Rainfall erosivity estimation over the Tibetan plateau based on high spatial-temporal resolution rainfall records
作者机构：State Key Laboratory of Severe WeatherChinese Academy of Meteorological SciencesBeijingChina Institute of International Rivers and Eco-securityYunnan UniversityKunmingChina CMA Earth System Modeling and Prediction CentreBeijingChina
出 版 物：《International Soil and Water Conservation Research》 (国际水土保持研究（英文）)
年 卷 期：2022年第10卷第3期
页 面：422-432页
核心收录：
学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学]
基 金：This research was jointly supported by the Second Tibetan Plateau Scientific Expedition and Research Program(Grant No.2019QZKK0307) the Strategic Priority Research Programof Chinese Academy of Sciences(Grant No.XDA20100300) the National Science Foundation for Young Scientists of China(Grant No.41905048) the Basic Research Special Project of the Chinese Academy of Meteorological Sciences(Grant No.2019Z008)
主 题：Erosive rain Rainfall erosivity Spatial-temporal patterns 1-Min precipitation data Tibetan Plateau
摘 要：The Tibetan Plateau(TP)in China has been experiencing severe water erosion because of climate *** rapid development of weather station network provides an opportunity to improve our understanding of rainfall erosivity in the *** this study,1-min precipitation data obtained from 1226 weather stations during 2018–2019 were used to estimate rainfall erosivity,and subsequently the spatial-temporal patterns of rainfall erosivity in the TP were *** mean annual erosive rainfall was 295 mm,which accounted for 53%of the annual *** average of 14 erosive events occurred yearly per weather station,with the erosive events in the wet season being more likely to extend beyond *** these cases,the precipitation amounts of the erosive events were found to be higher than those of the daily precipitations,which may result in implicit bias as the daily precipitation data were used for estimating the rainfall *** mean annual rainfall erosivity in the TP was 528 MJ mm·ha^(-1)·h^(-1),with a broader range of 0–3402 MJ mm·ha^(-1)·h^(-1),indicating a significant spatial *** with the highest mean annual rainfall erosivity were located in the forest zones,followed by steppe and desert ***,the precipitation phase records obtained from 140 weather stations showed that snowfall events slightly impacted the accuracy of rainfall erosivity calculation,but attention should be paid to the erosion process of snowmelt in the inner part of the *** results can be used as the reference data for soil erosion prediction in normal precipitation years.
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