong. Spatiotemporal Evolution of Ecological Security in the Wanjiang City Belt, China. Chinese Geographical Science. https://doi.org/10.1007/s11769-020-1156-6
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Introduction
Since the United Nations sustainable development strategy was proposed in ‘Our Common Future’ in 1987 (WCED, 1987), the world has been actively developing a green economy and giving attention to protection of the ecological environment. At the time the sustainable development strategy was proposed, the main consideration for protecting the ecological environment was the mutual relationship between the contemporary and next generations (Braun et al., 2015; Rak and Pietrucha-
Urbanik, 2019). Over the past thr
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