广西宜州市土壤重金属元素地球化学特征
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摘要
对广西宜州市土壤重金属元素地球化学特征与富集规律的研究表明,研究区土壤以镉(Cd)污染为主,成土母质是土壤Cd的主要来源,大气干湿沉降、灌溉水、化肥及人类活动等在一定程度上影响了土壤环境质量。全区土壤环境质量综合等级为一等的土壤占比为26.67%,四等和五等的土壤占比达到了47.07%,土壤环境综合质量总体一般。土壤重金属元素形态分析显示:As、Hg、Pb、Cr主要以惰性态为主,而Cd的易利用态和中等利用态分配比率分别占到了21.6%和46.6%,活性很强,是土壤Cd污染的主要内因。
Geochemical characteristics of soil heavy metal elements and their enrichment regularity in Yizhou city of Guangxi were studied.The results of the study showed that it was mainly characterized by the pollution of Cd in the study area,soil parent material was the main source of soil Cd.Atmospheric deposition,irrigation water,fertilizer and human activities also affected soil environmental quality to a certain extent.The overall comprehensive quality of the soil environment was in a general level,in which the proportion of soil in first grade accounted for 26.67%,fourth and fifth grades accounted for 47.07%.The analysis of occurrence state of heavy metals in soil showed that As,Hg,Pb and Cr elements were mainly inert state,while the activity of Cd element was stronger—which had the allocation ratios of easy-to-use state of 21.6%and mediumto-use state 46.6%.This was the main internal cause of soil Cd pollution.
Geochemical characteristics of soil heavy metal elements and their enrichment regularity in Yizhou city of Guangxi were studied.The results of the study showed that it was mainly characterized by the pollution of Cd in the study area,soil parent material was the main source of soil Cd.Atmospheric deposition,irrigation water,fertilizer and human activities also affected soil environmental quality to a certain extent.The overall comprehensive quality of the soil environment was in a general level,in which the proportion of soil in first grade accounted for 26.67%,fourth and fifth grades accounted for 47.07%.The analysis of occurrence state of heavy metals in soil showed that As,Hg,Pb and Cr elements were mainly inert state,while the activity of Cd element was stronger—which had the allocation ratios of easy-to-use state of 21.6%and mediumto-use state 46.6%.This was the main internal cause of soil Cd pollution.
引文
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[15]晋王强,南忠仁,刘晓文,等.金昌市郊农田土壤Cu、Zn、Ni形态分布特征与生物有效性评价[J].环境化学,2010,29(2):220-225.
[16]刘劲松,胡俊良,张鲲,等.柿竹园矿区及周边农田土壤重金属形态分布与生物有效性研究[J].金属矿山,2018,509(11):155-160.
[17]周言凤,苏庆平.土壤重金属形态分析研究综述[J].广东化工,2018,45(22):84-85.
[18]李燕,卢楠,李刚.土壤重金属赋存形态研究进展[J].绿色科技,2018,22(1):66-68,71.
[2]陈能场,郑煜基,何晓峰,等.《全国土壤污染状况调查公报》探析[J].农业环境科学学报,2017,36(9):1689-1692.
[3]全国国土资源标准化技术委员会(SAT/TC93).土地质量地球化学评价规范.DZ/T 0295-2016[S].中华人民共和国国土资源部,2016.
[4]黄子龙,范汝海,李庚华.广西全州县土地质量地球化学评价成果报告[R].桂林:广西二七一地质队,2016.
[5]魏复盛,陈静生,吴燕玉,等.中国土壤元素背景值[M].北京:中国环境科学出版社,1990.
[6]生态环境部土壤环境管理司、科技标准司.土壤环境质量农用地土壤污染风险管控标准(试行):GB 15618-2018[S].2018.
[7]孙凯,孙彬彬,周国华,等.福建龙海土壤重金属含量特征及影响因素研究[J].现代地质,2018,32(6):1302-1310.
[8]刘文辉.甘肃省张掖-永昌地区土壤重金属元素地球化学特征[J].物探与化探,2013,37(5):884-888.
[9]成晓梦.云南不同成土母质土壤剖面中重金属元素地球化学行为与风险分析[D].北京:中国地质大学(北京),2016.
[10]宋冲.大气降尘中重金属形态分析及其环境学意义[J].中国高新技术企业,2014(13):84-85.
[11]张祥年,辛存林,李春亮,等.甘肃省白银市土壤重金属污染地球化学特征及其表生地球化学成因[J].地质科技情报,2010,29(4):124-131.
[12]余涛,杨忠芳,钟坚,等.土壤中重金属元素Pb、Cd地球化学行为影响因素研究[J].地学前缘,2008,15(5):67-73.
[13]郑顺安.我国典型农田土壤中重金属的转化与迁移特征研究[D].杭州:浙江大学,2010.
[14]中国绿色食品发展中心.绿色食品产地环境质量:NY/T 391-2013[S].中华人民共和国农业部,2014.
[15]晋王强,南忠仁,刘晓文,等.金昌市郊农田土壤Cu、Zn、Ni形态分布特征与生物有效性评价[J].环境化学,2010,29(2):220-225.
[16]刘劲松,胡俊良,张鲲,等.柿竹园矿区及周边农田土壤重金属形态分布与生物有效性研究[J].金属矿山,2018,509(11):155-160.
[17]周言凤,苏庆平.土壤重金属形态分析研究综述[J].广东化工,2018,45(22):84-85.
[18]李燕,卢楠,李刚.土壤重金属赋存形态研究进展[J].绿色科技,2018,22(1):66-68,71.