气象、水文和社会经济干旱的特征与响应关系  

Characteristics and Response Relationship of Meteorological,Hydrological and Socioeconomic Droughts

作　　者：周佳伟 陈晓宏 ZHOU Jiawei;CHEN Xiaohong(School of Civil Engineering,Sun Yat-sen University,Zhuhai 519082,China;Center for Water Resources and Environment,Sun Yat-sen University,Guangzhou 501275,China;Key Laboratory of Water Cycle and Water Security in Southern China of Guangdong High Education Institute,Guangzhou 501275,China)

机构地区：[1]中山大学土木工程学院,广东珠海519082 [2]中山大学水资源与环境研究中心,广东广州510275 [3]华南地区水循环与水安全广东普通高校重点实验室,广东广州510275

出　　处：《水文》2022年第4期18-22,共5页Journal of China Hydrology

基　　金：国家自然科学基金资助项目(U1911204,51861125203);国家重点研发计划资助项目(2017YFC0405900);广东省水利科技创新项目(2018,2020)。

摘　　要：为研究社会经济干旱发生规律以及与气象水文干旱的关系,提出了一种识别社会经济干旱事件的新方法—标准化供需水指数(SSDWI),以鉴江流域为例,利用1960—2016年逐月降水、气温以及径流数据,使用标准化降水蒸散指数(SPEI)和径流干旱指数(SDI)表征气象水文干旱事件,探讨三种干旱之间的响应关系。结果表明:(1)SSDWI能较好地表征社会经济干旱事件,社会经济干旱主要发生在春季和秋季,干旱历时较长;气象干旱与水文干旱主要发生在秋季与冬季,干旱历时较短;(2)水文干旱与社会经济干旱具有紧密的相关性,水文干旱滞后于气象干旱1个月;社会经济干旱滞后于水文干旱1个月,滞后于气象干旱2个月。In order to study the regularity of socioeconomic drought and its relationship with meteorological and hydrological drought,this pa⁃per proposed standardized supply and demand water index(SSDWI)method to identify socioeconomic drought events.Taking Jianjiang River basin as example,SPEI and SDI were adopted to assess meteorological drought and hydrological drought respectively,and the response rela⁃tionship between the three types of droughts were explored based on the monthly precipitation,temperature and streamflow data from 1960 to 2016.The results show that:(1)SSDWI can better identify socioeconomic drought events.Socioeconomic droughts mainly occur in spring and autumn,and the drought lasts longer;meteorological and hydrological droughts mainly occur in autumn and winter,and the drought lasts short⁃er;(2)Hydrological drought is closely related to socioeconomic drought.Hydrological drought lags behind meteorological drought by 1 month,socioeconomic drought lags behind hydrological drought by 1 month,and lags behind meteorological drought by 2 months.

关 键 词：气象干旱 水文干旱 标准化供需水指数 社会经济干旱 干旱响应关系 

分 类 号：X915.5[环境科学与工程—安全科学]