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作 者:孙丽[1] 濮励杰[1] 朱明[1] 涂小松[1] 王梅农[2] 张导 段英华[2]
机构地区:[1]南京大学地理与海洋科学学院,江苏南京210093 [2]苏州市土壤肥料站,江苏苏州215006
出 处:《生态与农村环境学报》2008年第2期88-91,共4页Journal of Ecology and Rural Environment
基 金:江苏省自然科学基金(BK2005080)
摘 要:对太湖西山碧螺春茶园典型坡地土壤重金属Cd、Hg、As、Pb、C r和Cu含量进行测定,探讨坡度、土地利用等自然地理特征对土壤重金属元素分布的影响,并对照NY 5199—2002有机茶产地环境条件中给出的有机茶园土壤环境质量标准和GB 15618—1995土壤环境质量二级标准对茶园土壤重金属污染状况进行分析与评价。结果表明,除Hg以外,其他重金属元素均达到有机茶园土壤环境质量标准。以有机茶园土壤环境质量标准为评价依据,碧螺春茶园土壤重金属综合污染指数为0.78,表明其重金属污染水平为尚清洁,污染等级为警戒级,主要污染物为Hg。Topsoil samples taken from the Biluochun tea plantations in Xishan of Tai Lake were analyzed for contents and distribution of heavy metals ( Cd, Hg, As, Pb, Cr and Cu) in the soil. Effects of geomorphological characters, such as slope and land use, on the distribu- tion of soil heavy metals were also discussed. Soil quality was evaluated by the standard ( NY 5199 - 2002) for soil environmental quality of organic tea plantations and the Criteria of Grade II of the National Standards for Soil Environmental Quality ( GB 15618 - 1995 ). It was found that all the heavy metals in the soil, except Hg, were in compliance with the standards in concentration, and that their integrated pollution index was 0.78, suggesting that the soil is still clean and of the Alert Grade in pollution, and that its major pollutant is Hg.
分 类 号:X53[环境科学与工程—环境工程] X825
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