IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Geochronology of recent lake sediments from Longgan Lake, middle reach of the Yangtze River, influenced by disturbance of human activities
Wu YanHong1,2; Liu EnFeng1; Bing HaiJian1,3; Yang XiangDong1; Xue Bin1; Xia WeiLan1
Corresponding AuthorWu, YH(吴艳宏)
2010
Source PublicationSCIENCE CHINA-EARTH SCIENCES
ISSN1674-7313
EISSN1869-1897
Volume53Issue:8Pages:1188-1194
SubtypeArticle
AbstractThe impacts of human activities in Longgan Lake region on the distribution of (210)Pb in lake sediment made it difficult to establish geochronological sequence. However, environmental proxies recorded these human activities and could be used as time marker to check (210)Pb dating results. Based on the analysis of (210)Pb(exc) distribution in cores LS-1 and LGL-1, and in combination with the human activities records in grain-size and element concentration, the sedimentation rates in the upper layers of these two cores were determined to be 0.19 and 0.23 cm/a respectively. The MAR (mass accumulation rates) of these two cores demonstrated that natural condition, such as precipitation and runoffs, led to the variation of MAR before human disturbance, and human activities controlled the sedimentary processes afterwards, which obviously reduced the particles influx into the lakes. During 1940s when human activity had not changed the water system within the catchment, (210)Pb activity was abnormally strong in lakes along middle to lower reaches of the Yangtze River, which might be attributed to less precipitation and can be used as a time marker for geochronological research.
Keyword(210)Pb Geochronology Environmental Index Human Activity Longgan Lake
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s11430-010-3066-4
WOS Subject ExtendedGeology
Indexed BySCI
WOS KeywordPB-210 ; CS-137 ; CHINA ; CATCHMENT ; RESPONSES ; TAIBAI ; FLUX
Language英语
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000280642300011
Funding OrganizationNational Natural Science Foundation of China(40772203) ; Chinese Academy of Sciences(KZCX2-YW-319)
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5592
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Wu YanHong,Liu EnFeng,Bing HaiJian,et al. Geochronology of recent lake sediments from Longgan Lake, middle reach of the Yangtze River, influenced by disturbance of human activities[J]. SCIENCE CHINA-EARTH SCIENCES,2010,53(8):1188-1194.
APA Wu YanHong,Liu EnFeng,Bing HaiJian,Yang XiangDong,Xue Bin,&Xia WeiLan.(2010).Geochronology of recent lake sediments from Longgan Lake, middle reach of the Yangtze River, influenced by disturbance of human activities.SCIENCE CHINA-EARTH SCIENCES,53(8),1188-1194.
MLA Wu YanHong,et al."Geochronology of recent lake sediments from Longgan Lake, middle reach of the Yangtze River, influenced by disturbance of human activities".SCIENCE CHINA-EARTH SCIENCES 53.8(2010):1188-1194.
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