Lake sediment records on climate change and human activities in the Xingyun Lake catchment, SW China.

Sediments from Xinyun Lake in central Yunnan, southwest China, provide a record of environmental history since the Holocene. With the application of multi-proxy indicators (total organic carbon (TOC), total nitrogen (TN), δ13C and δ15N isotopes, C/N ratio, grain size, magnetic susceptibility (MS) an...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Wenxiang Zhang, Qingzhong Ming, Zhengtao Shi, Guangjie Chen, Jie Niu, Guoliang Lei, Fengqin Chang, Hucai Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c87adc94368d4efaa84674240fb0c3c4
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:c87adc94368d4efaa84674240fb0c3c4
record_format	dspace
spelling	oai:doaj.org-article:c87adc94368d4efaa84674240fb0c3c42021-11-25T06:08:05ZLake sediment records on climate change and human activities in the Xingyun Lake catchment, SW China.1932-620310.1371/journal.pone.0102167https://doaj.org/article/c87adc94368d4efaa84674240fb0c3c42014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/25033404/?tool=EBIhttps://doaj.org/toc/1932-6203Sediments from Xinyun Lake in central Yunnan, southwest China, provide a record of environmental history since the Holocene. With the application of multi-proxy indicators (total organic carbon (TOC), total nitrogen (TN), δ13C and δ15N isotopes, C/N ratio, grain size, magnetic susceptibility (MS) and CaCO3 content), as well as accelerator mass spectrometry (AMS) 14C datings, four major climatic stages during the Holocene have been identified in Xingyun's catchment. A marked increase in lacustrine palaeoproductivity occurred from 11.06 to 9.98 cal. ka BP, which likely resulted from an enhanced Asian southwest monsoon and warm-humid climate. Between 9.98 and 5.93 cal. ka BP, a gradually increased lake level might have reached the optimum water depth, causing a marked decline in coverage by aquatic plants and lake productivity of the lake. This was caused by strong Asian southwest monsoon, and coincided with the global Holocene Optimum. During the period of 5.60-1.35 cal. ka BP, it resulted in a warm and dry climate at this stage, which is comparable to the aridification of India during the mid- and late Holocene. The intensifying human activity and land-use in the lake catchment since the early Tang Dynasty (∼1.35 cal. ka BP) were associated with the ancient Dian culture within Xingyun's catchment. The extensive deforestation and development of agriculture in the lake catchment caused heavy soil loss. Our study clearly shows that long-term human activities and land-use change have strongly impacted the evolution of the lake environment and therefore modulated the sediment records of the regional climate in central Yunnan for more than one thousand years.Wenxiang ZhangQingzhong MingZhengtao ShiGuangjie ChenJie NiuGuoliang LeiFengqin ChangHucai ZhangPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 7, p e102167 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Wenxiang Zhang Qingzhong Ming Zhengtao Shi Guangjie Chen Jie Niu Guoliang Lei Fengqin Chang Hucai Zhang Lake sediment records on climate change and human activities in the Xingyun Lake catchment, SW China.
description	Sediments from Xinyun Lake in central Yunnan, southwest China, provide a record of environmental history since the Holocene. With the application of multi-proxy indicators (total organic carbon (TOC), total nitrogen (TN), δ13C and δ15N isotopes, C/N ratio, grain size, magnetic susceptibility (MS) and CaCO3 content), as well as accelerator mass spectrometry (AMS) 14C datings, four major climatic stages during the Holocene have been identified in Xingyun's catchment. A marked increase in lacustrine palaeoproductivity occurred from 11.06 to 9.98 cal. ka BP, which likely resulted from an enhanced Asian southwest monsoon and warm-humid climate. Between 9.98 and 5.93 cal. ka BP, a gradually increased lake level might have reached the optimum water depth, causing a marked decline in coverage by aquatic plants and lake productivity of the lake. This was caused by strong Asian southwest monsoon, and coincided with the global Holocene Optimum. During the period of 5.60-1.35 cal. ka BP, it resulted in a warm and dry climate at this stage, which is comparable to the aridification of India during the mid- and late Holocene. The intensifying human activity and land-use in the lake catchment since the early Tang Dynasty (∼1.35 cal. ka BP) were associated with the ancient Dian culture within Xingyun's catchment. The extensive deforestation and development of agriculture in the lake catchment caused heavy soil loss. Our study clearly shows that long-term human activities and land-use change have strongly impacted the evolution of the lake environment and therefore modulated the sediment records of the regional climate in central Yunnan for more than one thousand years.
format	article
author	Wenxiang Zhang Qingzhong Ming Zhengtao Shi Guangjie Chen Jie Niu Guoliang Lei Fengqin Chang Hucai Zhang
author_facet	Wenxiang Zhang Qingzhong Ming Zhengtao Shi Guangjie Chen Jie Niu Guoliang Lei Fengqin Chang Hucai Zhang
author_sort	Wenxiang Zhang
title	Lake sediment records on climate change and human activities in the Xingyun Lake catchment, SW China.
title_short	Lake sediment records on climate change and human activities in the Xingyun Lake catchment, SW China.
title_full	Lake sediment records on climate change and human activities in the Xingyun Lake catchment, SW China.
title_fullStr	Lake sediment records on climate change and human activities in the Xingyun Lake catchment, SW China.
title_full_unstemmed	Lake sediment records on climate change and human activities in the Xingyun Lake catchment, SW China.
title_sort	lake sediment records on climate change and human activities in the xingyun lake catchment, sw china.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/c87adc94368d4efaa84674240fb0c3c4
work_keys_str_mv	AT wenxiangzhang lakesedimentrecordsonclimatechangeandhumanactivitiesinthexingyunlakecatchmentswchina AT qingzhongming lakesedimentrecordsonclimatechangeandhumanactivitiesinthexingyunlakecatchmentswchina AT zhengtaoshi lakesedimentrecordsonclimatechangeandhumanactivitiesinthexingyunlakecatchmentswchina AT guangjiechen lakesedimentrecordsonclimatechangeandhumanactivitiesinthexingyunlakecatchmentswchina AT jieniu lakesedimentrecordsonclimatechangeandhumanactivitiesinthexingyunlakecatchmentswchina AT guolianglei lakesedimentrecordsonclimatechangeandhumanactivitiesinthexingyunlakecatchmentswchina AT fengqinchang lakesedimentrecordsonclimatechangeandhumanactivitiesinthexingyunlakecatchmentswchina AT hucaizhang lakesedimentrecordsonclimatechangeandhumanactivitiesinthexingyunlakecatchmentswchina
_version_	1718414189870972928

Lake sediment records on climate change and human activities in the Xingyun Lake catchment, SW China.

Ejemplares similares