To study the impacts of pipeline construction on eco-environment in the middle-low mountainous area,the quantitative prediction is made for the changes of landuse,agricultural production,the area and biomass of vegetation,soil erosion,and ecological system integrity in the Daba Mountains by the Sichuan—Shaanxi natural gas pipeline construction.

The low mountains and hills in southeast China.

Based on the foundmental princrples of runoff agriculture,soil and water conservation,following harness and the water balance and regularity of precipitation runoff in slope land,this paper deals with the execellent designing techniques,comprehensive benefits to the rainfall and fertilizer harvest terrace in hilly land of Yan Liao.

Analylsis of biodiversity in different deposition model of water and soil conservation forest in low-mountain and rainfall areas of Sichuan Basin.;