A multiple-proxy stalagmite record reveals historical deforestation in central Shandong, northern China  

作　　者：Liangcheng TAN Wen LIU Tianli WANG Peng CHENG Jingjie ZANG Xiqian WANG Le MA Dong LI Jianghu LAN R.Lawrence EDWARDS Hai CHENG Hai XU Li AI Yongli GAO Yanjun CAI 

机构地区：[1]State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi’an 710061,China [2]Center for Excellence in Quaternary Science and Global Change,Chinese Academy of Sciences,Xi’an 710061,China [3]Institute of Global Environmental Change,Xi’an Jiaotong University,Xi’an 710049,China [4]Open Studio for Oceanic-Continental Climate and Environment Changes,Pilot National Laboratory for Marine Science and Technology,Qingdao 266061,China [5]801 Institute of Hydrogeology and Engineering Geology,Shandong Provincial Bureau of Geology&Mineral Resources,Jinan 250014,China [6]Shandong Provincial Geo-mineral Engineering Exploration Institute,Jinan 250014,China[7]Shandong Engineering Research Center for Environmental Protection and Remediation on Groundwater,Jinan 250014,China [8]Library of Chang’an University,Xi’an 710064,China [9]Department of Earth Sciences,University of Minnesota,Minneapolis MN 55455,USA [10]School of Geography,Nanjing Normal University,Nanjing 210097,China [11]Institute of Surface-Earth System Science,Tianjin University,Tianjin 300072,China [12]Department of Geological Sciences,University of Texas at San Antonio,San Antonio TX 78249,USA

出　　处：《Science China Earth Sciences》2020年第10期1622-1632,共11页中国科学（地球科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.41991252);the Strategic Priority Research Program(Grant No.XDB40000000);the International Partnership Program(Grant No.132B61KYSB20170005)of Chinese Academy of Sciences;the National Natural Science Foundation of China(Grant No.41888101);partly supported by the USA National Science Foundation(Grant Nos.0908792,1211299&1702816 to R.Lawrence EDWARDS and Hai CHENG);the 111 Program of China(Grant No.D19002);the Belt&Road Center for Climate and Environment Studies of IEECAS。

摘　　要：Evaluating anthropogenic impacts on regional vegetation changes during historical time is not only important for a better understanding of the Anthropocene but also valuable in improving the vegetation-climate models.In this study,we analyzed stable isotopes(δ^18O,δ^13C)and trace elements(Mg/Ca,Sr/Ca)of a stalagmite from Huangchao Cave in central Shandong,northern China.230Th and AMS14C dating results indicate the stalagmite deposited during 174BC and AD1810,with a hiatus between AD638 and 1102.Broad similarities of theδ^18O and trace elements in the stalagmite suggest they are reliable precipitation indexes.Theδ^13C of the stalagmite,a proxy of vegetation change,was generally consistent with local precipitation and temperature variations on a centennial-scale before the 15th century.It typically varied from–9.6‰to–6.3‰,indicating climate controlled C3 type vegetation during this period.However,a persistent and marked increasing trend in theδ^13C record was observed since the 15th century,resulting inδ^13C values from–7.7‰to–1.6‰in the next four centuries.This unprecedentedδ^13C change caused by vegetation deterioration cannot be explained by climate change but is fairly consistent with the dramatically increasing population and farmland in Shandong.We suggest that the increasing deforestation and reclamation in central Shandong began to affect vegetation in the mountain region of central Shandong since the 15th century and severely destroyed or even cleared the forest during the 16th–18th century.

关 键 词：SPELEOTHEM Stable isotopes Trace elements DEFORESTATION Human activity 16th century 

分 类 号：Q948[生物学—植物学]