The soil physical composition,organic matter,total nitrogen,total phosphorus, total potassium and pH of Salix psammophila ccheckerboard and contrast sand of Dalate county were investigated in 2005,the effects of Salix psammophila checkerboard on physical and chemical characteristics of sandy soil were analyzed.

It has been long held that the buried soil under sand dunes on the major sand lands in northern China formed due to the climatic changes of the Holocene, which could be used as a proxy record to reconstruct the past climate in warm-humid periods.

On antierodibility of hilly soils in Zhejiang Province:;

Grassland degradation, land salinization and soil desertification(DSD) are typical ecoenvironmental problems in the west of Jilin Province.