Loess Area Highway Slope Protection Plant Adaptability

According to the factors of influencing on the plant's growth such as climate , site conditions , water , nutrient, quality of soil, the paper puts forward to the new sub-areas of plant adapting soil's ingredient in the loess area and offers the choice of the suited plant for different sub-areas.Based on this, from the view of the highway, the paper analyzes the different capability of suiting climate, soil's environment for different plant. Furthermore, ascertains the plant that has best adapting capability. Through calculating the volume of off-gas discharged by automobile, analyzing the polluted degree of the environment around the highway, chooses plant which is most powerful in resisting pollution.In consideration of effects on the road slope applied by plant, according to the improving ability of plant, chooses the plant with better ability in soil and water conservation on the road slope. Finally , associating with plant's zoology characteristic, economy value, devises the classes of plant with its ability in fitting road slope, finds out the sub-areas of road slope plant adapting soil's ingredient in the loess area, supplies the evidences in choosing road slope plant.