近30年三峡库区生态系统服务价值与生态风险时空变化及相关性研究

doi:10.11870/cjlyzyyhj202103013

长江流域资源与环境 >> 2021, Vol. 30 >> Issue (3): 654-666.doi: 10.11870/cjlyzyyhj202103013

近30年三峡库区生态系统服务价值与生态风险时空变化及相关性研究

李辉^1,2，周启刚¹，李斌³，国洪磊⁴，王福海^1,2，何昌华^1,2

（1.生态环境空间信息数据挖掘与大数据集成重庆市重点实验室，重庆 401320;2.重庆财经学院，重庆 401320; 3.重庆工商大学公共管理学院，重庆 400067;4.南京师范大学虚拟地理环境教育部重点实验室，江苏南京 210023)

出版日期:2021-03-20 发布日期:2021-04-07

Spatiotemporal Change and Correlation Analysis of Ecosystem Service Values and Ecological Risk in Three Gorges Reservoir Area in the Past 30 Years

LI Hui ^1,2,ZHOU Qi-gang ¹,LI Bin³ ,GUO Hong-lei⁴ ,WANG Fu-hai ^1,2,HE Chang-hua ^1,2

(1.Chongqing Key Laboratory of Spatial Information Data Mining and Big Data Integration of Ecological Environment,Chongqing 401320,China;
2.Chongqing Finence and Economics College,Chongqing 401320,China;3.Public Administration School of Chongqing Technology
and Business University, Chongqing 400067, China;4.Key Laboratory of Virtual Geographic Environment
(Nanjing Normal University),Ministry of Education,Nanjing 210023,China)

Online:2021-03-20 Published:2021-04-07

摘要/Abstract

摘要： 随着空间要素的集聚和经济快速发展，大量生态用地向非生态用地转变、区域景观格局中的关键生态涵养源不断萎缩、生态服务功能弱化等，使得生态安全面临新的挑战。文章在RS和GIS技术的支撑性下，以1986、1995、2000、2007、2010和2018年6期三峡库区Landsat TM/Landsat 8OLI遥感影像为数据源，基于5 km*5 km评价单元格，核算了30年来三峡库区生态系统服务价值和生态风险指数的时空分异特征及二者的相关性。研究结果表明：（1）1986~2018年三峡库区生态系统服务价值总量由1 639.56×108元持续增长到1 662.01×108元，整体增幅1.37%，高级别生态风险等级占比呈现缓慢降低趋势，总体下降10.89%，研究区生态状况有所改善；（2）三峡库区单位面积生态系统服务价值和生态风险指数在数值上存在一定的负向相关性，同时在空间上也具有一定的负向相关性；（3）生态系统服务价值和生态风险指数在变化速率上具有一定的非同步性，生态风险高指数区域所对应的生态系统服务价值具有较大降低的可能性，需要特别关注。研究旨为三峡水利工程的安全运行与三峡库区的可持续开发利用提供参考。

Abstract: A large number of ecological land use has been transformed to non-ecological land use, and the key ecological conservation sources in the regional landscape pattern have been shrinking, and the function of ecological services has been weakening, which makes ecological security face new challenges.With the agglomeration of spatial elements and the rapid development of economy.This paper calculates the spatial and temporal differentiation characteristics of ecosystem service value and ecological risk index in the Three Gorges Reservoir area in the past 30 years and their correlation,based on the Landsat TM/Landsat 8OLI images of the Three Gorges Reservoir area in 1986, 1995, 2000, 2007, 2010 and 2018, and based on the 5 km*5 km evaluation cell.The results show that:(1)The total value of ecosystem services in the Three Gorges Reservoir area continued to increase from 1 639.56*108 yuan to 1 662.01*108 yuan, with an overall increase of 1.37%.The proportion of high-level ecological risk levels showed a slow decreasing trend, with an overall decline of 10.89%, and the ecological situation of the study area improved from 1986 to 2018;(2)There is a certain negative correlation between ecosystem service value and ecological risk index per unit area in the Three Gorges Reservoir Area, and there is also a certain negative correlation in space;(3)The value of ecosystem services and ecological risk index are not synchronized in the change rate.The value of ecosystem services corresponding to the high-risk index region has a greater possibility of reduction, which needs special attention.The purpose of the study is to provide reference for the safe operation of the Three Gorges Project and the sustainable development and utilization of the Three Gorges Reservoir Area.

李辉, 周启刚, 李斌, 国洪磊, 王福海, 何昌华. 近30年三峡库区生态系统服务价值与生态风险时空变化及相关性研究[J]. 长江流域资源与环境, 2021, 30(3): 654-666.

LI Hui, ZHOU Qi-gang, LI Bin , GUO Hong-lei , WANG Fu-hai, HE Chang-hua. Spatiotemporal Change and Correlation Analysis of Ecosystem Service Values and Ecological Risk in Three Gorges Reservoir Area in the Past 30 Years[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2021, 30(3): 654-666.

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近30年三峡库区生态系统服务价值与生态风险时空变化及相关性研究

Spatiotemporal Change and Correlation Analysis of Ecosystem Service Values and Ecological Risk in Three Gorges Reservoir Area in the Past 30 Years

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