典型文献
Geochemistry of Sediments from a Subalpine Lake Sedimentary Succes-sion in the Western Nanling Mountains,Southern China:Implications for Catchment Weathering During the Last 15 400 Years
文献摘要：
In the present work,15 400 yr old geochemical records of a core from the subalpine Daping swamp are presented with the aim to examine the relationship between the chemical weathering and the climatic changes in the region of the western Nanling Moun-tains,China.The climate of the study region was deeply controlled by the East Asian summer monsoon.The results indicate that,in the past 15 400 yrs,the values of chemical index of alteration(CIA)ranged from 73.9％to 88.2％(mean:85.3％),suggested a medium and high intensity of chemical weathering.The local exogenous clastic materials,which were derived from the weathered residues,played a key role in contributing towards the sediments.Since the climate-induced chemical weathering exerted strong influences on the geo-chemical features of weathered residues,the geochemical characteristics of the sediments were deeply impacted by climatic conditions.Wetter and warmer conditions would favor increased chemical weathering,resulting in more leaching of soluble and mobile elements(e.g.,Ba and Sr)and leaving the resistant and immobile elements(e.g.,Al and Ti)enriched in the weathered residues.These materials were then eroded and transported into the lake,and led to the sediments characterized by the characteristic of having depleted soluble elements.In contrast,dry and cold conditions would result in an opposite trend.In this sense,the geochemical records can serve as prox-ies to indicate changes of chemical weathering intensity,which were closely related to the evolution of summer monsoon.
文献关键词：
中图分类号：
作者姓名：
WANG Bingxiang;ZHONG Wei;ZHU Chan;OUYANG Jun;WEI Zhiqiang;SHANG Shengtan
作者机构：
School of Geography Sciences,South China Normal University,Guangzhou 510631,China;Guangdong Center for Marine Devel-opment Research,Guangzhou 510220,China;Zhuhai Branch of State Key Laboratory of Earth Surface Processes and Resource Eco-logy,Faculty of Geographical Science,Beijing Normal University,Zhuhai,Guangdong 519087,China;School of Earth Science and Engineering,Sun Yat-sen University,Zhuhai 519082,China
文献出处：
引用格式：
[1]WANG Bingxiang;ZHONG Wei;ZHU Chan;OUYANG Jun;WEI Zhiqiang;SHANG Shengtan-.Geochemistry of Sediments from a Subalpine Lake Sedimentary Succes-sion in the Western Nanling Mountains,Southern China:Implications for Catchment Weathering During the Last 15 400 Years)[J].中国地理科学（英文版）,2022(03):537-548
A类：
Succes,Daping,Moun,yrs,Wetter
B类：
Geochemistry,Sediments,from,Subalpine,Lake,Sedimentary,sion,Nanling,Mountains,Southern,China,Implications,Catchment,Weathering,During,Last,Years,In,work,geochemical,records,core,subalpine,swamp,are,presented,aim,examine,relationship,between,weathering,climatic,changes,region,western,climate,study,was,deeply,controlled,by,East,Asian,summer,monsoon,results,indicate,that,past,values,alteration,CIA,ranged,mean,suggested,medium,high,intensity,local,exogenous,clastic,materials,which,were,derived,weathered,residues,played,key,role,contributing,towards,sediments,Since,induced,exerted,strong,influences,features,characteristics,impacted,conditions,warmer,would,favor,increased,resulting,more,leaching,soluble,elements,Ba,Sr,leaving,resistant,immobile,Ti,enriched,These,then,eroded,transported,into,lake,characterized,having,depleted,contrast,dry,cold,opposite,trend,this,sense,can,serve,prox,ies,closely,related,evolution
AB值：
0.556426
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