Holocene precipitationδ^18O as an indicator of temperature history in arid central Asia:an overview of recent advances  

作　　者：ZhiGuo Rao YiPing Tian YunXia Li HaiChun Guo XinZhu Zhang Guang Han XinPing Zhang 

机构地区：[1]College of Resources and Environmental Sciences,Hunan Normal University,Changsha,Hunan 410081,China

出　　处：《Research in Cold and Arid Regions》2020年第6期371-379,共9页寒旱区科学（英文版）

基　　金：We dedicate this paper to the memory of Prof.ZiChu Xie,who passed away in early 2020.Prof.ZiChu Xie was an inspirational mentor and friend.This work was supported by the National Science Foundation of China(41772373,41372181);the Hunan Provincial Natural Science foundation of China(2018JJ1017);the National Key R&D Program of China(2018YFA0606404);and the Construction Program for First-Class Disciplines(Geography)of Hunan Province,China(5010002).We thank Dr.Jan Bloemendal for improving the English language.

摘　　要：Holoceneδ^18O records from various archives(ice cores,cave stalagmites,and peat sediments)from the Xinjiang region of northwestern China,in arid central Asia(ACA),are all derived ultimately from local precipitationδ^18O(δ^18Op).Nevertheless,they have been proposed as indicators of different climatic parameters,such as wetness and temperature changes.This article summarizes previously reported records of moisture sources for the Xinjiang region and the results of modern observations conducted at an ice core site and a peat site in the Altai Mountains.The findings are used to propose that the overall positive trends in Holoceneδ^18O records from the various archives from the Xinjiang region primarily reflect the Holocene's long-term warming trend.It is concluded that more site-specific modern observations are needed to further elucidate the environmental significance of Holoceneδ^18O records from this region,especially for the separation of different seasonal temperature signals present withinδ^18O records.

关 键 词：arid central Asia precipitationδ^18O Holocene temperature history ice core STALAGMITE peat 

分 类 号：P532[天文地球—古生物学与地层学] P534.632[天文地球—地质学]