Global-scale altitude effect on leaf wax n-alkane δD values in terrestrial higher plants

作     者：Jinzhao LIU Zhisheng AN Jinzhao LIU;Zhisheng AN

作者机构：State Key Laboratory of Loess and Quaternary GeologyInstitute of Earth EnvironmentChinese Academy of SciencesXi'an 710061China CAS Center for Excellence in Quaternary Science and Global ChangeXi'an 710061China 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2021年第64卷第5期

页      面：825-834页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：supported by the Chinese Academy of Sciences(Grant Nos.QYZDY-SSW-DQC001,132B61KYSB20170005,ZDBS-LY-DQC033) the National Natural Science Foundation of China(Grant No.41420104008) 

主　　题：Altitude Leaf wax n-alkaneδD Global scale Paleoelevation 

摘      要：Numerous field studies have shown that leaf wax n-alkane δD values(δD_(n-alkane))can be used as a proxy for paleoelevation ***,the lack of systematic global analysis of δD_(n-alkane) values with respect to altitude limits the reliability of δD_(n-alkane )values for paleoaltimetry at the global *** this study,we analyzed the variation of δD_(n-alkane) values with altitude in terrestrial higher plants based upon our compiled globalδDn-alkane *** general decrease in δD_(n-alkane) values with altitude corresponds to the variation in precipitationδD(δD_(prec))with altitude,suggesting that the δD_(n-alkanevalues) effectively reflect δD_(prec) *** eliminating the effect of latitude at the global scale,the global δD_(n-alkane)-altitude lapse rate for all species was-1.01±0.10‰(100 m)-1,while these lapse rates were-1.03±0.13‰ and-0.47±0.13‰(100 m)^(-1) for dicots and monocots,*** study reveals that it is reliable to use δD_(n-alkanevalues) to gain information about paleoelevation at the global scale,and the global δD_(n-alkane-altitude) lapse rates provide an alternative to reconstruct paleoelevation at some δD_(n-alkane)-uninvestigated areas.