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.
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)
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)。
关键词
生态环境质量
木兰溪流域
土地利用
谷歌地球引擎
ecological environment quality
Mulan River Basin
land use
Google Earth Engine
