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	Effects of land use on concentrations of metals in surface soils and ecological risk around Guanting Reservoir, China
	Luo, Wei; Lu, Yonglong; Giesy, John P.; Wang, Tieyu; Shi, Yajuan; Wang, Guang; Xing, Ying
	2007
会议名称	3rd International Conference on Environmental Enhancement and Sustainable Development
会议日期	AUG 04-08, 2006
会议地点	Hohhot, PEOPLES R CHINA
关键词	metals land use ecological risk
英文摘要	It is accepted that the historical routine use of agrochemicals may have resulted in undesirable concentrations of metals in the environment. To investigate and assess the effects of land use on concentrations of heavy metals around the Guanting Reservoir in China, 52 surface soil samples (depth of 2-10 cm) were taken from areas where four types of land use were practiced (including arable land, woodland, bare land, orchard land). The metals and metalloids (As, Cr, Ni, Cu, Zn, Cd, and Pb) were analyzed using inductively coupled plasma-atomic emission spectroscopy (ICP-AES). Significant accumulation of As, Cd, and Cr was found in soils of arable land. Based on correlation and cluster analysis, it can be concluded that Cd and Zn originate mainly from phosphate fertilizer, Pb from the use of insecticides, fertilizers, and sewage sludge as well as air deposition, and Cu from copper-based fungicides, while As, Ni and Cr might come from parent soil material. According to an ecological risk analysis of metals based on the ecological index suggested by Hakanson, the four types of land can be ranked by severity of ecological risk as follows: arable land > woodland > bare land > orchard land, with a high ecological risk of Cd for all four types. Management measures for land use planners for avoiding water, soil, and sediment pollution caused by metals around the Guanting Reservoir are presented.
ISSN号	0269-4042
内容类型	会议论文
源URL	[http://ir.rcees.ac.cn/handle/311016/24716]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Luo, Wei,Lu, Yonglong,Giesy, John P.,et al. Effects of land use on concentrations of metals in surface soils and ecological risk around Guanting Reservoir, China[C]. 见:3rd International Conference on Environmental Enhancement and Sustainable Development. Hohhot, PEOPLES R CHINA. AUG 04-08, 2006.

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