中国滨海湿地土壤汞空间分布及影响因素

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Abstract In this paper, by measuring soil total mercury content (0~20cm), soil physical and chemical properties, climatic and social-economic factors in seven typical coastal wetlands, we studied the spatial distribution of mercury in coastal wetland soils and its relationship with driving factors, and analyzed the mercury content in different environments. The results showed that the total mercury content in coastal wetland soils in China ranged from 1.26ng/g to 169.94ng/g, with an average of 33.82±3.09ng/g. Soil mercury content in coastal wetlands was shaped by soil physical and chemical properties, social economic factors and climate factors, among which pH, organic matter, total iron and total nitrogen were the main factors. For the pathways of mercury input, the influence of river transport on soil total mercury content of coastal wetlands in China was higher than that of air transport.

Key words： coastal wetland soils in China mercury concentrations spatial distribution river transport mercury cycling

Received: 24 May 2022

PACS:	X53
	X833

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	ZHANG Miao-miao
	ZHANG Man-Yin
	LONG Song-yuan
	HU Yu-kun
	LIU Wei-wei
	WANG Zhao

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ZHANG Miao-miao,ZHANG Man-Yin,LONG Song-yuan等. Spatial distribution and influencing factors of soil mercury in coastal wetlands of China[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(12): 5758-5767.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I12/5758

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