Soil Physical Properties and Nutrient Properties under Different UtilizationStyles and Slope Position

This paper discussed the soil physical properties and nutrient characteristics under different utilization styles and slope position in western hilly land of Sichuan Basin. The results showed that among three landscape positions (upper slope, middle slope, lower slope), the lower slope had better soil physical properties than upper and middle slope. Simultaneously, reforested land improved soil physical properties more obviously compared to farmland and waste land. Soil nutrient properties showed: Under various soil utilizations, the content of soil organic matter, nitrogen and cation exchange capacity was highest in reforested land, and it had notable difference compared to farmland and waste land. The correlation analysis indicated that the content differences of soil organic matter, total nitrogen and alkai-hydrolyzable nitrogen were significantly positively correlative. The content of soil nutrient was higher in lower slope compared to upper and middle slope. But only the content of CEC was the best significant difference among three slope positions, the content of CEC was positively correlative with the content of soil clay. The results showed that soil physical properties and nutrient properties largely depended on the land utilization and landscape on slope.