摘要
采用西江流域武宣站集水区68个气象站点1961—2014年的逐日气象观测资料和12个水文站点1961—1989年日径流资料以及植被、土壤数据,驱动VIC水文模型计算水文要素的时空分布,构建网格尺度的标准化帕尔默干旱指数(SPDI),结合游程理论识别历史干旱事件,分析了SPDI在西江流域干旱评估的适用性以及历史干旱事件的时空变化特征。结果表明:SPDI在西江流域干旱评估中具有良好的适用性;1961—2014年西江流域干旱频次、历时总体呈增加的趋势;1960、1980和2000年代属旱情较严重年代,21世纪以来西江流域干旱化趋势更为明显。
Based on the daily meteorological observation data of 68 meteorological stations from 1961 to 2014,daily runoff data of 12 hydrological stations from 1961 to 1989,vegetation data and soil data in the catchment area of Wuxuan Station in the Xijiang River Basin were used to drive VIC hydrological model to calculate the spatial and temporal distribution of hydrological elements,and to construct a standardized Palmer drought index(SPDI)of grid scale.The run theory was used to identify the historical drought events,and the feasibility of SPDI in drought assessment in the Xijiang River Basin was evaluated.Meanwhile,the spatiotemporal feature of historical drought events was analyzed.Results show that SPDI is feasible for drought assessment in the Xijiang River Basin.In the period of 1961-2014,drought frequency and duration in the Xijiang River Basin have an overall increasing trend.The 1960 s,1980 s and 2000 s are the serious drought years,and the trend of drought in Xijiang River Basin is more obvious since the 21 st century.
作者
袁飞
章益棋
刘懿
马明卫
张利敏
石佳勇
YUAN Fei;ZHANG Yiqi;LIU Yi;MA Mingwei;ZHANG Limin;SHI Jiayong(College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University,Nanjing 210098,China;College of Water Resources,North China University of Water Resources and Electric Power,Zhengzhou 450046,China)
出处
《水资源保护》
CAS
CSCD
北大核心
2021年第1期46-52,共7页
Water Resources Protection
基金
“十三五”国家重点研发计划(2016YFA0601500)
国家自然科学基金(51779070)
中央高校基本科研业务费专项(2019B10314)。
关键词
标准化帕尔默干旱指数
干旱评估
VIC模型
游程理论
西江流域
standardized Palmer drought severity index
drought assessment
VIC model
run theory
Xijiang River Basin
