Moisture changes over the past 467 years in the central Hexi Corridor, northwestern China,Dendrochronologia

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Moisture changes over the past 467 years in the central Hexi Corridor, northwestern China
Dendrochronologia ( IF 2.7 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.dendro.2020.125725
Jiazhi Qie , Qinhua Tian , Yong Zhang

Abstract The long-term characteristics of precipitation in arid and semi-arid areas are of great interest because these areas are very sensitive to climate change and human activities. The Hexi Corridor is an arid and semi-arid region in northwestern China that also is an important sector of the Silk Road Economic Belt; despite the region’s dependence on precipitation, annually resolved, long-term moisture records are still lacking for this region. Here, a standard tree-ring width chronology spanning 1484–2015 AD is developed for the Hexi Corridor using Qilian juniper (S. przewalskii Kom.). The chronology is used to reconstruct moisture changes in the region over the past 467 years. Correlation analyses indicate that the tree-ring width index has a significant positive correlation with the June SPEI (standardized precipitation evapotranspiration index) on a twelve-month time scale (r=0.73, n=65, p

更新日期：2020-10-01

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