山东建筑大学学报2025，Vol.40Issue(3)：115-125,134,12.DOI:10.12077/sdjz.2025.03.015
2002-2022年黄河流域生态质量时空变化分析
Temporal and spatial changes of ecological quality in the Yellow River Basin from 2002 to 2022
摘要
Abstract
As a vital ecological barrier and economic lifeline in China,the ecological protection and high-quality development of the Yellow River Basin are of paramount importance.This study focuses on the spatiotemporal changes in ecological quality in the basin from 2002 to 2022,aiming to provide a solid theoretical foundation for ecological conservation and sustainable development.Utilizing the Google Earth Engine(GEE)platform,MODIS remote sensing imagery was reconstructed through Harmonic Analysis of Time Series(HANTS),and a Remote Sensing Ecological Index(RSE)was developed based on principal component analysis to assess the ecological quality dynamics of the region.The results demonstrate that the HANTS reconstruction method significantly enhances the explanatory power of the RSEI,with the contribution rate of the first principal component exceeding,86%.The spatial distribution rate of ecological quality exhibits a distinct"diagonal"pattern-with poor to moderate ecological conditions predominantly in the northwest,and good to excellent conditions mainly in the southeast.During the study period,the basin experienced an initial phase of degradation(2002-2010)followed by a phase of improvement(2010-2022).Over the 20-year span,approximately 4.73%of the area maintained stable ecological quality,53.81%showed signs of improvement,while 41.46%faced a risk of degradation.关键词
黄河流域/RSEI/生态环境/时间序列谐波/GEEKey words
Yellow River basin/RSEI/ecological environment/time series harmonics/GEE分类
信息技术与安全科学引用本文复制引用
钱鑫彤,付萍杰,田浩,孟飞..2002-2022年黄河流域生态质量时空变化分析[J].山东建筑大学学报,2025,40(3):115-125,134,12.基金项目
国家自然科学基金项目(42101388) （42101388）
