摘要
基于江西省36个气象站点1960~2018年的监测资料,利用SPEI指数、Mann-kendall趋势检验法分析江西省干旱变化特征及SPEI指数与作物受灾面积之间的相关性。结果表明,年干旱指数呈轻微下降趋势,年际旱涝交替,年度干旱主要分布在东北部、西部和东南部地区,多为全域性和局域性干旱且2000年后全域性干旱更为显著;季节性干旱多发于夏秋季,尤其以秋旱更为严重,春冬旱程度轻且多发于赣州南部,但春季2001年后呈干旱化趋势,夏、秋、冬季SPEI指数呈上升趋势,夏旱多发于西部,秋旱多发于东部且多为全域性或区域性干旱,甚至出现覆盖全省的严重伏秋旱;作物受灾面积与夏秋季SPEI指数有显著相关性,且夏旱对江西省作物影响强于秋旱。研究结果可为江西省防旱抗旱提供参考。
Based on the monitoring data of 36 meteorological stations in Jiangxi Province from 1960 to 2018,the characteristics of drought change and the correlation between SPEI index and M-K trend test.The results show that the SPEI-12 index showed a slight downward trend,and drought and flood alternated from year to year.The annual drought mainly distributed in the northeast,west and southeast of Jiangxi Province,and most of the drought was global and regional,and the regional drought was more significant after 2000.The seasonal drought occurred in summer and autumn,especially in autumn.The drought degree in spring and winter was light and more frequent in the southern part of Ganzhou.However,after 2001,spring showed an aridity trend,and the SPEI index in summer,autumn and winter showed an upward trend,even easy to cover the province's serious autumn drought.Crop to the affected area and summer and autumn were significantly correlated with SPEI index and summer drought influence on Jiangxi crops than autumn drought.The results can provide reference for drought control and drought resistance in Jiangxi Province.
作者
刘业伟
许小华
张秀平
周信文
雷声
韩会明
LIU Ye-wei;XU Xiao-hua;ZHANG Xiu-ping;ZHOU Xin-wen;LEI Sheng;HAN Hui-ming(Jiangxi Academy of Water Sciences and Engineering,Nanchang 330029,China;Jiangxi Provincial Eco-hydraulic Technology Innovation Center of Poyang Lake Basin,Nanchang 330029,China)
出处
《水电能源科学》
北大核心
2023年第4期17-21,共5页
Water Resources and Power
基金
江西省水利科技项目(202023ZDKT10,202022YBKT05,202324YBKT01)
江西省技术创新引导类计划(“科技+水利”联合计划)项目(2022KSG01002)。
