基于GIS技术的福安市茶园土壤环境质量调查与评价

Evaluation on environmental quality in the soil of tea garden in Fuan by GIS technique

摘要: 借助GPs、GIS技术对福安市茶园土壤的环境质量进行调查评价。结果表明:福安市土壤环境质量等级为优、良和不合格的茶园面积分别占调查总面积的67.9%、31.4%和0.7%。茶园土壤污染主要表现为不同程度的铅和铜污染,铅和铜含量超过无公害茶园土壤环境质量标准的样品数分别占调查总样品数的4.0%和1.3%,镉、铬含量均低于绿色食品产地的土壤污染物限值,汞、砷含量则均低于无公害茶园土壤环境质量标准。表明福安市茶园土壤环境质量总体较好。

Abstract: The environmental quality in the soil of tea garden in Fuan was investigated and evaluated by GPS and GIS.The results showed that the proportion of excellent, fine, unqualified tea garden were 67.9%, 31.4%, 0.7%.Soil pollution in tea garden mainly came from the contamination of Pb and Cu, and the proportion were 4.0%and 1.3%respectivdy.The Cd and Cr content in soil were lower than the pollution limit to green food producing area, and the content of Hg and As were within the criteria of non-polluted tea garden.Therefore, the environmental quality in the soil of tea garden in Fuan is fine in general.