Effect of mixed operating in Moso bamboo(Phyllostachys edulis) forest on soil labile carbon pool and carbon management index

To estimate the effect of different mixed forest patterns on soil labile organic matter pool and carbon management index(CMI),this research was conducted in Phyllostachys edulis pure forest(PE),Ph.edulis and broad-leaved tree mixed forest(PBM),Ph.edulis and Cunninghamia lanceolata mixed forest(PCM) in Anfu county,Jiangxi province.The result showed that:(1) Soil labile organic matter pool was in order of PE(14.56 t/hm2)PCM(12.33 t/ hm2)PBM(10.42 t/hm2),and the difference was significant.(2) Total organic carbon(c T),labile organic carbon(c L),no-labile organic carbon(c NL),carbon pool index(CPI) decreased after mixed operating,values of lability of carbon(L) and labile index(LI) were the highest in PCM,while value of coefficient of oxidation stability(k OS) was the highest in PBM.Taking CMI of PE as reference,CMI value among the different bamboo and Cunninghamia lanceolata mixed patterns was in order of PCM(106.96)PE(100.00)PBM(71.06).(3) In this research,pattern of PCM was functioned as improving soil fertility and was in good management situation,which would be good for forest growth.