Effects of root system and litter of Chinese fir on soil microbial properties
A simulation test was conducted to study the effects of the root system and litter of Chinese fir(Cunninghamia lancceolata)on soil microbial properties.After the amendment with C.lancceolata root system,the soil microbial biomass C,basal respiration,total organic C,and microbial quotient increased significantly(P＜0.05),while soil metabolic quotient(qCO_2),presented an opposite trend.In the treatment amended with C.lancceolata litter,the soil basal respiration and qCO_2 decreased significantly(P＜0.05),whereas soil microbial biomass C,total organic C,and microbial quotient had less change.A significant interaction between C.lancceolata root system and litter was observed on soil basal respiration and qCO_2.The qCO_2 had significant positive correlations with soil total organic C(R~2=0.209)and dissolved organic C(R~2=0.325),suggesting that the C use efficiency of soil microbes decreased with increasing soil organic C content.Comparing with litter,the root system of C.lancceolata played more important roles in soil ecological processes.
Chinese firroot systemlittermicrobial biomass carbonsoil metabolic quotientsoil organic C
国家科技期刊平台
NSTL
万方数据
维普
