Abstract:

Abstract: The effect of different form nitrogen addition on decomposition of Schima superba and Pinus massoniana leaf litter from mid-subtropical zone were studied using a self-designed lysimeter. The results showed that: decomposition rates would all be obviously accelerated by NH4Cl and NaNO3 adding, and added more -N and -N liquor, S. superba leaves decompose more quickly. But compared with the effects of same quantity of distilled water, the accelerating effects of -N and -N could very significantly appear till added 300 ml liquor. To some extend the decomposition rates of P. massoniana needles also would be accelerated by adding NH4Cl and NaNO3, but compared with CK the effects of a certain quantities of distilled water were stronger than -N and -N, and in the three treatments olny when add 200 ml NaNO3 liquor could more obviously accelerated P. massoniana needles decomposition rates than distilled water. On the wholel the effects of addition N on P. massoniana needles decompose were not as stronger as on S. superba leaves.