Phosphorus characteristics, distribution, and relationship with environmental factors in surface sediments of river systems in Eastern China

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

	Phosphorus characteristics, distribution, and relationship with environmental factors in surface sediments of river systems in Eastern China
	Zhang, Wenqiang; Jin, Xin; Zhu, Xiaolei; Shan, Baoqing; Zhao, Yu
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2016-10
卷号	23 期号:19 页码:19440-19449
关键词	Phosphorus Sediment SMT P-31-NMR River Eastern China
英文摘要	Phosphorus (P) is an essential nutrient for aquatic organisms. However, too much P discharged into limnetic ecosystems can induce eutrophication. The concentration of P in freshwater ecosystems has escalated in Eastern China due to overuse of fertilizer and excess emission of sewage, which is the result of the development of industry and agriculture in this area. However, little is known about the P characteristics and its environmental factors in river systems. Here, we present the results of P characterization and its relationships with environmental factors in Eastern China by applying SMT and P-31-NMR methods. The results showed that the concentrations of P in surface sediments varied with the river system, and more than 50 % of the samples had P concentrations exceeding 500 mg kg(-1). HCl-Pi was the dominant Pi in surface sediments, with the highest percentage (96.5 %) in the Yellow River System. Mono-P was the dominant Po in river sediments, followed by DNA-P. The PCA approach indicated that NaOH-Pi and ortho-P clustered in one group, with a second group including mono-P, diesters-P, and HCl-Pi. Phon-P and pyro-P belonged to different groups. On a regional scale, NaOH-Pi and Po showed a negative relationship with pH in sediments. Continuous eutrophication was induced by the presence of dams, and oxygen-consuming pollutants, such as NH3-N and CODcr, even when external P input was cut in heavily polluted rivers. The research revealed the characteristics of P in different river systems and proposed a conceptual model of P biogeochemical cycles in heavily polluted rivers. Results from this study may provide insight into P characteristics in Eastern China and would set a scientific basis for effective P management in developing countries.
收录类别	SCI
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/36065]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Zhang, Wenqiang,Jin, Xin,Zhu, Xiaolei,et al. Phosphorus characteristics, distribution, and relationship with environmental factors in surface sediments of river systems in Eastern China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016,23(19):19440-19449.
APA	Zhang, Wenqiang,Jin, Xin,Zhu, Xiaolei,Shan, Baoqing,&Zhao, Yu.(2016).Phosphorus characteristics, distribution, and relationship with environmental factors in surface sediments of river systems in Eastern China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,23(19),19440-19449.
MLA	Zhang, Wenqiang,et al."Phosphorus characteristics, distribution, and relationship with environmental factors in surface sediments of river systems in Eastern China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23.19(2016):19440-19449.