文献类型：期刊文献

英文题名：Does arsenic play an important role in the soil microbial community around a typical arsenic mining area?

作者：Wu, Fan[1,2] Wang, Jun-Tao[1] Yang, Jun[3] Li, Jing[4] Zheng, Yuan-Ming[1]

第一作者：Wu, Fan

通信作者：Zheng, YM[1];Yang, J[2]

机构：[1]Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China;[2]Univ Chinese Acad Sci, Beijing 100049, Peoples R China;[3]Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China;[4]Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China

年份：2016

卷号：213

起止页码：949-956

外文期刊名：ENVIRONMENTAL POLLUTION

收录：;EI(收录号：20161502217826);Scopus(收录号：2-s2.0-84962374063);WOS:【SCI-EXPANDED(收录号:WOS:000377921800100)】；

基金：The current work was financially supported by the projects with the grant No. KFJ-EW-STS-014 and KFJ-EW-ZY-005, and the Youth Innovation Promotion Association, Chinese Academy of Sciences.

语种：英文

外文关键词：Land-use; Basic soil properties; Grain As; Health risk; Structural equation model (SEM)

摘要：Arsenic (As) can cause serious hazards to human health, especially in mining areas. Soil bacterial communities, which are critical parts of the soil ecosystem, were analyzed directly for soil environmental factors. As a consequence, it is of great significance to understand the ecological risk of arsenic contamination on bacteria, especially at the local scale. In this study, 33 pairs of soil and grain samples were collected from the corn and paddy fields around an arsenic mining area in Shimen County in Hunan Province, China. Significant differences were found between the soil nitrogen, As concentrations, and bacteria activities among these two types of land use. According to the structural equation model (SEM) analysis, compared with other environmental factors, soil As was not the key factor affecting the bacterial community, even when grain As was beyond the threshold of the national food hygiene standards of China. In the corn field, soil pH was the main factor dominating the bacterial richness, composition and grain As. Meanwhile, in the paddy field the soil total nitrogen (TN) and total carbon (TC) were the main factors impacting the bacterial richness, and the bacterial community composition was mainly affected by pH. The interactions between grain As and soil As were weak in the corn field. The bacterial communities played important roles in the food chain risk of As. The local policy of transforming paddy soil to dry land could greatly reduce the health risk of As through the food chain. (C) 2016 Elsevier Ltd. All rights reserved.