摘要
采用地积累指数法、潜在生态危害指数法并结合广西北部湾土壤背景值和国家土壤重金属评价标准,对钦州市小董镇西陵村、榃头村两个生态农业园的As、Hg、Cd、Pb、Cr含量进行评价。结果表明:除Pb外,榃头村生态蔬菜园As、Hg、Cd、Cr的平均含量均高于西陵村生态葡萄园,尤其是两生态园的As、Cr含量差异显著。地积累指数法评价结果显示:榃头村生态蔬菜园Cr发生了富集,存在轻到中等程度的Cr污染。潜在生态危害指数法评价结果显示:整个研究区的这五种重金属对土壤环境存在轻微的生态危害,西陵村生态葡萄园受到的这五种土壤重金属的潜在生态风险比榃头村生态蔬菜园小。
Based on the background value of soil in Guangxi Beibu Gulf area and national soil heavy metal assessment , a soil assessment of As ,Hg,Cd,Pb,Cr contents was made in two agricultural park in Xiling village and Tantou village of Xiaodong town in Qinzhou city by approaches of geoaccumulation index, potential ecological risk index. The results show that the average con- tents of As ,Hg,Cd,Cr in the soil of Tantou agriculture park are higher than those in the soil of Xiling agricultural park. Among which, the contents of As, Cr are greatly different in the soil of the two parks. According to the geoaccumulation index, Cr en- richment was identified in Tantou park, which causes mild-medium Cr contamination. And the result of potential ecological risk index showed that mild ecologicM contamination of the five heavy metals are found in the soil of the two parks, among which, Xil- ing park sm^fers a smaller ecological risk than Tantou park.
出处
《钦州学院学报》
2017年第5期55-59,共5页
Journal of Qinzhou University
基金
校级大学生创新项目:基于乡村旅游下有机蔬菜的农艺措施研究--以钦州市小董镇为例(201511607129)
国家高技术研究发展计划(863)课题:农业种植园区肥料与农药污染土壤修复技术及示范(2012AA06A204)
关键词
钦州市小董镇
生态农业园
土壤重金属
xiaodong town of qinzhou
eco-agricultural garden
soil heavy metal
