广东江门市新会区土壤地球化学背景值研究

A STUDY ON THE SOIL GEOCHEMCAL BACKGROUND VALUE OF XINHUI REGION IN JIANGMEN,GUANGDONG

基于新会区城市地质调查获得的表层土壤数据资料,计算了该区土壤地球化学背景值,并对背景值特征及分布进行了探讨。结果表明:新会区表层土壤呈酸性背景;不同成土母质、不同土地利用类型土壤背景值差异明显。不同时期及不同地质作用下元素的赋存分布各异。花岗岩作为分布面积最广的成土母岩,其物质组成决定了本地的土壤组成和土壤质量。

According to the surface soil data of city geological survey in Xinhui region, we have calculated the soil geochemical background value this region and had a probe into the feature and distribution of it, which shows Xinhui surface soil is with the acid background.The soil background value of different soil-forming material, different land utilization type is very different.The element exist and distribution are very different in different age and different geological activity.The granite is the soil-forming rock with the most wide area, the material composition of it determines the soil composition and quality.