水科学进展2023，Vol.34Issue(5)：731-743,13.DOI:10.14042/j.cnki.32.1309.2023.05.008
黄丘区自然植被对暴雨的拦蓄作用
Interception and storage of heavy rainfall by natural vegetations in the loess hilly and gully area
摘要
Abstract
Vegetative trapping of heavy rainfall is an important mechanism for mitigating frequent rain-induced flood disasters in the context of global warming.To investigate the role of natural vegetation in trapping heavy rainfall following the widespread implementation of the"the Grain for Green"project in the Loess Hilly and Gully area,an automatic soil moisture monitoring system was employed to continuously monitor the soil moisture content in the top 10 m on one shrub-covered slope and three herbaceous slopes during six heavy rainfall events occurring in the Fangta watershed of the Ansai District,Shaanxi Province,from 2019 to 2022.The results showed that the maximum infiltration depth of the herbaceous slopes was approximately 200 cm during the heavy rainfall events,while for the shrub-covered slope,it was only 100 cm.Furthermore,the shrub-covered slope exhibited superior rainfall interception compared to the herbaceous slopes.The trapping efficianncy of the herbaceous slopes improved with each successive year of"Grain for Green"project implementation.Additionally,natural shrub-covered slopes displayed a trapping efficiency of up to 60.8%during low-intensity,short-duration rainfall events,and 40.8%during high-intensity,long-duration rainfall events.Therefore,it is advisable to strategically conserve and allocate shrub-herbaceous ecosystems within the Loess Hilly and Gully area to enhance the storage and mitigation capacity of vegetation and soil in response to heavy rainfall.关键词
暴雨事件/灌草植被/拦蓄作用/土壤入渗/黄丘区Key words
heavy rainfall event/scrub and herbaceous/heavy rainfall interception and storage/soil infiltration/the loess hilly and gully area分类
农业科技引用本文复制引用
赵文婷,姜晓晗,李萌萌,焦菊英,严晰芹,祁泓锟..黄丘区自然植被对暴雨的拦蓄作用[J].水科学进展,2023,34(5):731-743,13.基金项目
国家自然科学基金资助项目(U2243213 （）
42077078)The study is financially supported by the National Natural Science Foundation of China(No.U2243213 （）
No.42077078). （）
