人民珠江2025，Vol.46Issue(6)：31-41,11.DOI:10.3969/j.issn.1001-9235.2025.06.004
闽江流域土壤湿度及其记忆性的时空特征与趋势分析
Spatiotemporal Characteristics and Trend Analysis of Soil Moisture and Its Memory Effect in the Minjiang River Basin
摘要
Abstract
This study investigated the spatiotemporal differentiation characteristics of soil moisture and its memory effect in the Minjiang River Basin,aiming to provide a scientific basis for water resources management,as well as flood prevention and disaster reduction in humid regions.Based on a 1 km grid daily-scale soil moisture dataset(2000-2022),regression fitting and autocorrelation coefficient methods were applied to systematically analyze the spatial gradient,interannual variation,seasonal dynamics,and memory effects of soil moisture in the basin.Soil moisture in the Minjiang River Basin exhibits a significant northwest-southeast decreasing trend,with high-value zones(>0.43 m3/m3)concentrated in the Wuyi Mountain Forest Ecological Zone and low-value zones(<0.39 m3/m3)distributed along the coastal urbanized plains.Seasonal dynamics reveal a spring peak(0.44 m3/m3)and a decline to 0.39 m3/m3 in autumn.The memory effects of soil moisture at different depths show spatial differentiation characteristics,and the memory time of deep soil in the lower reaches of the Minjiang River is lower than 30 days.The soil moisture in the Minjiang River Basin shows spatiotemporal differentiation.The memory effects demonstrate depth-space heterogeneity,reflecting the synergistic regulatory effects of factors such as precipitation,temperature,and vegetation coverage.The findings enhance the understanding of soil moisture and provide implications for flood warning and water resource management in the Minjiang River Basin.关键词
土壤湿度/土壤湿度记忆性/时空分异/变化趋势/闽江流域Key words
soil moisture/soil moisture memory/spatiotemporal differentiation/variation trend/Minjiang River Basin分类
水利科学引用本文复制引用
殷方旭,游介文,张茵驰,吴静雯,高路..闽江流域土壤湿度及其记忆性的时空特征与趋势分析[J].人民珠江,2025,46(6):31-41,11.基金项目
国家自然科学基金项目(42271030) （42271030）
福建省科技厅杰出青年科学基金项目(2022J06018) （2022J06018）
福建省自然科学基金(2023J011334) （2023J011334）
福建省"雏鹰计划"青年拔尖人才计划 （）
