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| Lake sediment records on climate change and human activities since the Holocene in Erhai catchment, Yunnan Province, China | |
| 作者姓名： | R. Matsumoto |
| 作者单位： | Geology Institute，Tokyo University Tokyo 113，Japan |
| 摘 要： | Climate of Yunnan Plateau is mainly controlledby the system of southwest Asian monsoon, and alsoaffected by westerlies and local climate of the Qing-hai-Tibet Plateau. Since the Cenozoic, a large numberof structural lake basins have formed with the uplift ofthe Qinghai-Tibet Plateau1]. As the information aboutthe climate and environment change was faithfullydocumented in lake sediments, which have the char-acteristics of continuity, high resolution, abundant in-formation, lake sediments p… |
| 收稿时间： | 9 April 2003 |
Lake sediment records on climate change and human activities since the Holocene in Erhai catchment,Yunnan Province,China |
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| R. Matsumoto.Lake sediment records on climate change and human activities since the Holocene in Erhai catchment, Yunnan Province, China[J].Science in China(Earth Sciences),2005,48(3):353-363. | |
| Authors: | |
| Institution: | 1. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China 2. Geology Institute, Tokyo University, Tokyo 113, Japan 3. Institute of Hydrological and Environmental Geology, Chinese Academy of Geological Sciences, Zhengding 050803, China 4. Department of Urban and Resource Science, Nanjing University, Nanjing 210093, China |
| Abstract: | According to high-resolution analyses on multi-proxy of sediment core from the Er- hai Lake, Yunnan Province, the sequence of climatic and environmental change since the Holo- cene has been reconstructed based on accurate dating. The results show that climate had tran- sited from cold-wet to warm-wet during ca. 12950-8399 aBP in this area, and the transition happened in ca. 10329 aBP. Due to the enhancing southwest Asian monsoon and increasing precipitation, the lake-level of the Erhai Lake began to rise after ca. 10329 a BP. Climate in the catchment was warm and wet during the mid-Holocene, and the warmest stage appeared in ca. 8399-6371 a BP. The lake-level descended in the mid-Holocene because of the decrease of effective moisture in the basin. Human activities appeared in ca. 6371 a BP, and the initial man- ner mainly focused on deforestation. Up to ca. 2139 a BP, due to the amount of immigration into this area, the cultivation was developed widely, which was followed by mining (coal mine). |
| Keywords: | climate change human activity Holocene lake sediment Erhai Lake in Yunnan Province |
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