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Soil labile organic carbon in different types of moso bamboo (Phyllostachys edulis) stands.

DU Man-yi1, FAN Shao-hui1**, QI Liang-hua1, LIU Guang-lu1, TANG Xiao-lu1, XIAO Fu-ming2   

  1. (1 International Centre for Bamboo and Rattan, Key Laboratory of Science and Technology of Bamboo and Rattan, State Forestry Administration, Beijing 100102, China;  2Jiangxi Academy of Forestry, Nanchang 330032, China)
  • Online:2013-03-10 Published:2013-03-10

Abstract: Taking the Phyllostachys edulis forest, P. edulis and broadleaved mixed forest, and P. edulis and Cunninghamia lanceolata mixed forest in Anfu County, Jiangxi Province of China as test objects, this paper studied the variations of soil labile organic carbon in different types of moso bamboo stands. The contents of soil total organic carbon (TOC) and readily oxidizable carbon (ROC) were the highest in P. edulis forest (13.1 and 2.15 g·kg-1, respectively), while the soil microbial biomass carbon (MBC) and hot waterextractable carbon (HWC) were the highest in P. edulis and C. lanceolata mixed forest (123.3 and 349.0 mg·kg-1, respectively). The soil labile organic carbon contents in the three types of moso bamboo stands all decreased with soil depth, indicating that surface soil layer could significantly enrich soil labile organic carbon. The soil TOC, MBC, HWC, and ROC contents were significantly correlated with each other (P<0.01), and the MBC, HWC, and ROC could be used to evaluate the contents of soil active labile organic carbon.