Metting B. Biological surface features of semiarid lands and deserts[A]. Skujins J. Semiarid Lands and Deserts: Soil Resource and Reclamation[C]. New York: Marcel Dekker, 1991.257- 293.
[2]
Gupta V V S R, Germida J J. Distribution of microbial biomass and its activity in soil aggregate size classes as affected by cultivation[J]. Soil Biol Biochem, 1988, 20:777- 786.
[3]
Lynch J M. Interactions between biological processes, cultivation and soil structure[J].Plant Soil, 1984, 76:307- 318.
[4]
Lynch J M, Bragg E. Microorganisms and soil aggregate stability[J]. Advances in Soil Science, 1985, (2): 133- 171.
[5]
Greene R S B,Chartres C J.The effect of fire on the soil of the degraded semiarid woodland. I. Cryptogam cover and physical micromorphologi- cal properties[J]. Australian J Soil Res,1990:755- 777.
Leys J F.Cover levels to control soil and nutrient loss from wind erosion on sand plain country in central N. S. W.Proc. 7th Biennial Conference of the Aust. Rangel. Soc.[C]. Cobar.Oct. 1992. 84- 91.
[9]
Leys J F. Soil crusts, their effect on wind erosion[Z]. Soil Conservation service of N. S. W. Research Note 1/90.1990.
