气候变化领域集成服务门户(CCPortal): Sedimentary evidence for recent eutrophication in the northern basin of Lake Taihu, China: human impacts on a large shallow lake

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DOI	10.1007/s10933-006-9058-x
	Sedimentary evidence for recent eutrophication in the northern basin of Lake Taihu, China: human impacts on a large shallow lake
	Wu Jinglu; Huang Chengmin; Zeng Haiao; Schleser, Gerhard H.; Battarbee, Rick
发表日期	2007
ISSN	0921-2728
EISSN	1573-0417
起始页码	13
结束页码	23
卷号	38 期号:1
英文摘要	Environmental change in Lake Taihu and its catchment since the early to middle part of the twentieth century has left a clear geochemical record in the lake sediments. The human activities in the lake and its catchment responsible for the change include agriculture, fisher, urbanisay tion, sewage and industrial waster disposal. Sediment cores were collected from Meilian Bay of northern Lake Taihu to investigate the record of anthropogenic impacts on the lake's ecosystem and to assess its natural, pre-eutrophication baseline state. Two marked stratigraphic sediment units were identified on the basis of total phosphorus concentration (TP), pigments, total organic carbon (TOC)/total nitrogen (TN), delta C-13 and delta N-15 corresponding to stages in the lake history dominated by phytoplankton, and by aquatic macrophytes. Results show that as TP loading increased from the early 1950s the lake produced sediments with increasing amounts of organic matter derived from phytoplankton. In the early 1950s, the first evidence for eutrophication at the Meilian Bay site is recorded by an increase in C/N values and in sediment accumulation rate, but there is little change in phosphorus concentrations, pigments, delta C-13 and delta N-15 at this time. After 1990 a more rapid increase in trophic status took place indicated by increased levels of phosphorus, pigments, delta N-15 and by decreased delta C-13 and TOC/TN values in the lake sediments. The first increase in trophic status of the early 1950s results mainly from agricultural development in the catchment. In contrast, the acceleration from ca. 1990 originates from the recent development of fisheries and the urbanisation and industrialisation of the catchment.
关键词	ORGANIC-MATTER CARBON
英文关键词	eutrophication; human impact; Lake sediment; stable isotopes; Lake Taihu; China
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Marine & Freshwater Biology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Limnology
WOS记录号	WOS:000247530100002
来源期刊	JOURNAL OF PALEOLIMNOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257515
推荐引用方式 GB/T 7714	Wu Jinglu,Huang Chengmin,Zeng Haiao,et al. Sedimentary evidence for recent eutrophication in the northern basin of Lake Taihu, China: human impacts on a large shallow lake[J]. 中国科学院青藏高原研究所,2007,38(1).
APA	Wu Jinglu,Huang Chengmin,Zeng Haiao,Schleser, Gerhard H.,&Battarbee, Rick.(2007).Sedimentary evidence for recent eutrophication in the northern basin of Lake Taihu, China: human impacts on a large shallow lake.JOURNAL OF PALEOLIMNOLOGY,38(1).
MLA	Wu Jinglu,et al."Sedimentary evidence for recent eutrophication in the northern basin of Lake Taihu, China: human impacts on a large shallow lake".JOURNAL OF PALEOLIMNOLOGY 38.1(2007).