Construction of ecological security pattern in Chengdu-Chongqing Twin-City Economic Circle
ZHAO Wei1,2, ZOU Xin-yi3, PU Hai Xia1,2
1. College of Public Administration, Chongqing Technology and Business University, Chongqing 400067, China; 2. Research Center for Economy of Upper Reaches of the Yangtze River, Chongqing Technology and Business University, Chongqing 400067, China; 3. College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
Abstract:Took Chengdu-Chongqing Twin-City Economic Circle (CCTCEC) as the research object, and the ecological source areas were firstly identified based on Land-use datasets and the evaluation of ecosystem importance. The GIS spatial analysis technology, minimum cumulative resistance (MCR) model and night lighting optimization method then were applied to establish the regional ecological resistance surface.Finally, gravity model was used to identify key ecological corridors and ecological nodes to construct the ecological security pattern of the study area. The results showed that the ecological sources of CCTEC cover 24.8% of the total territory and mainly located on the east, south and west areas. 193 ecological corridors with the length of 6441.81km were successfully identified, and the density decreases from the east to the west in space. The key corridors account for 46.56% of the total identified corridors, which mainly distributed in the Northeast of study area including Dazhou, Wushan and Wuxi. Comprehensively, the "dual cores-two axes-half surrounded" spatial pattern had appeared.
赵伟, 邹欣怡, 蒲海霞. 成渝地区双城经济圈生态安全格局构建[J]. 中国环境科学, 2021, 41(5): 2423-2433.
ZHAO Wei, ZOU Xin-yi, PU Hai Xia. Construction of ecological security pattern in Chengdu-Chongqing Twin-City Economic Circle. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(5): 2423-2433.
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