8[1]Aitken RL, Moody PW. The effect of valence and ionic strength on the measurement of pH buffer capacity[J].Aust J Soil Res,1994, 32: 975- 984.
9[2]Binkley D, Driscoll CT, Allen HL, et al. Acidic Deposition and Forest Soils. Springer- verlag: New York, 1989. 1- 12, 65- 85.
10[3]Coventry DR, Farhoodi A, Xu RK. 2001. Managing soil acidification through crop rotations in southern Australia[A]. In: Rengel Z ed. Handbook of Soil Acidity[C].Marcel Dekker, Inc.: New York, 2002 (in print).