科技创新与应用2025，Vol.15Issue(30)：77-80,85,5.DOI:10.19981/j.CN23-1581/G3.2025.30.019
基于SPEI的三江平原作物生长季干旱时空特征分析
摘要
Abstract
In order to deeply explore the temporal and spatial characteristics of drought in the Sanjiang Plain crop growing season(May to September),the study was based on the grid meteorological data of the Sanjiang Plain,used the Penman-Monteith formula to calculate potential evapotranspiration,and then calculated the Standardized Precipitation Evapotranspiration Index(SPEI),and based on indicators such as drought frequency,range,duration and intensity,the drought evolution laws in the study area were revealed.The results show that the interannual SPEI generally shows an upward trend(0.011/a),and the climate tends to become humid.2014 is a sudden change year in the Sanjiang Plain from drought to humidity;drought occurs most frequently in August,and July is a period of high incidence of severe drought.The spatial distribution of drought frequency on an annual scale shows a pattern of"high in the middle,low in the north and south".The duration and severity of drought in the Shuangyashan and Jixi areas are higher than those in the northwest.关键词
三江平原/作物生长季/气象干旱/标准化降水蒸散指数/时空特征Key words
Sanjiang Plain/crop growing season/meteorological drought/standardized precipitation evapotranspiration index/spatio-temporal characteristics分类
大气科学引用本文复制引用
齐新虎,陈末..基于SPEI的三江平原作物生长季干旱时空特征分析[J].科技创新与应用,2025,15(30):77-80,85,5.基金项目
黑龙江省生态环境保护科研项目(HST2024TR007) （HST2024TR007）
