中国滨海湿地土壤汞空间分布及影响因素

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摘要通过对7个典型滨海湿地土壤（0~20cm）中总汞含量及土壤理化性质、气候以及社会经济因素的测定收集，研究了滨海湿地土壤中汞的空间分布规律和影响因子之间的关系，并对不同介质环境内汞含量进行分析.结果表明：我国滨海湿地土壤总汞的含量范围是1.26~169.94ng/g，平均值为（33.82±3.09） ng/g；滨海湿地土壤汞含量差异是由土壤理化性质、社会经济以及气候因素共同影响的结果，其中土壤理化性质中pH值、有机质、总铁、总氮为关键影响因素；在汞的输入途径中，河流输送对中国滨海湿地土壤总汞含量的影响要高于大气输送.

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	张苗苗
	张曼胤
	龙颂元
	胡宇坤
	刘魏魏
	王钊

关键词 ：中国滨海湿地土壤, 汞浓度, 空间分布, 河流输送, 汞循环

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

收稿日期: 2022-05-24

PACS:	X53
	X833

基金资助:“十三五”重点研发专项（2017YFC0506205）

通讯作者: 张曼胤,研究员,cneco@126.com E-mail: cneco@126.com

作者简介: 张苗苗(1998-),女,河北邯郸人,硕士研究生,主要从事湿地生态功能作用机理等方面的研究.

引用本文:

张苗苗, 张曼胤, 龙颂元, 胡宇坤, 刘魏魏, 王钊. 中国滨海湿地土壤汞空间分布及影响因素[J]. 中国环境科学, 2022, 42(12): 5758-5767. ZHANG Miao-miao, ZHANG Man-Yin, LONG Song-yuan, HU Yu-kun, LIU Wei-wei, WANG Zhao. Spatial distribution and influencing factors of soil mercury in coastal wetlands of China. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(12): 5758-5767.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2022/V42/I12/5758

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