Spatial and Seasonal Patterns of Nutrients and Heavy Metals in Twenty-Seven Rivers Draining into the South China Sea

doi:10.3390/w10010050

CORC > 武汉植物园 > 中国科学院武汉植物园

	Spatial and Seasonal Patterns of Nutrients and Heavy Metals in Twenty-Seven Rivers Draining into the South China Sea
	Liu, Wenzhi 2; Ye, Changdong 1; Deng, Amei 3
刊名	WATER
	2018
卷号	10 期号:1 页码:15
关键词	nitrogen phosphorus source identification trace metals water quality
ISSN号	2073-4441
DOI	10.3390/w10010050
英文摘要	Due to the acceleration of industrialization and urbanization in recent decades, the majority of coastal rivers and estuaries in China have been moderately or severely contaminated by a variety of pollutants. We investigated the spatial and seasonal variations of water nutrients (permanganate index, chemical oxygen demand, biochemical oxygen demand, ammonium, nitrate, total nitrogen, and total phosphorus) and heavy metals (Hg, Pb, Cu, Zn, Se, As, Cd, Cr, Fe, and Mn) in 27 subtropical rivers draining into the South China Sea. Our results indicated that the average concentrations of all water quality parameters except ammonium, total nitrogen, and total phosphorus satisfied the requirements for grade III of the surface water quality standard of China. The concentrations of both nutrients and heavy metals showed a strong spatial variation. Cluster analysis classified the 27 rivers into three spatial clusters corresponding to low, moderate, and high pollution levels. In terms of seasonal variation, the values of chemical oxygen demand and biochemical oxygen demand in wet seasons were significantly lower than those in dry seasons. Multivariate statistical analyses demonstrated that river nutrients might mainly originate from domestic, industrial, and agricultural wastewaters, while heavy metals likely came from industrial activities and natural weathering processes. The findings of this study suggest that for reducing the pollution of subtropical rivers draining into the South China Sea, further efforts should be made to control nitrogen and phosphorus export from catchments.
资助项目	Foundation of College of Forestry and Landscape Architecture, South China Agricultural University[2016LA024]
WOS研究方向	Water Resources
语种	英语
出版者	MDPI
WOS记录号	WOS:000424397400048
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/4775]
专题	中国科学院武汉植物园
通讯作者	Liu, Wenzhi
作者单位	1.South China Agr Univ, Coll Forestry & Landscape Architecture, Guangdong Key Lab Innovat Dev & Utilizat Forest P, Guangzhou 510642, Guangdong, Peoples R China 2.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei, Peoples R China 3.Chinese Acad Sci, Wuhan Lib & Intelligence Ctr, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Liu, Wenzhi,Ye, Changdong,Deng, Amei. Spatial and Seasonal Patterns of Nutrients and Heavy Metals in Twenty-Seven Rivers Draining into the South China Sea[J]. WATER,2018,10(1):15.
APA	Liu, Wenzhi,Ye, Changdong,&Deng, Amei.(2018).Spatial and Seasonal Patterns of Nutrients and Heavy Metals in Twenty-Seven Rivers Draining into the South China Sea.WATER,10(1),15.
MLA	Liu, Wenzhi,et al."Spatial and Seasonal Patterns of Nutrients and Heavy Metals in Twenty-Seven Rivers Draining into the South China Sea".WATER 10.1(2018):15.