Spatiotemporal variations of internal P-loading and the related mechanisms in the large shallow Lake Chaohu

CORC > 水生生物研究所 > 中科院水生所知识产出（2009年前） > 期刊论文

	Spatiotemporal variations of internal P-loading and the related mechanisms in the large shallow Lake Chaohu
	Zhang Min; Xie Ping; Xu Jun; Liu Bingqin; Yang Hong
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2006-04-01
卷号	49 页码:72-81
关键词	eutrophication water column sediment phosphorus species sorption and release Lake Chaohu cyanobacterial blooms
ISSN号	1006-9313
通讯作者	Xie, P, Chinese Acad Sci, Inst Hydrobiol, Donghu Ecosyst Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
中文摘要	Spatiotemporal variations of P species and adsorption behavior in water column, interstitial water, and sediments were investigated in the large shallow eutrophic Lake Chaohu. Orthophosphate (Ortho-P) and total phosphorus (TP) concentrations were significantly higher in the western part than in the eastern part of the lake, due to different nutrient inputs from the surrounding rivers. Moreover, particulate phosphorus (PP) concentration was in a similar spatial pattern to Ortho-P and TIP concentrations, and also showed significantly positive correlation with the biomass of Microcystis, indicating more uptake and store of phosphorus by Microcystis than by other algae. Increase of pH and intensive utilization of P by phytoplankton were the main factors promoting P (especially Fe-P) release from the sediment to interstitial water during the cyanobacterial blooms in Lake Chaohu. Spatial dynamics in TP concentration, P species and adsorption behavior of the sediment, coupled with the statistical analyses, suggested that the spatial heterogeneity of P contents in the sediment was influenced by various factors, e.g. human activities, soil geochemistry and mineral composition. In spite of similar TP contents in the sediments, increase in proportion of Fe-P concentration in the sediment may result in a high risk of P release.
英文摘要	Spatiotemporal variations of P species and adsorption behavior in water column, interstitial water, and sediments were investigated in the large shallow eutrophic Lake Chaohu. Orthophosphate (Ortho-P) and total phosphorus (TP) concentrations were significantly higher in the western part than in the eastern part of the lake, due to different nutrient inputs from the surrounding rivers. Moreover, particulate phosphorus (PP) concentration was in a similar spatial pattern to Ortho-P and TIP concentrations, and also showed significantly positive correlation with the biomass of Microcystis, indicating more uptake and store of phosphorus by Microcystis than by other algae. Increase of pH and intensive utilization of P by phytoplankton were the main factors promoting P (especially Fe-P) release from the sediment to interstitial water during the cyanobacterial blooms in Lake Chaohu. Spatial dynamics in TP concentration, P species and adsorption behavior of the sediment, coupled with the statistical analyses, suggested that the spatial heterogeneity of P contents in the sediment was influenced by various factors, e.g. human activities, soil geochemistry and mineral composition. In spite of similar TP contents in the sediments, increase in proportion of Fe-P concentration in the sediment may result in a high risk of P release.
学科主题	Geosciences, Multidisciplinary
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geosciences, Multidisciplinary
研究领域[WOS]	Geology
关键词[WOS]	PHOSPHORUS SORPTION CHARACTERISTICS ; SUBTROPICAL CHINESE LAKE ; MARINE-SEDIMENTS ; ORTHO-PHOSPHATE ; RELEASE ; WATER ; BLOOMS ; FORMS ; IRON ; ESTUARINE
收录类别	SCI
语种	英语
WOS记录号	WOS:000238958400007
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/8914]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	Chinese Acad Sci, Inst Hydrobiol, Donghu Ecosyst Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Zhang Min,Xie Ping,Xu Jun,et al. Spatiotemporal variations of internal P-loading and the related mechanisms in the large shallow Lake Chaohu[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2006,49:72-81.
APA	Zhang Min,Xie Ping,Xu Jun,Liu Bingqin,&Yang Hong.(2006).Spatiotemporal variations of internal P-loading and the related mechanisms in the large shallow Lake Chaohu.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,49,72-81.
MLA	Zhang Min,et al."Spatiotemporal variations of internal P-loading and the related mechanisms in the large shallow Lake Chaohu".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 49(2006):72-81.