生态学报2026，Vol.46Issue(6)：3251-3262,12.DOI:10.20103/j.stxb.202501080060
2000-2023年延河流域需水量时空分布特征
Spatiotemporal distribution characteristics of water demand in the Yanhe River Basin from 2000 to 2023
摘要
Abstract
Based on meteorological data,remote sensing data,and population density statistics from 2000 to 2023 in the Yanhe River Basin,the ecological water demand and domestic water demand in the basin were calculated.It also analyzed the spatiotemporal evolution characteristics of the basin's water demands and explores the relationship between vegetation ecological water supply and demand.Besides,the ecological water demand and domestic water demand in the basin exhibited a significant upward trend,with an annual growth rate of 73 million.The growth rate of vegetation ecological water demand exhibits a spatial distribution pattern with lower values in the south and higher values in the north,primarily driven by precipitation and the increase in grassland vegetation cover due to the policy of converting farmland to forest.However,due to the uneven spatiotemporal distribution of precipitation and the limited water storage capacity of the soil have exacerbated ecological water shortages as ecological water demand increased.This issue was particularly severe in the central part of the basin.Moreover,during the vegetation growing period(April to October),ecological water shortages displayed a seasonal pattern of initial reduction followed by an increase.Additionally,the increasing trend was also reflected in the domestic water requirement,primarily driven by rising population density and livestock breeding,with an average annual growth rate of 84,100 m3.In summary,although ecological restoration has significantly improved vegetation coverage in the Yanhe River Basin,the limited precipitation exacerbates the supply-demand conflict of water resources due to ecological restoration.Simultaneously,socio-economic development has led to a gradual increase in domestic water demand,further compounding this contradiction.These findings provide scientific evidence for optimizing watershed water resource management and ecological restoration policies in the Yanhe River Basin.关键词
延河流域/生态需水/生活需水/供需平衡/退耕还林还草工程Key words
Yanhe River Basin/ecological water requirement/domestic water requirement/supply and demand balance/Grain for Green Project引用本文复制引用
刘静宜,戈文艳,炎艺霖,焦菊英,王飞..2000-2023年延河流域需水量时空分布特征[J].生态学报,2026,46(6):3251-3262,12.基金项目
国家自然科学基金项目(U2243213) （U2243213）
