Risk assessment and spatial distribution characteristics of heavy metals in soil of typical vegetable planting areas in Wuqing

Heavy metal pollution has seriously endangered human health and food security. In order to explore the dynamic changes of heavy metals in soil in different periods, a total of 95 surface soil samples(bulk soil) were collected from Wuqing District, Tianjin, China. Then the heavy metals(i.e., As, Cd,...

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Autores principales:	SU Huiyue, WANG Lu, QIAN Huan, HAN Yuejiang, LIU Jiangchuan
Formato:	article
Lenguaje:	ZH
Publicado:	Agro-Environmental Protection Institute, Ministry of Agriculture 2021
Materias:	vegetable cultivated area heavy metal risk assessment spatial distribution industrial emissions sewage irrigation Agriculture (General) S1-972 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/5f8cab545a834ae5b10e4cc19fad0c4e
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spelling	oai:doaj.org-article:5f8cab545a834ae5b10e4cc19fad0c4e2021-12-03T02:29:42ZRisk assessment and spatial distribution characteristics of heavy metals in soil of typical vegetable planting areas in Wuqing2095-681910.13254/j.jare.2021.0538https://doaj.org/article/5f8cab545a834ae5b10e4cc19fad0c4e2021-11-01T00:00:00Zhttp://www.aed.org.cn/nyzyyhjxb/html/2021/6/20210619.htmhttps://doaj.org/toc/2095-6819Heavy metal pollution has seriously endangered human health and food security. In order to explore the dynamic changes of heavy metals in soil in different periods, a total of 95 surface soil samples(bulk soil) were collected from Wuqing District, Tianjin, China. Then the heavy metals(i.e., As, Cd, Cu, Cr, Ni, Pb, and Zn) concentrations in these simples were quantified. The spatial distribution of soil heavy metals in farmland was analyzed based on geostatistical analysis to explore the accumulation of heavy metals in soil, potential ecological risks and sources of heavy metals in soil. The results showed that the cumulative pollution of heavy metals Pb, Cu, Cr, Zn, Cd and As increased with time except Ni. The geoaccumulation index and potential ecological risk index indicated that Cd and As in the study area were the main contributors to the total ecological risk. The spatial characteristics of heavy metals in 2005 and 2019 showed that Cu, Cr, Ni, Zn and As had similar spatial distribution, the high-value areas were concentrated in the southwest of the study area. The highvalue areas of Pb showed non-point source pollution, while Cd showed obvious point source pollution. Cu was mainly affected by agricultural fertilization, Zn was mainly affected by agricultural fertilization and sewage irrigation. As, Ni and Cr was mainly caused by soil parent material. Cd might originate from industrial activities. Pb was attributed to traffic exhaust emissions. The study have shown that the main causes of heavy metal accumulation were industrial emissions and sewage irrigation. This study clarifies the spatial distribution characteristics and pollution sources of heavy metals in soil in Wuqing District, Tianjin, which can provide theoretical basis for pollution control and ecological protection in the study area.SU HuiyueWANG LuQIAN HuanHAN YuejiangLIU JiangchuanAgro-Environmental Protection Institute, Ministry of Agriculturearticlevegetable cultivated areaheavy metalrisk assessmentspatial distributionindustrial emissionssewage irrigationAgriculture (General)S1-972Environmental sciencesGE1-350ZHJournal of Agricultural Resources and Environment, Vol 38, Iss 6, Pp 1122-1131 (2021)
institution	DOAJ
collection	DOAJ
language	ZH
topic	vegetable cultivated area heavy metal risk assessment spatial distribution industrial emissions sewage irrigation Agriculture (General) S1-972 Environmental sciences GE1-350
spellingShingle	vegetable cultivated area heavy metal risk assessment spatial distribution industrial emissions sewage irrigation Agriculture (General) S1-972 Environmental sciences GE1-350 SU Huiyue WANG Lu QIAN Huan HAN Yuejiang LIU Jiangchuan Risk assessment and spatial distribution characteristics of heavy metals in soil of typical vegetable planting areas in Wuqing
description	Heavy metal pollution has seriously endangered human health and food security. In order to explore the dynamic changes of heavy metals in soil in different periods, a total of 95 surface soil samples(bulk soil) were collected from Wuqing District, Tianjin, China. Then the heavy metals(i.e., As, Cd, Cu, Cr, Ni, Pb, and Zn) concentrations in these simples were quantified. The spatial distribution of soil heavy metals in farmland was analyzed based on geostatistical analysis to explore the accumulation of heavy metals in soil, potential ecological risks and sources of heavy metals in soil. The results showed that the cumulative pollution of heavy metals Pb, Cu, Cr, Zn, Cd and As increased with time except Ni. The geoaccumulation index and potential ecological risk index indicated that Cd and As in the study area were the main contributors to the total ecological risk. The spatial characteristics of heavy metals in 2005 and 2019 showed that Cu, Cr, Ni, Zn and As had similar spatial distribution, the high-value areas were concentrated in the southwest of the study area. The highvalue areas of Pb showed non-point source pollution, while Cd showed obvious point source pollution. Cu was mainly affected by agricultural fertilization, Zn was mainly affected by agricultural fertilization and sewage irrigation. As, Ni and Cr was mainly caused by soil parent material. Cd might originate from industrial activities. Pb was attributed to traffic exhaust emissions. The study have shown that the main causes of heavy metal accumulation were industrial emissions and sewage irrigation. This study clarifies the spatial distribution characteristics and pollution sources of heavy metals in soil in Wuqing District, Tianjin, which can provide theoretical basis for pollution control and ecological protection in the study area.
format	article
author	SU Huiyue WANG Lu QIAN Huan HAN Yuejiang LIU Jiangchuan
author_facet	SU Huiyue WANG Lu QIAN Huan HAN Yuejiang LIU Jiangchuan
author_sort	SU Huiyue
title	Risk assessment and spatial distribution characteristics of heavy metals in soil of typical vegetable planting areas in Wuqing
title_short	Risk assessment and spatial distribution characteristics of heavy metals in soil of typical vegetable planting areas in Wuqing
title_full	Risk assessment and spatial distribution characteristics of heavy metals in soil of typical vegetable planting areas in Wuqing
title_fullStr	Risk assessment and spatial distribution characteristics of heavy metals in soil of typical vegetable planting areas in Wuqing
title_full_unstemmed	Risk assessment and spatial distribution characteristics of heavy metals in soil of typical vegetable planting areas in Wuqing
title_sort	risk assessment and spatial distribution characteristics of heavy metals in soil of typical vegetable planting areas in wuqing
publisher	Agro-Environmental Protection Institute, Ministry of Agriculture
publishDate	2021
url	https://doaj.org/article/5f8cab545a834ae5b10e4cc19fad0c4e
work_keys_str_mv	AT suhuiyue riskassessmentandspatialdistributioncharacteristicsofheavymetalsinsoiloftypicalvegetableplantingareasinwuqing AT wanglu riskassessmentandspatialdistributioncharacteristicsofheavymetalsinsoiloftypicalvegetableplantingareasinwuqing AT qianhuan riskassessmentandspatialdistributioncharacteristicsofheavymetalsinsoiloftypicalvegetableplantingareasinwuqing AT hanyuejiang riskassessmentandspatialdistributioncharacteristicsofheavymetalsinsoiloftypicalvegetableplantingareasinwuqing AT liujiangchuan riskassessmentandspatialdistributioncharacteristicsofheavymetalsinsoiloftypicalvegetableplantingareasinwuqing
_version_	1718373932788088832

Risk assessment and spatial distribution characteristics of heavy metals in soil of typical vegetable planting areas in Wuqing

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