水资源与水工程学报2025，Vol.36Issue(2)：191-199,9.DOI:10.11705/j.issn.1672-643X.2025.02.22
淮北平原复合农业干旱和高温事件的特征变化
Characteristic changes of compound agricultural droughts and heat events in Huaibei Plain:A case study of the Bengbu Station
摘要
Abstract
Precise water resources allocation and field management strategies addressing compound agri-cultural droughts and heat events(CADHEs)are essential for crop growth in Huaibei Plain.This study aims to explore the characteristic trends and underlying driving factors of CADHEs during the heading-to-filling and filling-to-maturity stages of winter wheat,as well as the entire growth period of summer maize in the study area.Standardized temperature and soil moisture indices were used to identify CADHEs,based on the daily mean temperature and 0-100 cm soil moisture data from the Wudaogou Hydrological Experimental Station spanning from 1986 to 2021.The characteristics and trends of CADHEs frequency,intensity,and maximum consecutive days before and after the abrupt change in temperature in 1994 were compared,and the main driving factors of CADHEs changes were identified by Copula function.The re-sults show that the highest frequency of CADHEs occurred during the filling-to-maturity stage of winter wheat and jointing-to-tasseling stage of summer maize,with maximum consecutive days of 13 and 23 d,respectively.The intensity of CADHEs during these two stages was the highest,with numerous extreme values,reaching a maximum of 5.68 and 6.00,respectively.The frequency of CADHEs lasting for a maximum of 5 consecutive days or more was extremely high and continued to increase,with maximum consecutive days of 12 and 21 d,respectively.The variation in the correlation between temperature and soil moisture played a dominant role in the increase of CADHEs,followed by temperature changes.These findings can provide a support for precise water resources allocation and effective field management strate-gies,as well as guide augmentations in irrigation schemes to address CADHEs risks.关键词
农业干旱和高温事件/标准化温度/土壤湿度/驱动因素/Copula函数/淮北平原Key words
compound agricultural droughts and heat events(CADHEs)/standardized temperature/soil moisture/driving factor/Copula function/Huaibei Plain分类
天文与地球科学引用本文复制引用
黄禹鑫,朱永华,王启猛,吕海深,陆玟,王怡宁,朱嘉琪,孙千桢..淮北平原复合农业干旱和高温事件的特征变化[J].水资源与水工程学报,2025,36(2):191-199,9.基金项目
国家自然科学基金项目(42071033、41830752、42471019) （42071033、41830752、42471019）
