Climatic implications of hydrologic changes in two lake catchments on the central Tibetan Plateau since the last glacial
文献类型：期刊论文
| 作者 | Hou, JZ (Hou, Juzhi)1; Tian, Q (Tian, Qian)1,2; Liang, J (Liang, Jie)1,2; Wang, MD (Wang, Mingda)1; He, Y (He, Yue)3; Hou, JZ |
| 刊名 | JOURNAL OF PALEOLIMNOLOGY
 |
| 出版日期 | 2017 |
| 卷号 | 58期号:2页码:257-273 |
| 关键词 | Intertropical Convergence Zone North-atlantic Climate N-alkane Distributions Asian Monsoon Leaf Wax Moisture Availability Early Holocene China Qinghai Records |
| DOI | 10.1007/s10933-017-9976-9 |
| 文献子类 | Article |
| 英文摘要 | The numerous and widespread lakes of the Tibetan Plateau (TP) constitute the largest group of alpine lakes on Earth. Some of the lakes are fed mainly by glacier meltwater and others by precipitation and groundwater. Past changes in the environments of these lakes differed because of differences in lake hydrological regimes and the complex pattern of climate change on the TP. Here we present records of scanning XRF, inorganic carbon (IC) concentration n-alkanoic acid average chain length (ACL) and percent aquatic inputs (Paq) in sediment cores from two non-glaciated lakes on the central TP (Dagze Co and Jiang Co), which span the past 19,000 years. We used these measures to investigate past changes in catchment hydrology, climate and environment. Variations in the concentration of Ti and other lithogenic elements at the two sites were influenced mainly by surface runoff, which is supported by the variation of IC, Ca/(Al, Ti, Fe) (reflecting authigenic carbonate precipitation), Rb/Sr (a chemical weathering proxy), and ACL and Paq. We attribute variations in surface runoff to changes in the precipitation/evaporation ratio, caused by the pattern of climate change on the central TP since the late Pleistocene. During the late Pleistocene, stronger runoff (indicated by higher Ti, higher Rb/Sr and Paq, lower IC, Ca/(Al, Ti, Fe) and ACL) likely resulted from lower temperatures. Lower runoff during the Holocene may reflect intensified evaporation caused by higher temperatures. Comparison with records from glaciated lakes in the region reveals opposite trends in catchment hydrology. Overall, our results suggest that since the late Pleistocene the central TP was influenced mainly by the Indian Summer Monsoon. |
| 学科主题 | 自然地理学 |
| WOS研究方向 | Environmental Sciences & Ecology; Geology; Marine & Freshwater Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000404687500010 |
| 源URL | [http://ir.itpcas.ac.cn/handle/131C11/8021]  |
| 专题 | 青藏高原研究所_图书馆 |
| 通讯作者 | Hou, JZ |
| 作者单位 | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China. 2.Univ Chinese Acad Sci, Beijing, Peoples R China. 3.Hebei GEO Univ, Shijiazhuang 050031, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Hou, JZ ,Tian, Q ,Liang, J ,et al. Climatic implications of hydrologic changes in two lake catchments on the central Tibetan Plateau since the last glacial[J]. JOURNAL OF PALEOLIMNOLOGY,2017,58(2):257-273. |
| APA | Hou, JZ ,Tian, Q ,Liang, J ,Wang, MD ,He, Y ,&Hou, JZ.(2017).Climatic implications of hydrologic changes in two lake catchments on the central Tibetan Plateau since the last glacial.JOURNAL OF PALEOLIMNOLOGY,58(2),257-273. |
| MLA | Hou, JZ ,et al."Climatic implications of hydrologic changes in two lake catchments on the central Tibetan Plateau since the last glacial".JOURNAL OF PALEOLIMNOLOGY 58.2(2017):257-273. |
入库方式： OAI收割
来源：青藏高原研究所
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