Long-term reconstruction of flash floods in the Qilian Mountains,China,based on dendrogeomorphic methods

作     者：QIE Jia-zhi ZHANG Yong TRAPPMANN Daniel ZHONG Yi-hua BALLESTEROS-CÁNOVAS Juan Antonio FAVILLIER Adrien STOFFEL Markus QIE Jia-zhi;ZHANG Yong;TRAPPMANN Daniel;ZHONG Yi-hua;BALLESTEROS-CáNOVAS Juan Antonio;FAVILLIER Adrien;STOFFEL Markus

作者机构：Key Laboratory of Land Surface Pattern and SimulationInstitute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China Climate Change Impacts and Risks in the Anthropocene(C-CIA)Institute for Environmental SciencesUniversity of GenevaGeneva CH-1205Switzerland Dendrolab.chDepartment of Earth SciencesUniversity of GenevaGeneva CH-1205Switzerland National Museum of Natural SciencesMNCN-CSICC/Serrano 115bis28006MadridSpain Department F.-A.Forel for Environmental and Aquatic SciencesUniversity of GenevaGeneva CH-1205Switzerland 

出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)

年 卷 期：2022年第19卷第11期

页      面：3163-3177页

核心收录：

学科分类：081504[工学-水利水电工程] 08[工学] 0815[工学-水利工程] 

基　　金：supported by the National Natural Science Foundation of China[Grant No.41977392] the National Key R&D Program of China[Grant No.2019YFA0606602] the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA20090000) Qilian Mountain National Park Qinghai Province management bureau financed by the China Scholarship Council 

主　　题：Tree ring Dendrogeomorphology Flash floods Qinghai spruce Qilian Mountains 

摘      要：In China,flash floods are one of the main natural disasters causing loss of life and damage to *** threat of flash floods is exacerbated with climate change and increased human activities,such that the number of disasters has shown a clear upward trend in recent ***,due to the scarcity of instrumental data or overly short timeseries,we are still lacking critical data to understand spatio-temporal patterns and driving factors of extreme flash *** missing knowledge is however crucial for a proper management of these hazards,especially in remote mountain *** forested catchments,dendrogeomorphology allows the reconstruction of past process activity based on growth disturbances(GDs)in trees that have been affected by past flash ***,in our study,for the first time,we reconstruct past flash floods in the Qilian Mountains,northeast Tibetan Plateau,over past *** this end,we sampled 99 Qinghai spruce(Picea crassifolia)trees affected by flash floods,with a total of 194increment cores,and identified 302 GDs induced by past flash *** GDs have been caused by at least 21 flash floods that we are able to reconstruct over the last 170 *** position of GDs within tree rings and the intra-seasonal dating of past events also allowed discussion of the likely synoptic situations that may have led to the triggering of flash floods in the *** regression analysis confirms that significant correlation exists between cumulative maximum 5-day August-September precipitation and reconstructed flash floods,which is corresponding to the majority of scars and related tangential rows of traumatic resin ducts(TRDs)found in the latewood portion of growth *** results support the idea that abundant precipitation occurring at the end of the summer season and early fall is the key factor driving flash floods in our study *** research not only fills the gaps regarding historical flash flood histories in