Comparison between the chemical composition of bedrocks in the upper reaches and that of alluvial plain soils in the lower reaches of a drainage area;

These complex geology stratum areas cause serious problems of soil erosion, landslide, traffic safety and landscape destroyed.

In order to accelerate national land reconstruction,vegetation engineering of soil and water conservation often put adhesive into the project of sprayed work to make plant seed effective staying and growing,and there is the purpose of protecting slope land surface for soil erosion.

Two environment problems that disturbed China have been the sand storm climate in the spring of northern China and the soil deposition of Yellow River.

Response of salt accumulation in soil to groundwater changes at the oasis in the lower reaches of Sangong River, Xinjiang;

The types and causes of salt accumulation in soil in the Qaidam Basin were analyzed in this paper and extensive effects of the sink hazards on engineering construction were described.

Quantitative analysis of spatial distribution pattern of soil salt accumulation in plough layer and shallow groundwater in the Yellow River Delta;