盐边县巴拉河小流域区域土壤环境质量调查分析

为明确巴拉河小流域违法违规企业拆除后,区域土壤环境是否存在污染、污染种类及污染程度。对巴拉河流域长17km河沿岸1000m范围内、以及涉及该区域内的工矿企业厂界500m以内的区域的土壤环境进行调查,整体采取以250m×250m的网格进行布点,共设470个土壤点位,采集509件土壤样品、25件平行样。根据调查取样与实验室分析检测结果,参考国内现有评价标准和评价方法,分析判断调查区域实际污染状况与程度,以避免污染场地土壤直接开发利用带来环境风险,为下一步开展违法违规用地区域土壤恢复和利用提供科学依据。

Investigation and Analysis on Soil Environmental Quality in the Small Watershed of Bala River in YanBian County

In order to clarify whether the regional soil environment has been polluted,and the types and the degeree of pollution after the removal of illegal enterprises in the small watershed of Bala River.The soil environment of the Bala River Basin was investigated within the range of 1000m along the 17km-long river bank of the Bala River Basin,and within 500m of the boundary of industrial and mining enterprises in the area.A grid of 250m × 250m was adopted for spot distribution,where 470 soil points were set,and 509 soil samples and 25 parallel samples were collected.According to the results of survey sampling and laboratory analysis,the actual pollution situation and degree of the investigated area were analyzed and judged by referring to the existing evaluation standards and evaluation methods in China,so as to avoid the environmental risks caused by the direct development and utilization of contaminated site soil,and to provide a scientific basis for the next step of soil restoration and utilization.