Bioavailability of organic phosphorus in an eutrophic lake: Insights from an in-situ experiment

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Bioavailability of organic phosphorus in an eutrophic lake: Insights from an in-situ experiment
	Jin, Xin ; Rong, Nan ; Zhang, Wenqiang ; Meng, Xin ; Shan, Baoqing
刊名	ECOLOGICAL INDICATORS
	2019-12-01
卷号	107 页码:-
关键词	Organic phosphorus Sediment Solution P-31 NMR Eutrophication
ISSN号	1470-160X
英文摘要	The bioavailability of organic phosphorus (Porg) in surface sediments of an eutrophic lake was studied in an in-situ experiment. On the temporal scale, soluble reactive phosphorus (SRP) in the surface water showed an initial decrease and then increased in western and middle parts of the lake. In contrast, the SRP remained about 0.22 mg L-1 throughout the year in the eastern area of the lake. Four Porg compounds, phosphonate, orthophosphate monoesters, phospholipids and deoxyribonucleic acid phosphorus, were detected using solution P-31 nuclear magnetic resonance spectroscopy. Orthophosphate monoesters were the dominant Porg in the sediment extracts, higher than the orthophosphate diesters deoxyribonucleic acid phosphorus and phospholipids. The SRP and Porg showed obvious seasonal variations in different lake regions. The surface water SRP had a negative relationship with sedimentary Porg in the western and middle lake regions. From spring to autumn, SRP in the water column decreased while Porg in the surface sediment increased; from autumn to winter, SRP in the water column increased and Porg in the surface sediment decreased. According to aquatic metabolism, we inferred that excessive external phosphorus input was the trigger and the aquatic plants were the pump for Porg biogeochemical cycling in the shallow lake. Therefore, appropriate human intervention, such as the harvest of aquatic plants, is vital for eutrophication control in freshwater ecosystems.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/42623]
专题	生态环境研究中心_环境水质学国家重点实验室
作者单位	1.South China Inst Environm Sci, MEE, Guangzhou 510530, Guangdong, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, POB 2871, Beijing 100085, Peoples R China 3.Hebei Univ Engn, Coll Energy & Environm Engn, Handan 056038, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Jin, Xin,Rong, Nan,Zhang, Wenqiang,et al. Bioavailability of organic phosphorus in an eutrophic lake: Insights from an in-situ experiment[J]. ECOLOGICAL INDICATORS,2019,107:-.
APA	Jin, Xin,Rong, Nan,Zhang, Wenqiang,Meng, Xin,&Shan, Baoqing.(2019).Bioavailability of organic phosphorus in an eutrophic lake: Insights from an in-situ experiment.ECOLOGICAL INDICATORS,107,-.
MLA	Jin, Xin,et al."Bioavailability of organic phosphorus in an eutrophic lake: Insights from an in-situ experiment".ECOLOGICAL INDICATORS 107(2019):-.