测绘通报 ›› 2023, Vol. 0 ›› Issue (7): 7-13.doi: 10.13474/j.cnki.11-2246.2023.0193

• 生态环境时空演化分析 • 上一篇    下一篇

基于Google Earth Engine的巢湖流域生态环境质量时空动态变化及影响因素分析

王滢1, 李代伟1, 张帆1, 朱会子1, 李龙伟1,2, 李楠1,2   

  1. 1. 滁州学院地理信息与旅游学院, 安徽 滁州 239000;
    2. 实景地理环境安徽省重点实验室, 安徽 滁州 239000
  • 收稿日期:2022-10-11 出版日期:2023-07-25 发布日期:2023-08-08
  • 通讯作者: 李楠。E-mail:linan@chzu.edu.cn
  • 作者简介:王滢(2001-),女,主要研究方向为生态环境遥感。E-mail:2020210545@mail.chzu.edu.cn
  • 基金资助:
    国家自然科学基金(42101387);安徽省自然科学基金(2108085QD155);安徽省教育厅重点项目(KJ2020A00706);国家级大学生创新创业训练计划(202210377010)

Spatial and temporal dynamic change and influencing factors of ecological environment quality in Chaohu Lake basin based on GEE

WANG Ying1, LI Daiwei1, ZHANG Fan1, ZHU Huizi1, LI Longwei1,2, LI Nan1,2   

  1. 1. School of Geographical Information and Tourism, Chuzhou University, Chuzhou 239000, China;
    2. Anhui Province Key Laboratory of Physical Geographic Environment, Chuzhou 239000, China
  • Received:2022-10-11 Online:2023-07-25 Published:2023-08-08

摘要: 本文以巢湖流域为研究区,基于2000—2020年Landsat TM/OLI系列遥感数据,通过Google Earth Engine云计算平台构建遥感生态指数(RSEI),采用空间自相关与地理探测器等方法对巢湖流域生态环境质量进行大尺度、长时序动态监测分析与评价。结果表明:①研究区RSEI均值由2000年的0.70提升至2020年的0.74,整体上呈现改善趋势,研究区生态环境等级以优、良为主。②研究区全局Moran's I指数均大于0,巢湖流域生态环境质量在全局自相关上呈现聚类趋势,具有显著的空间正相关性,20年间“低-低”聚集区呈现先增加后减少趋势。③研究区生态环境受多因子影响,其中人为因素对2010年巢湖流域生态环境影响较大,进而导致生态环境质量下降。

关键词: 遥感, Google Earth Engine, 巢湖流域, 生态环境质量, 空间自相关, 地理探测器

Abstract: Taking Chaohu Lake basin as the research area, remote sensing ecological index (RSEI) is constructed through Google Earth Engine cloud computing platform, and large-scale and long-time dynamic monitoring analysis and evaluation of ecological environment quality in Chaohu Lake basin are carried out by means of spatial autocorrelation and geographic detectors based on Landsat TM/OLI series remote sensing data from 2000 to 2020. The results show that:①The average value of RSEI increased from 0.70 in 2000 to 0.74 in 2020, showing an overall improvement trend, and the ecological environment level is mainly excellent and good. ②The global Moran's I index of the study area is all greater than 0, and the ecological environment quality in Chaohu Lake basin presented a clustering trend on the global autocorrelation, with a significant spatial positive correlation. In the past 20 years, the low-low aggregation area had a trend of increasing firstly and then decreasing. ③The ecological environment is affected by many factors, among which human factors had a great impact on the ecological environment of Chaohu Lake basin in 2010, which leaded to the decline of ecological environment quality.

Key words: remote sensing, Google Earth Engine, Chaohu Lake basin, ecological environment quality, spatial autocorrelation, geographic detector

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