水生态学杂志2024，Vol.45Issue(3)：60-69,10.DOI:10.15928/j.1674-3075.202309210261
黄河流域生态环境质量时空演变及驱动力分析
Spatial-temporal Evolution and Driving Force Analysis of Eco-environmental Quality in the Yellow River Basin
摘要
Abstract
The Yellow River basin is an important ecological barrier in China.Exploring the spatiotempo-ral evolution and driving factors of eco-environmental quality is important for decision making on ecolog-ical management and high-quality development in the basin.In this study,we evaluated the quality of the ecological environment in the Yellow River basin from 2000 to 2022 using the remote sensing ecological index(RSEI),a comprehensive metric calculated from the normalized difference vegetation index(ND-VI),wetland extent trends(WET),land surface temperature(LST)and the normalized difference bareness index(NDBI).Data sources for the study include moderate resolution imaging spectrometer(MODIS)da-ta and natural environment data(temperature,TEM;precipitation,PRE;soil moisture,SOI;solar net radi-ation,SNR;slope and elevation,DEM;wind speed,WS).Sen's trend analysis method and the Mann-Kendall test were used to characterize the spatial evolution of RSEI.Then,the quantile regression model and residual analysis were applied to quantify the effects of factors influencing the RSEI and ascertain the relative contributions of human activities and natural factors.Results were as follows:Eco-environmental quality improved during the 20 year study period,and the average annual RSEI in the Yellow River basin was 0.465 for 2000-2022,with an average annual increase of 0.55％.The largest RSEI increase was in the middle reaches of the Yellow River basin,but the RSEI improved in 74.94％of the Yellow River basin area,and significantly improved in central Inner Mongolia and northern Shanxi and Shaanxi.The seven environmental factors all had positive effects on the RSEI,with the most significant impacts by PRE and DEM.There were also significant differences in the impact of the same factors on the RSEI of different quantiles.As the RSEI quantile increases,the relative influences of temperature,precipitation and elevation trended downward.The impact of natural environmental factors and human activities,as well as their combined effect on RSEI were quantified,and their respective contributions were 15.38％,20.62％and 64.00％of the area with positive RSEI changes in the Yellow River basin.Our results provide data for scientifically based decision-making to support sustainable development and harmony between humans and their land in the Yellow River basin.关键词
遥感生态指数/时空演化/驱动因素/分位数回归模型/黄河流域Key words
remote sensing ecological index/spatiotemporal evolution/driving factors/quantile regression model/Yellow River basin分类
管理科学引用本文复制引用
董洁芳,武荣伟,赵艳芬..黄河流域生态环境质量时空演变及驱动力分析[J].水生态学杂志,2024,45(3):60-69,10.基金项目
云南省教育厅科学研究基金(2022Y288). （2022Y288）
