Simulation of the effects of warming on the dynamics of litter decomposition in a Daqingshan oil pine plantations
The effects of climate warming on the litter decomposition of Pinus tabuliformis plantation in Daqingshan,were investigated via a simulation of climate warming.The open top chamber and in-situ de-composition bag method were applied in the experiment.Control(CK)and increasing temperature treat-ments(W)were set up.The results showed that after decomposition in the growing season,the average loss of litter mass residue rate(R)in W was 21.1%of the initial mass,while that in CK was 13.7%;W sig-nificantly decreased R(N)of litter(in terms of total nitrogen),but significantly increased R(P)in terms of total phosphorus.R(N)of litter treated with W and CK were 80.05%and 94.37%,respectively,R(P)were 104.33%and 96.42%,respectively;compared with the CK,c(C)/c(N)、c(C)/c(P)、c(lignin C)/c(N)were significantly different under W;W significantly increased the litter decomposition coefficient,and the de-composition constant of W and CK treatment were 0.019 and 0.011,respectively.W accelerated the de-composition of litter in Pinus tabuliformis plantation to a certain extent.
simulated warmingopen top chamberDaqingshanoil pine plantationlitter decomposition
万方数据
维普
