Effects of Land Use Types on Soil Quality in Hilly Area of Central Sichuan
Topsoil (0～20 cm) properties in different typical land use types (slope cropland, leveled cropland, bare land, walnut forest, conservation forest, orange forest) were analyzed in the hilly area of central Sichuan, and soil quality was evaluated by the comprehensive soil quality index calculated by principal component analysis.The results showed that soil physical and chemical properties were significantly different in different land use types.Soil water storage, soil porosity, average infiltration rate, total penetration before 90 min, total nitrogen, available nitrogen, organic matter, total phosphorus and available phosphorus in walnut forest, orange forest and conservation forest were all better than those in other land use types.Comprehensive soil quality integrated indexes were ranked as follows: walnut forest (0.324) ＞ orange forest (0.12) ＞ conservation forest (-0.01) ＞ leveled cropland (-0.021)＞slope cropland(-0.112)＞bare land (-0.288).Comprehensive soil quality index in walnut forest was the highest while it was the worst in bare land.Walnut forest was the best mode of the comprehensive management in small watershed.
land use typessoil qualityphysical propertieschemical properties
国家科技期刊平台
NSTL
万方数据
维普
