Effect of acid rain and water addition on decomposition of Schima superba and Pinus massoniana leaf litter
The effects of different pH water 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 of S.superba and P.massoniana leaf litter from mid-subtropical zone would all be obviously accelerated by adding distilled water. And to some extend, adding more than 200 mL water, S.superba leaves decomposed more quickly. The decomposition rate of P.massoniana needles also would be accelerated by adding 50 mL/20 g monthly, but didn′t the more water, the quicker decomposition, and when adding 200 mL water the decomposition would be restrained. Compared with CK, the effects of a certain quantities of distilled water were stronger than its pH to S.superba leaves. To P.massoniana needles the decomposition rates of adding different pH water were in the sequence of pH=3. 5>pH=6. 0>pH=2. 5>pH=3. 0>pH=4. 5>CK. P.massoniana needles decomposition could be more obviously accelerated when pH value of water was 3. 5, and was restrained when pH value of water was 3. 0 and 4. 5. P.massoniana needles decomposition was sensitive to pH variation.
国家科技期刊平台
NSTL
万方数据
维普
