1. Agriochemistry Commission, Soil Science Society of China (Eds.), 1983. Conventional Methods for Soil and Plant Analyses. Science Press, Beijing (in Chinese).
2. Biomass and nutrient distribution in aspen, pine, and spruce stands on the same soil type in Minnesota;Alban;Can. J. For. Res.,1978
3. Armson, K.A., 1977. Forest Soils: Properties and Processes. Univ. of Toronto Press, Toronto.
4. Soil enzyme activity and soil fertility in juvenile Chinese-fir plantation;Chen;For. Res.,1993
5. Chen, H.J., Li, C.H., 1996. Soil phosphatase activity and P fractions in the rhizosphere of Chinese-fir. In: Proc. of IUFRO-Conference Effects of Environmental Factors on Tree and Stand Growth. Dresden, Germany, pp. 311–317.