基于GEE的萍乡市长时序生态环境质量演变研究  

Evolution of Long-time Series Ecological Environment Quality in Pingxiang City Based on GEE

作　　者：杭振泉 陈建平[1] HANG Zhenquan;CHEN Jianping(School of Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing 100083,China)

机构地区：[1]中国地质大学(北京)地球科学与资源学院,北京100083

出　　处：《三峡生态环境监测》2025年第1期98-110,共13页Ecology and Environmental Monitoring of Three Gorges

摘　　要：客观评价资源枯竭型城市的生态环境质量可以为城市的生态环境治理和可持续发展提供帮助。本文以萍乡市为例,基于谷歌地球引擎(GEE)平台的MODIS数据集计算得出萍乡市2003—2022年的遥感生态指数(RSEI),并结合转移矩阵分析、Theil-Sen Median趋势变化分析和Hurst指数持续性分析定量分析20年间萍乡市生态环境质量时空变化特征。结果显示:(1)萍乡市2003—2022年平均RSEI有56.5%的区域为较好,有11.4%的区域为极好,RSEI平均值为0.648。演变过程大致分为4个阶段,2003—2006年是波动上升期,2006—2008年是连续下降期,2008—2015年是波动上升期,2015—2022是波动下降期。(2)生态环境质量退化的区域集中在安源区及其与其他区县交界区域,生态环境质量改善的区域集中在莲花县、湘东区和芦溪县交界的区域。(3)萍乡市57.57%的区域生态环境呈现改善趋势,27.25%的区域生态环境呈恶化趋势,73.07%的区域Hurst指数小于0.5,其中22.10%的区域呈现弱持续性退化趋势,5.15%的区域呈现强持续性退化趋势,主要分布在中北部。总的来说,2003—2022年萍乡市生态环境质量整体较高,生态环境未来发展趋势良好。在南北方向上呈现城市发展区和生态涵养区交替的空间分布特点。但萍乡市RSEI变化整体持续性较弱,需要及时巩固生态治理成果。Objectively evaluating the ecological environment quality of resource-exhausted cities can support the ecological environ⁃ment management and sustainable development of the cities.This paper took Pingxiang City as an example,calculated the remote sensing ecological index(RSEI)of Pingxiang City from 2003 to 2022 based on the MODIS dataset of Google Earth Engine(GEE)platform.The characteristics of spatial and temporal changes of ecological environment quality in Pingxiang were quantitatively ana⁃lyzed by combining the transfer matrix analysis,the Theil-Sen Median trend change analysis,and the Hurst index persistence anal⁃ysis.The results show:(1)56.5%of the average RSEI of Pingxiang City from 2003 to 2022 is good,11.4%of the area is very good,and the average value of RSEI is 0.648.The evolution process is roughly divided into four phases,with a fluctuating upward period from 2003 to 2006,a continuous downward period from 2006 to 2008,2008—2015 is a period of fluctuating upward,and 2015—2022 is a period of fluctuating decline.(2)The areas with degraded ecological environment quality are concentrated in Anyuan District and its border areas with other districts and counties,and the areas with improved ecological environment quality are concen⁃trated in the areas bordering Lianhua County,Xiangdong District and Luxi County.(3)57.57%of the areas in Pingxiang City show an improving trend in ecological environment,and 27.25%show a deteriorating trend in ecological environment.73.07%of the ar⁃eas have a Hurst index of less than 0.5.22.10%of the areas show a weakly persistent trend of degradation,and 5.15%show a strong persistent trend of degradation,which is mainly located in the central and northern parts of the city.In all,the overall ecolog⁃ical environment quality of Pingxiang City is high from 2003 to 2022,and the future development trend of ecological environment is good.In the north-south direction,it presents the spatial distribution characteristics of alternating urban development areas and ecologic

关 键 词：生态环境质量 遥感生态指数 谷歌地球引擎平台 趋势分析 萍乡市 

分 类 号：X87[环境科学与工程—环境工程]