Geochronology of recent lake sediments from Longgan Lake, middle reach of the Yangtze River, influenced by disturbance of human activities
文献类型：期刊论文
| 作者 | Wu YanHong1,2 ; Liu EnFeng1; Bing HaiJian1,3; Yang XiangDong1; Xue Bin1; Xia WeiLan1
|
| 刊名 | SCIENCE CHINA-EARTH SCIENCES
 |
| 出版日期 | 2010-08-01 |
| 卷号 | 53期号:8页码:1188-1194 |
| 关键词 | (210)Pb geochronology environmental index human activity Longgan Lake |
| ISSN号 | 1674-7313 |
| 通讯作者 | Wu, YH（吴艳宏） |
| 英文摘要 | The 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Geosciences, Multidisciplinary |
| 研究领域[WOS] | Geology |
| 关键词[WOS] | PB-210 ; CS-137 ; CHINA ; CATCHMENT ; RESPONSES ; TAIBAI ; FLUX |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000280642300011 |
| 公开日期 | 2013-07-05 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/5592]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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