GEOCHEMICAL CHARACTERISTICS OF THE SOIL IN CHANGCHUN ECONOMIC ZONE, JILIN PROVINCE

The Changchun Economic Zone can be divided into two landform areas:low hills and piedmont terrace plain. The natural landscape environmental elements show a regular gradual change from east to west, with the soil also changing from dark brown soil, albic soil, black soil to chernozem in turn. The results of analysis of a large number of soil geochemical data show that the regional landscape environment controls the regional soil geochemistry and soil element distribution, while the geotectonic units restrict the distribution of elements in soil parent. The element distribution largely inherits the geochemical characteristics of parent elements, with certain variances in different landscape environments. Moreover, human activities have great influence on soil element distribution, soil properties and fertility, which needs much attention.