Interactions between climate change and early agriculture in SW China and their effect on lake ecosystem functioning at centennial timescales over the last 2000 years
文献类型：期刊论文
| 作者 | Wang, Qian; Anderson, N. John; Yang, Xiangdong; Xu, Min |
| 刊名 | QUATERNARY SCIENCE REVIEWS
 |
| 出版日期 | 2020 |
| 卷号 | 233 |
| 英文摘要 | The responses of alpine lake ecosystems to combined climate and human impacts are ecologically important to understand. It is necessary to differentiate natural, climate-forced ecosystem changes from those driven by human disturbance with a long-term (i.e. 10(2)-10(3-)yr) perspective. Here a(14)C, Pb-210 and 137Cs- dated sediment core covering approximately 2500 years was analyzed for diatoms, pigments, cladocerans and geochemistry in Lugu lake-catchment in southwest China to examine the response of the lake to climate change and human impacts. Between 1000 and 1300 AD, a warming climate coupled with declining summer monsoon precipitation resulted in the increase of oligotrophic taxa and low catchment runoff. Prior to 1300 AD the lake ecosystem was primarily responding to natural, regional climate-related processes. After 1300 AD, the clear ecological shifts and reorganizations in community structure across multiple trophic levels suggest that major transitions took place in the Lugu ecosystem. An increase in Poaceae (grass) pollen from 1300 AD indicates human settlement in the area, and is followed by rapid decline in Tsuga, most likely a consequence of logging. Use of change point analyses of the multi-proxy data demonstrate that the lake ecosystem has been highly variable since 1300 AD and exhibiting enhanced vulnerability to both natural and anthropogenic disturbance. Our results suggest that agriculture-climate interactions played a major role in the ecological transitions over the last similar to 700 years. This conclusion provides insight into how the anthropogenic land-use intensity, vegetation cover and surface erosion fluctuated with natural temperature and precipitation change over the past 2000 years. (C) 2020 Elsevier Ltd. All rights reserved. |
| 源URL | [http://159.226.73.51/handle/332005/19892]  |
| 专题 | 中国科学院南京地理与湖泊研究所 |
| 推荐引用方式 GB/T 7714 | Wang, Qian,Anderson, N. John,Yang, Xiangdong,et al. Interactions between climate change and early agriculture in SW China and their effect on lake ecosystem functioning at centennial timescales over the last 2000 years[J]. QUATERNARY SCIENCE REVIEWS,2020,233. |
| APA | Wang, Qian,Anderson, N. John,Yang, Xiangdong,&Xu, Min.(2020).Interactions between climate change and early agriculture in SW China and their effect on lake ecosystem functioning at centennial timescales over the last 2000 years.QUATERNARY SCIENCE REVIEWS,233. |
| MLA | Wang, Qian,et al."Interactions between climate change and early agriculture in SW China and their effect on lake ecosystem functioning at centennial timescales over the last 2000 years".QUATERNARY SCIENCE REVIEWS 233(2020). |
入库方式： OAI收割
来源：南京地理与湖泊研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。