Soil hydrological function of main forest types in Tonglu’s ecological non-commercial forest

Base on the data of located ecological monitoring station of non-commerical forests in Tonglu county, Zhejiang province, soil hydrological function of the different forests was studied in the region. The results showed that the soil water storage capacity and permeability in different forests was significant higher than that of bared land. There was a significant difference in the soil water storage capacity and permeability among of different forest types. The deciduous broadleaved forest had the highest soil water storage capacity and permeability. The fitting effect of Horton infiltration model on soil infiltration process in each plot was good,which had good applicability. Correlation analysis of soil physical-chemical factor, root factor and soil permeability showed that the soil permeability was influenced by many factors, and in which soil non-capillary porosity was the primary controlling factor on early permeability rate and stable permeability rate. Based on the principal component analysis, hydrological function in order was deciduous broadleaved forestevergreen broadleaved forestChinese fir plantation(Cunninghamia Lanceolata) bamboo plantation(Phyllostachys heterocycla) Masson pine forest(Pinus massoniana)economic forestbared land.