[1]叶宏萌,李国平,郑茂钟,等.茶园土壤重金属空间分异及风险评价[J].森林与环境学报,2016,36(02):209-215.[doi:10.13324/j.cnki.jfcf.2016.02.013]
 YE Hongmeng,LI Guoping,ZHENG Maozhong,et al.Spatial variation and risk assessment of heavy metals in the tea garden soils[J].,2016,36(02):209-215.[doi:10.13324/j.cnki.jfcf.2016.02.013]
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茶园土壤重金属空间分异及风险评价()
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《森林与环境学报》[ISSN:2096-0018/CN:35-1327/S]

卷:
36
期数:
2016年02期
页码:
209-215
栏目:
出版日期:
2016-04-15

文章信息/Info

Title:
Spatial variation and risk assessment of heavy metals in the tea garden soils
作者:
叶宏萌12 李国平12 郑茂钟12 常雪花1 罗汉敏1
1. 武夷学院生态与资源工程学院, 福建武夷山 354300;
2. 福建省生态产业绿色技术重点实验室, 福建武夷山 354300
Author(s):
YE Hongmeng12 LI Guoping12 ZHENG Maozhong12 CHANG Xuehua1 LUO Hanmin1
1. College of Ecology and Resource Engineering, Wuyi University, Wuyishan, Fujian 354300, China;
2. Fujian Provincial Key Laboratory of Eco-industrial Green Technology, Wuyishan, Fujian 354300, China
关键词:
重金属茶园土壤空间分异风险评价武夷山
Keywords:
heavy metaltea garden soilspatial variationrisk assessmentWuyishan
分类号:
S571.1
DOI:
10.13324/j.cnki.jfcf.2016.02.013
摘要:
为研究武夷山茶园土壤重金属分布的空间变异性,采集武夷山不同生态区域条件下的茶园土壤样品,检测其Cu、Zn、Pb、Cr、Cd、As和Hg元素含量,并运用单项污染指数法、综合污染指数法和潜在生态危害指数法对不同区域茶园土壤重金属进行风险评价。结果表明:茶园土壤中不同种类元素的含量差异显著,不同生态条件下同种元素也具有一定的空间分异特征。其中,自然保护区茶园土壤Cd和Hg累积最为显著;生态区茶园土壤的Cu、Zn、Pb和Cr有一定累积;景区茶园土壤的Pb、Cr、Cd和As含量符合有机茶产地环境条件标准,但Hg略微累积。土壤综合污染指数评价的结果表明,保护区污染最为严重,生态区次之,景区尚无污染。各区域污染物的分担情况也不尽相同,其中各区域中Hg的分担率都较高(>25%)。潜在生态风险指数评价的结果显示,Cu、Zn、Pb、Cr和As在各茶园的风险等级为"低",属于轻微生态危害;Cd和Hg在保护区的风险等级以"重"为主,在生态区分别以"中"和"较重"为主,在景区则以"低"和"中"为主。各区域综合潜在生态风险危害大小为:保护区> 生态区> 景区,并应警惕Cd和Hg的潜在生态风险。
Abstract:
To study the spatial variation of heavy metal distribution in the tea garden soil of Wuyishan,the total amount of Cu, Zn, Pb, Cr, Cd, As and Hg elements were analyzed in the soil samples collected from different ecological conditions of Wuyishan tea gardens. And the ecological risk of those heavy metals was evaluated using single pollution index, comprehensive pollution index and potential ecological risk index. The results showed that there were significant differences in the contents between different types of heavy metal elements. The same element also displayed a certain degree of spatial differentiation characteristics under different ecological conditions. The significant accumulation of Cd and Hg was found in the tea garden soils of the nature reserve. The slight accumulation of Cu, Zn, Pb and Cr were found in the ecological zones. The content of Pb, Cr, Cd and As in the scenic areas could meet the environmental condition criteria for organic tea production. But, Hg showed slight accumulation in the scenic areas. Soil pollution index assessment showed that the tea garden soils of the nature reserve had been polluted most seriously, followed by the ecological zones. The scenic areas soils were free of pollution. Pollutants sharing situations were different in various studied areas. But,Hg sharing rates were high (more than 25%) and it should be particularly concerned.Potential ecological risk index assessment showed that the risk level of Cu, Zn, Pb, Cr and As was "low" and they had slight ecological harm to the tea garden.But,the risk levels of both Cd and Hg were mainly "heavy" in nature reserve,"medium" or "heavy" in ecological zones,and "low" or "medium" in scenic areas, respectively. Therefore, the order of comprehensive ecological risk harm level was that:nature reserve > ecological zones > scenic areas, and we should pay more attention to the potential ecological risks of Hg and Cd elements in Wuyishan tea garden soil.

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备注/Memo

备注/Memo:
收稿日期:2015-09-15;改回日期:2015-10-10。
基金项目:福建省教育厅科技项目(JA14311,JK2013056);福建省科技厅重点项目(2014N0030);福建省科技创新平台建设计划项目(2013N2009)。
作者简介:叶宏萌(1984-),女,讲师,博士研究生,从事水资源保护和环境地球化学研究。E-mail:hongmengye@sina.com。
通讯作者:李国平(1966-),男,教授,博士,从事植物多样性保护与利用。E-mail:ptlgp@126.com。
更新日期/Last Update: 1900-01-01