水土保持研究2024，Vol.31Issue(5)：279-287,9.DOI:10.13869/j.cnki.rswc.2024.05.009
内蒙古草原内陆河流域水文循环要素时空演变及驱动因素
Spatial-Temporal Evolution and Driving Factors of Hydrological Cycle Factors in Inland River Basin of Inner Mongolia Gassland
摘要
Abstract
[Objective]The aim of this study is to examine the response of hydrological cycle factors to vegetation dynamics and climate change in the inland river basin of Inner Mongolia grassland,which is of important theoretical significance for the ecological protection and regional water resources development and utilization in the inland river basin of Inner Mongolia grassland.[Methods]The inland river basin of Inner Mongolia grassland was taken as the research area.Based on multi-source remote sensing,climate,meteorology,hydrology and other data,the temporal and spatial evolution and driving factors of hydrological cycle elements in the basin were analyzed by trend test,significance test and correlation analysis.[Results](1)The evapotranspiration of the basin showed a significant upward trend(0.994 mm/a),the precipitation showed a significant downward trend(1.965 mm/a),and the soil moisture showed an increasing trend.(2)The vegetation in the growing season generally showed an increasing trend.The normalized difference vegetation index(NDVI),gross primary productivity(GPP)and leaf area index(LAI)showed a ladder-like spatial distribution pattern of high level in the east and low level in the west,and the temperature showed an overall upward trend.(3)Vegetation change was positively correlated with evapotranspiration(ET)and soil moisture(SSM).There was a significant positive correlation between temperature and evapotranspiration(R=0.699,p=0.01),and the spatial correlation increased from west to east.There was a negative correlation between temperature and runoff,and a significant negative correlation with soil moisture in the east and west of the basin.[Conclusion]The hydrological cycle variables(precipitation,evapotranspiration,soil moisture,runoff)increased with the increase of vegetation.Precipitation,soil moisture and runoff decreased with the increase of temperature,and evapotranspiration increased with the increase of temperature.关键词
草原内陆河流域/气候变化/植被动态/水文响应/趋势分析Key words
grassland inland river basin/climate change/vegetation dynamics/hydrological response/trend analysis分类
天文与地球科学引用本文复制引用
王银龙,高瑞忠,房丽晶,张旭,李宝群..内蒙古草原内陆河流域水文循环要素时空演变及驱动因素[J].水土保持研究,2024,31(5):279-287,9.基金项目
国家自然科学基金"草原煤田开采驱动下流域水文-生态-地质演化机制及协同效应研究"(52169004) （52169004）
"寒旱区高原内陆河草原流域生态水文-化学协同演化过程试验与模拟研究"(51969022) （51969022）
