水资源与水工程学报2025，Vol.36Issue(2)：200-206,217,8.DOI:10.11705/j.issn.1672-643X.2025.02.23
气候变化下宁夏中南部马铃薯不同生育期干旱特征及驱动因素分析
Drought characteristics and driving factors in different growth stages of potatoes under climate change in central and southern Ningxia
摘要
Abstract
Drought is the main meteorological disaster affecting the potato industry in central and southern Ningxia;however,the spatiotemporal characteristics and driving factors of drought in different growth sta-ges of potatoes in Ningxia under climate change have not yet been revealed.Based on the data from eight meteorological stations in central and southern Ningxia from 1991 to 2020,we investigated the temporal characteristics of meteorological elements and drought intensity in different growth stages of potatoes,u-sing crop water efficiency index(CWDI)and Mann-Kendall test.Geographic information system(GIS)was employed to analyze the spatial distribution of drought levels and frequencies,and path analysis was used to identify the main driving factors.The results showed that for most stations,precipitation and crop water demand significantly decreased during the flowering-harvesting period,so did the wind speed throughout the entire growth period.The drought intensity in different growth stages was in the following order:branching-flowering period>flowering-harvesting period>germination-branching period.The average drought intensity in the 2010s has decreased compared with the 1990s and 2000s.Whereas the drought frequency was branching-flowering period(76%-100%)>flowering-harvesting period(48%-94%)>germination-branching period(26%-74%).Spatially,the level and frequency of drought decreased from north to south,with the highest level and frequency in Tongxin Station,and low-est in Jingyuan Station.The influence of driving factors on the germination-branching period and branching-flowering period showed precipitation>crop water demand>average temperature>sunshine hours>relative humidity>average wind speed;but precipitation>crop water demand>average tempera-ture>relative humidity>average wind speed on the flowering-harvesting period.关键词
马铃薯/作物水分亏缺指数/通径分析/农业干旱/气候变化/宁夏中南部Key words
potato/crop water deficit index/path analysis/agricultural drought/climate change/cen-tral and southern Ningxia分类
农业科技引用本文复制引用
叶平,梁生蕃,朱永宁,李福生,葛静,冯东溥..气候变化下宁夏中南部马铃薯不同生育期干旱特征及驱动因素分析[J].水资源与水工程学报,2025,36(2):200-206,217,8.基金项目
国家自然科学基金项目(42365010) （42365010）
彭阳县科技研发项目(2023PKJ0034) （2023PKJ0034）
宁夏回族自治区重点研发计划项目(2023BCF01054) （2023BCF01054）
