1Anderson T.H., K.h.Domsch. Application of ecophysiological quotients (qCO2 and qO) on microbial biomass from soils of different cropping histories [J]. Soil Biology and Biochemistry, 1990, (22): 251-55.
2Duxnury J.M, S.V.Nkambuli. in: Defining soil quality for a sustainable environment [C]. 125-146. SSSA, Madison,Wisconsin USA, 1994.
3Michael J. Singer, Stephanie Ewing. Soil quality. In: interdisciplinary aspects of soil science [C], 1999.
4A.C.Kennedy, Rj. Papendick. Microbial characteristics of soil quality [J]. Journal of Soil and Water conservation, 1995, 50:243- 248.
5A. J. Gijsman, A. Oberson, D. K. Friesen, J. I. Thomas. Nutrient cycling through microbial biomass under rice-pasture rotations replacing native savanna [J]. Soil Biol. Biochem., 1997, 29(9/10): 1433-1441.
6Paul E.A, Clark F.E. Components of the soil biota [M]. Soil microbiology and biochemistry. London: Academic Press, 1996: 71-107.
7Dick R.P., Breakwill D., Turco R. Soil enzyme activities and biodiversity measurements as integrating biological indicators. In: Doran J.W. and Jones A.J. Editors, Handbook of methods for Assessment of soil quality [M], SSSA, Madison USA, 1996:247-242.
