沱江流域城市生态安全评价及其耦合特征分析  

Evaluation of Urban Ecological Security in Tuojiang River Basin and Analysis of Its Coupling Characteristics

作　　者：李倩娜 唐洪松 LI Qianna;TANG Hongsong(Tuojiang River Basin High-quality Development Research Center,Neijiang Normal University,Neijiang Sichuan 641000,China;School of Economics and Management,Neijiang Normal University,Neijiang Sichuan 641000,China)

机构地区：[1]内江师范学院沱江流域高质量发展研究中心,四川内江641000 [2]内江师范学院经济与管理学院,四川内江641000

出　　处：《生态经济》2021年第12期91-97,114,共8页Ecological Economy

基　　金：四川省社会科学规划项目青年项目“沱江流域生态补偿实践困境及破解对策研究”(SC20C057);四川省社会科学规划项目基地重大项目“沱江流域水环境综合治理与可持续发展模式研究”(SC20ED019);四川省社会科学重点研究基地沱江流域高质量发展研究中心项目“基于PSR模型的沱江流域城市生态安全评价研究”(TJGZL2020-11);内江师范学院科研项目“基于PSR模型的沱江流域生态安全评价研究”(2019QN07)。

摘　　要：构建“压力—状态—响应(PSR)”模型,利用熵权综合评价法和耦合协调度评价法,分析比较沱江流域沿线成都、自贡、泸州、德阳、内江和资阳6个城市生态安全及耦合协调水平,并利用GIS技术进行空间差异刻画。研究结果表明,沱江全流域生态安全等级由Ⅳ级向Ⅱ级转变,生态安全响应指数和生态安全状态指数稳步上升,带动生态安全水平整体向好发展。各城市压力、状态、响应三个系统处于高度耦合阶段,以基本协调和中度协调类型为主,成都属于“响应超前—状态滞后”型,自贡、泸州、内江、资阳属于“状态超前—压力滞后”型,德阳属于“响应超前—压力滞后”型。对此,应加快产业结构升级、控制污染物粗放排放、加大环境治理力度等。Constructing a“pressure-state-response(PSR)”model,using entropy comprehensive evaluation method and coupling coordination degree evaluation method,the paper analyzes and compares the ecological security and coupling coordination of 6 cities along the Tuojiang River Basin:Chengdu,Zigong,Luzhou,Deyang,Neijiang and Ziyang Level,and it then uses GIS technology to describe spatial differences.The results of the study show that the ecological security level of the entire Tuojiang river basin has changed from levelⅣto levelⅡ,and the ecological security response index and ecological security status index have steadily increased,driving the overall development of ecological security.The three systems of pressure,status,and response of each city are in In the highly coupled stage.Basic coordination and moderate coordination are the main types.Chengdu belongs to the“response leading-state lag”type,Zigong,Luzhou,Neijiang,and Ziyang belong to the“state leading-pressure lag”type,and Deyang belongs to the“response leading-pressure lag”type.In response to this,we should speed up the upgrading of industrial structure,control extensive discharge of pollutants,and strengthen environmental governance.

关 键 词：生态安全 沱江流域 PSR模型 耦合协调度 

分 类 号：X826[环境科学与工程—环境工程] F062.2[经济管理—政治经济学]