基于GEE的莆田市木兰溪流域生态环境质量变化特征分析  

An Analysis of the Characteristics of Ecological Environment Quality Changes in Mulan River Basin of Putian City Based on GEE

作　　者：林彦予 傅文杰 罗范颖 LIN Yanyu;FU Wenjie;LUO Fanying(School of Environmental and Biological Engineering,Putian University,Putian Fujian 351100,China;School of Civil Engineering,Putian University,Putian Fujian 351131,China)

机构地区：[1]莆田学院环境与生物工程学院,福建莆田351100 [2]莆田学院土木工程学院,福建莆田351131

出　　处：《莆田学院学报》2025年第2期86-92,共7页Journal of putian University

基　　金：福建省自然科学基金资助项目(2023J011000)。

摘　　要：以木兰溪为研究对象,基于谷歌地球引擎(GEE),采用2002—2021年Landsat 5/7/8遥感影像,建立遥感生态环境指数(RSEI),并结合土地利用数据进行环境分析。利用Mann-Kendall检验法和Theil-Sen Median斜率法探究木兰溪流域生态环境质量变化趋势,结果表明:1)2002—2021年研究区RSEI、绿度(NDVI)、湿度(Wet)总体呈上升趋势,区域生态环境质量持续改善;2)木兰溪流域以RSEI存在增加趋势的区域为主,面积占比为62.81%;3)研究区内生态质量等级为优、良的区域占比最高,历年占比均超过43%。通过探究木兰溪流域生态质量的时空变化趋势,能够为后续环境治理提供理论参考,并为相关研究提供借鉴。Taking Mulan River as the research object,based on Google Earth Engine(GEE),using Landsat 5/7/8 remote sensing images from 2002 to 2021,the Remote Sensing Ecological Index(RSEI)was established,and the environmental analysis was carried out,combined with land use data.Mann-Kendall test and Theil-Sen median slope method were used to explore the change trend of ecological quality in the watershed.The results showed that:1)RSEI,the greenness(NDVI)and humidity(Wet)in the study area showed an upward trend from 2002 to 2021,and the regional ecological environment quality continued to improve;2)The Mulan River Basin is dominated by areas with an increasing trend of RSEI,accounting for 62.81%;3)The study area is dominated by areas with excellent and good ecological quality,accounting for more than 43%over the years.By exploring the temporal and spatial variation trend of ecological quality in Mulan River Basin,it can provide theoretical reference for subsequent environmental governance and relevant research.

关 键 词：生态环境质量 木兰溪流域 土地利用 谷歌地球引擎 

分 类 号：X821[环境科学与工程—环境工程]