Soils under broad-leaved,masson pine,Chinese fir and bamboo forests in the area of Huzhou,Zhejiang were collected and analyzed in January 2000.Soil total organic carbon(TOC) under broad-leaved and bamboo forests were considerately higher than(P<0.01)those under masson pine and Chinese fir.There was no significant differences in microbial biomass carbon(MBC) in soils among various types of vegetation,however,the bamboo stands constituted a lower(P<0.05) proportion of MBC compared with broad-leaved forest,masson pine and Chinese fir were similar in MBC to TOC,indicating that intensive management in bamboo stand reduced the proportion of soil MBC in TOC.MBC in soils under broad-leaved forest,masson pine forest and Chinese fir forest had strong positive relationships with the corresponding TOCs,the correlation coefficients were respective 0.744 4,0.648 4 and 0.552 1.It was found that soil easily oxidizable carbon(EOC) in bamboo forest was much higher than those in the other 3 forests.The higher percentages of EOC were detected from soils under bamboo forest(52.40%) and Chinese fir forest(50.50%) compared with broad-leaved forest(48.90%) and masson pine forest(45.74%).Soil EOC for all 4 forests were closely correlated(P<0.01)with the correspondent TOCs.
