By simulating the movement of groundwater in soil plough layer, the pollution characters of groundwater contaminated by salinity and heavy metals in the plough layer were researched under different water tables, different pollution levels and various texture soils.

Distribution and Characteristic of Topsoil Microelements in Shouguang City;

Influence of coal gangue pile on the concentration of heavy metals in farming soil;

Heavy metals contamination for cultivated soils,vegetables and rice in the vicinity of non-ferrous metals industry;

Study on potassium release rate and the relation of the rate to potassium availability in Cultivated soils;

Spatial autocorrelation analysis of heavy metals in cultivated soils in Beijing

Changing trend of organic matter and nutrient content in cultivated land of the Ningxia irrigation area of yellow river;

It has been 20 years since the Second Soil Census,in order to know the dynamic change of soil phosphorus,the data of soil phosphorus in cultivated land in Ankang from 1995 to 2003 is analyzed and the result is compared with the Second Soil Census.

Study on Cu content in cultivated soils and its influence factors in Guangxi;

Geostatistical methods were used in combination of GIS to analyze the spatial distribution characteristics of total K and available P in cultivated soils in Xinhui district,Guangdong Province,over 20 years from 1982 to 2003.

In this project, analytical data of 20 items from 367 of cultivated soil samples in Minhou county were selected, and principle component and gray relation analysis methods were used for revealing the relationship between soil properties and environmental factors.