水资源保护2024，Vol.40Issue(2)：141-149,9.DOI:10.3880/j.issn.1004-6933.2024.02.018
变化环境下黄河流域内蒙古段植被与水文要素的时空协同演变
Spatio-temporal co-evolution of vegetation and hydrological elements under a changing environment in the Inner Mongolia section of the Yellow River Basin
摘要
Abstract
In order to investigate the spatiotemporal evolution rule of vegetation and water in arid and semi-arid areas of China,this study obtained the information of precipitation,evapotranspiration,runoff,surface soil moisture and total land water storage variations in the Inner Mongolia section of the Yellow River Basin by integrating multi-source satellite remote sensing observation,reanalysis datasets,and model simulation data.The spatiotemporal evolution characteristics of vegetation and water resources in different land use types from 2003 to 2018 were analyzed,and the interaction patterns between vegetation and various hydrological elemcnts were explored.The results indicate that the increase of forest vegetation coverage in the eastern part of the Inner Mongolia section of the Yellow River Basin leads to the increase of evapotranspiration.The sum of annual evapotranspiration and runoff is 16.5 mm higher than the precipitation,resulting in the decrease of soil moisture and groundwater storage.The annual irrigation water consumption in farmlands ranges from 101.3 to 108.9 mm,and increases with the annual increase of cropland vegetation cover.Although the sum of annual evapotranspiration and runoff in grassland areas is lower than the precipitation,the continuous increase of grassland vegetation coverage significantly reduces the water surplus,resulting that the water consumption of grassland is approaching its eco-hydrological threshold.Total land water storage equivalent water height decreases at a rate of(7.5±1.9)mm per year,indicating a trend of groundwater depletion in the region.The interannual fluctuation of precipitation shows a gradually diminishing impact on vegetation coverage and evapotranspiration,as well as a decreasing influence on the changes of surface soil moisture in forests.关键词
植被/水文要素/生态恢复/时空演变/黄河流域内蒙古段Key words
vegetation/hydrologic components/ecological restoration/spatio-temporal evolution/Inner Mongolia section of the Yellow River Basin分类
资源环境引用本文复制引用
陈永喆,徐于月,龙笛,崔艳红,张才金,崔英杰,王怡璇,白亮亮,郭建英,刘廷玺,卢静..变化环境下黄河流域内蒙古段植被与水文要素的时空协同演变[J].水资源保护,2024,40(2):141-149,9.基金项目
内蒙古自治区科技重大专项(2020ZD0009) （2020ZD0009）
国家自然科学基金项目(52079065) （52079065）
