Risk assessment for and microbial community changes in Farmland soil contaminated with heavy metals and metalloids

doi:10.1016/j.ecoenv.2019.109685

CORC > 成都生物研究所 > 中国科学院成都生物研究所 > 食品安全与环境治理领域 > 应用与环境微生物研究

	Risk assessment for and microbial community changes in Farmland soil contaminated with heavy metals and metalloids
	Wang, Xu 2,3,4; Gao, Ping 2; Li Daping 3,4; Liu, Ju 1,4; Yang, Nuan 3; Gu, Wenzhi 3,4; He, Xiaohong 3; Tang, Wenzhong 4,5
刊名	ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
	2019
卷号	185 页码:109685
关键词	Farmland soil Heavy metals Spatial analysis Risk assessment Microbial response
ISSN号	0147-6513
DOI	10.1016/j.ecoenv.2019.109685
产权排序	1
文献子类	Article
英文摘要	Food security and human health can be seriously affected by heavy metal and metalloid (HM) pollution of soil. In this study, the risks posed by HMs and microbial community responses to HM pollution of agricultural soil in southwestern China were investigated. The C, N, P, and S (nutrients) concentrations were 12040.7-15912.7, 1298.06-1832.01, 750.91-2050.35, and 269.17-2115.52 mg/kg, respectively. The As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn concentrations were 3.11-8.20, 1.85-6.56, 22.83-43.96, 11.21-23.30, 0.08-0.81, 11.02-22.97, 24.07-42.96, and 193.63-698.39 mg/kg, respectively. Interpolation analysis indicated that the nutrient and HM concentrations varied spatially rather strongly. The concentrations of all of the elements were higher in soil from the northern sampling sites than in soil from the other sites. HMs in soil were found to pose high levels of risk (RI 898.85, i.e., > 600). Cd contributed more than the other HMs to the risk assessment values (Er-Cd 293.72-1031.94), so was the most serious contaminant. Microbial diversity decreased over time in soil with high HM concentrations (plot S2) and was lower than in soil with low HM concentrations (plot S8). The nutrient and HM concentrations correlated with the microbial community characteristics. Proteobacteria, Acidobacteria, and Chloroflexi were (in decreasing order) the dominant bacterial phyla. We speculate that these phyla may be strongly resistant to HMs. The fourth most common phylum was Actinobacteria. Bacteria in this phylum could be used as biological indicators of the HM pollution status. Soil micro-ecosystems can self-regulate. HM stress will affect the evolution of soil microorganisms and relevant functional genes. The spatiotemporal variability in the microbial community responses to HMs and the spatial analysis and ecological risk assessment results will be useful reference data for the remediation of HM-polluted soil.
学科主题	Environment/ecology
URL标识	查看原文
WOS关键词	POLLUTION INDEXES ; FIELD-SCALE ; REMEDIATION ; ACCUMULATION ; RICE ; BIOMINERALIZATION ; BIOREMEDIATION ; ENVIRONMENT ; PHOSPHORUS ; MECHANISMS
WOS研究方向	Environmental Sciences & Ecology ; Toxicology
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000491218500035
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/30969]
专题	环境治理与食品安全领域_应用与环境微生物研究
通讯作者	Li Daping
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China; 2.Sichuan Univ, Coll Life Sci, Chengdu 610064, Sichuan, Peoples R China; 3.Chinese Acad Sci, Key Lab Environm & Appl Microbiol, Environm Microbiol Key Lab Sichuan Prov, Chengdu Inst Biol, Chengdu 610041, Sichuan, Peoples R China; 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 5.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 10085, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xu,Gao, Ping,Li Daping,et al. Risk assessment for and microbial community changes in Farmland soil contaminated with heavy metals and metalloids[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2019,185:109685.
APA	Wang, Xu.,Gao, Ping.,Li Daping.,Liu, Ju.,Yang, Nuan.,...&Tang, Wenzhong.(2019).Risk assessment for and microbial community changes in Farmland soil contaminated with heavy metals and metalloids.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,185,109685.
MLA	Wang, Xu,et al."Risk assessment for and microbial community changes in Farmland soil contaminated with heavy metals and metalloids".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 185(2019):109685.