Land Quality Geochemical Evaluation In The Typical Area,Zhenjiang And Yangzhou

This paper is aimed at land environmental geological problems of Zhenjiang-Yangzhou region to research a project about land environment geology in typical areas.Through sampling the surface soil,analyzing element distribution characteristics of soil nutrient and environment,we make the evaluation of land quality.The results show that the N,P,K content of nutrient of workspace of farmland soil is the overall average rich and the nutrient elements of workspace of farmland soil is unbalanced about spatial distribution.Heavy metals elements is also unbalanced on distribution and classification of heavy metal environment of agricultural soil is given priority to with clean.The soil in the work area was predominantly alkaline,with the area proportion of 92.86%.The acid soil was mainly distributed in the north of the work area along the Yangtze River and the southeast corner of Touqiao Town near the the Yangtze River and its branching channel.Soil acidification is an important factor for the activation of harmful heavy metals in soil and the pH 7.5 of soil is the rapid acidification point.The 93.69% of workspace are of no pollution and light polluted soil are mainly distributed in the Touqiao town;Moderately contaminated soil are mainly distributed in the northwest corner of Lidian town,near the branching channel;Soil nutrient level is classified to abundant;The 51% of farmland soil is classified to quality.And the results preliminarily identificates the typical areas of the status of land and environmental geology.