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生态学杂志 ›› 2023, Vol. 42 ›› Issue (2): 436-444.doi: 10.13292/j.1000-4890.202302.017

• 研究报告 • 上一篇    下一篇

基于GEE和RSEI的长三角一体化示范区生态环境质量动态评估

何天星1,田宁1,周锐1,2,3*,马群1,3,张洁1,高峻1,3


  

  1. 1上海师范大学环境与地理科学学院, 上海 200234; 2北京大学城市与环境学院, 北京 100871; 3上海长三角城市湿地生态系统国家野外科学观测研究站, 上海 200234)

  • 出版日期:2023-02-10 发布日期:2023-07-10

Dynamic assessment of ecoenvironmental quality in Yangtze River Delta integration demonstration area based on GEE and RSEI.

HE Tian-xing1, TIAN Ning1, ZHOU Rui1,2,3*, MA Qun1,3, ZHANG Jie1, GAO Jun1,3   

  1. (1School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, China; 2College of Urban and Environmental Sciences, Peking University, Beijing 100871, China; 3Yangtze River Delta Urban Wetland Ecosystem National Field Observation and Research Station, Shanghai 200234, China).

  • Online:2023-02-10 Published:2023-07-10

摘要: 生态环境质量变化的及时监测与定量评估,可为区域生态环境协同治理与管控政策制定提供决策支持。本研究基于Landsat5/TM和Landsat8/OLI影像,利用Google Earth Engine(GEE)平台和遥感生态指数(RSEI),综合考虑湿度、绿度、干度和热度等多种生态环境要素,对长三角一体化示范区2000—2020年生态环境质量变化进行了评估,并结合GDP和人口数据分析了社会经济因子对生态环境质量的影响。结果表明:绿度是对研究区生态环境质量贡献率最大的指标,且具有正面效应,而热度指标是引起生态环境质量退化的主要因素;研究区生态环境质量总体上处于中等水平,且呈现平稳上升趋势,其中,青浦区生态环境质量上升趋势明显,而吴江区和嘉善县的生态环境质量略有下降;2000—2020年,研究区生态环境质量提高区域面积占比(30.45%)略高于下降区域(28.35%),良好和优等级区域占比由27.34%增至29.79%,在不同时段,区县间和街镇间差异较为显著;人口增长对生态环境质量具有明显的负面影响,而经济发展并未以牺牲生态环境为代价,二者之间表现为脱钩关系。


关键词: 生态环境质量, 遥感生态指数, Google Earth Engine, 长三角一体化示范区

Abstract: The rapid monitoring and quantitative evaluation of eco-environmental quality change can provide decision support for regional ecological environment collaborative governance and management policy formulation. Based on Landsat5/TM and Landsat8/OLI images, using Google Earth Engine (GEE) platform and Remote Sensing Ecological Index (RSEI), comprehensively considering various eco-environmental factors such as humidity, greenness, dryness, and heat, we quantitatively evaluated the changes of eco-environmental quality in the Yangtze River Delta integration demonstration area from 2000 to 2020. We analyzed the effects of social and economic factors on eco-environmental quality by combining GDP and population data. The results showed that greenness contributed most and positively to the eco-environmental quality of the study area. Thermal index was the main factor resulting in the degradation of regional eco-environmental quality. The eco-environmental quality of the study area was generally at a medium level, which showed a steady upward trend during 2000-2020. Specifically, the eco-environmental quality of Qingpu District increased obviously, while that of Wujiang District and Jiashan County decreased slightly. From 2000 to 2020, the proportion of areas with improved eco-environmental quality (30.45%) was slightly higher than that of degraded area (28.35%), and the proportion of areas with good and excellent grades increased from 27.34% to 29.79%. There were significant differences in eco-environment quality among districts/counties and towns in different periods. Population growth had a significant negative impact on eco-environment quality. Economic development was not at the cost of eco-environment, and the relationship between economic development and eco-environment quality was decoupled.


Key words: eco-environmental quality, remote sensing based ecological index, Google Earth Engine, Yangtze River Delta integration demonstration area.