首页|2022年江西省干旱时空演变特征研究

2022年江西省干旱时空演变特征研究

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2022年江西省遭遇了罕见的特大干旱,对社会经济、生产生活带来一定影响,基于标准化降水指数(Standardized Precipitation Index,SPI)和土壤相对湿度指数(Relative soil moisture,Rsm)对 2022 年江西省干旱时空演变特征进行分析研究.将气象干旱发展划分为4个阶段并识别其时空变化特征,利用相关性分析农业干旱与气象干旱之间的时间响应,揭示不同土壤深度的干旱变化过程.研究结果表明:(1)2022年江西省干旱主要发生在7-12月,气象干旱发展过程可划分为干旱露头期、暴发期、持续期、缓解期;(2)2022年江西省农业干旱发生时间比气象干旱晚1个月,降水对研究区Rsm的影响要明显大于气温且20cm的Rsm与SPI-1指标相关性最大;(3)水利工程在抗旱期间发挥了重要作用,江西省粮食生产"十年丰"实现大旱之年无大灾.
Study on the spatial and temporal evolution characteristics of drought in Jiangxi Province in 2022
In 2022,Jiangxi Province encountered a rare drought in 61 years,which had a certain impact on the social economy,production and life,and the temporal and spatial variation characteristics of drought in Jiangxi Province in 2022 were analyzed based on standardized precipitation index and soil relative humidity index.The de-velopment of meteorological drought is divided into four stages and its spatio-temporal change characteristics are identified,and the temporal response between agricultural drought and meteorological drought is analyzed by corre-lation to reveal the drought change process in different soil depths.The results show that:(1)the drought in Jian-gxi Province in 2022 mainly occurs from July to December,and the development process of meteorological drought can be divided into drought outcropping period,outbreak period,continuous period and mitigation period;(2)In 2022,the occurrence time of agricultural drought in Jiangxi Province is one month later than that of meteorological drought,and the impact of precipitation on Rsm in the study area is significantly greater than that of temperature,and Rsm of 20 cm is the most correlated with SPI-1 index.(3)Water projects play an important role in the drought control period,and the goal of Jiangxi Province's grain production"ten years of abundance"is achieved without major disasters in the year of drought.

Jiangxi Provincedrought in 2022standardized precipitation indexrelative soil moisturedevelop-ment processdelay time

贺双燕、杨晓静、刘俊钊、李云霄、李占玲、刘业伟

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中国水利水电科学研究院,北京 100038

中国地质大学(北京)水资源与环境学院,北京 100083

水利部防洪抗旱减灾工程技术研究中心,北京 100038

重庆市水利电力建筑勘测设计研究院有限公司,重庆 400020

江西省水利科学院,江西南昌 330029

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江西省 2022年干旱 标准化降水指数 土壤相对湿度 发展过程 滞后时间

国家重点研发计划江西省"科技+水利"联合计划中国水科院基本科研业务费项目江西省重点研发计划

2023YFC32060012022KSG01002JZ110145B003202320232BBG70029

2024

10.13244/j.cnki.jiwhr.20230097

中国水利水电科学研究院学报(中英文)
中国水利水电科学研究院

中国水利水电科学研究院学报(中英文)

CSTPCD北大核心
影响因子：0.523
ISSN：2097-096X
年,卷(期)：2024.22(1)
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