Distribution of nitrogen and phosphorus and estimation of nutrient fluxes in the water and sediments of Liangzi Lake, 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

	Distribution of nitrogen and phosphorus and estimation of nutrient fluxes in the water and sediments of Liangzi Lake, China
	Meng, Xin ; Zhang, Wenqiang ; Shan, Baoqing
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2020-03-01
卷号	27 期号:7 页码:7096-7104
关键词	Nutrients Flux Sediment-water interface Fick's law
ISSN号	0944-1344
英文摘要	Water samples and sediments from Liangzi Lake were taken and used to study the vertical distribution characteristics of nitrogen (N) and phosphorus (P) in both the overlying and pore water. Fluxes of ammonia (NH4+-N) and phosphate (PO43--P) were calculated using a one-dimensional transport-reaction model based on Fick's First Law. The results showed that the mean NH4+-N and NO3--N concentrations in the overlying water of Liangzi Lake were 2.59 and 0.46 mg L-1, respectively. The mean PO43--P concentrations were lower than the detection limit. Both N and P displayed peaks at the sediment-water interface. For example, the mean concentration of ammonia in pore water in the surficial layer (0-5 cm) was 4.29 +/- 2.74 mg center dot L-1, which was twice than that of the overlying water. Two PO43--P vertical profile regimes were identified; one had a gradually increasing trend, while the other first increased and then decreased. The mean orthophosphate concentration in the pore water of the surface layer (0-5 cm) was 0.01 +/- 0.01 mg center dot L-1. The spatial distribution of ammonia flux values was highly heterogeneous. Using these data, the annual load contribution of autochthonous ammonia was calculated to be 481 t a(-1). Studying N and P pollution and fluxes in the lakes of urban drinking water sources facilitates the provision of protection measures.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/42639]
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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Meng, Xin,Zhang, Wenqiang,Shan, Baoqing. Distribution of nitrogen and phosphorus and estimation of nutrient fluxes in the water and sediments of Liangzi Lake, China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2020,27(7):7096-7104.
APA	Meng, Xin,Zhang, Wenqiang,&Shan, Baoqing.(2020).Distribution of nitrogen and phosphorus and estimation of nutrient fluxes in the water and sediments of Liangzi Lake, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,27(7),7096-7104.
MLA	Meng, Xin,et al."Distribution of nitrogen and phosphorus and estimation of nutrient fluxes in the water and sediments of Liangzi Lake, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 27.7(2020):7096-7104.