Analysis on the Land Suitability Evaluation in Heituogou Valley;

Research of Nutrient Loss from Heimiaogou Watershed in Danjiang Reservoir Area Based on GIS;

In this paper,AnnAGNPS model,in which GIS being integrated,was used to quantitatively simulate pollutant loads of Heigou watershed in Danjiang reservoir during the whole periods of 2003.

The landslides in the Heimaqu gully river basin are rather developed, its density amounted to 9.

Influence of Vegetation Types on Soil Organic C at Yangou Catchment in the Loess Hilly-gully Region;

Sediment sources analysis of the Yangou watershed under a certain rainstorm event in the Hilly-gully Region of Loess Plateau;

Based on field survey and laboratory analysis,by using multi-linear stepwise regression and geographic information system(GIS),the paper studied the spatial distribution of surface soil(0-20 cm),organic C density in the Yangou watershed of loess hilly-gully region and its relationships with land use,landform,and so on.

According to the research on the natural and artificial communities by five indexes of species diversity in Yangou watershed, this article discussed the relationship between re-vegetation ways (natural restoration, artificial restoration, natural and artificial restoration) and species diversity.