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Mercury in forest mushrooms and topsoil from the Yunnan highlands and the subalpine region of the Minya Konka summit in the Eastern Tibetan Plateau

文献类型： 外文期刊

作者： Falandysz, Jerzy 1 ; Saba, Martyna 1 ; Liu, Hong-Gao 2 ; Li, Tao 3 ; Wang, Ji-Peng 4 ; Wiejak, Anna 1 ; Zhang, Ji 6 ; Wan 1 ;

作者机构： 1.Univ Gdansk, Lab Environm Chem & Ecotoxicol, Gdansk, Poland

2.Yunnan Agr Univ, Coll Agron & Biotechnol, Kunming, Peoples R China

3.Yuxi Normal Univ, Coll Resources & Environm, Yuxi, Peoples R China

4.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Peoples R China

5.Sichuan Acad Agr Sci, Inst Soil & Fertilizer, Chengdu, Peoples R China

6.Yunnan Acad Agr Sci, Inst Med Plants, Kunming, Peoples R China

7.Yunnan Tech Ctr Qual Chinese Mat Med, Kunming, Yunnan, Peoples R China

关键词： Asia;Foraging;Heavy metals;Mushrooms;China;Yunnan

期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH （ 影响因子：4.223； 五年影响因子：4.306 ）

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收录情况： SCI

摘要： This study aimed to investigate and discuss the occurrence and accumulation of mercury in the fruiting bodies of wild-growing fungi (Macromycetes) collected from montane forests in two regions of southwestern China with differences in soil geochemistry, climate and geographical conditions. Fungal mycelia in soils of the subalpine region of the Minya Konka (Gongga Mountain) in Sichuan and in the highlands of Yunnan efficiently accumulated mercury in fruiting bodies (mushrooms). The examined sites in Yunnan with highly mineralized red and yellow soils showed Hg contents ranging from 0.066 to 0.28 mg kg(-1) dry biomass (db) which is roughly similar to the results obtained for samples collected from sites with dark soils relatively rich in organic matter from a remote, the subalpine region of Minya Konka. Due to the remoteness of the subalpine section of Minya Konka, as well as its elevation and climate, airborne mercury from long-range transport could be deposited preferentially on the topsoil and the Hg levels determined in soil samples taken beneath the fruiting bodies were up to 0.48 mg kg(-1) dry matter. In Yunnan, with polymetallic soils (Circum-Pacific Mercuriferous Belt), Amanita mushrooms showed mercury in caps of fruiting bodies of up to 7.3 mg kg(-1) dry biomass. Geogenic Hg from the mercuriferous belt seems to be the overriding source of mercury accumulated in mushrooms foraged in the regions of Yunnan, while long-range atmospheric transport and subsequent deposition are the mercury sources for specimens foraged in the region of Minya Konka.

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