title: [Effects of stand structure regulation on soil labile organic carbon in Pinus elliottii plantation].
abstract: Taking 21-year-old Pinus elliottii pure plantation as the control, effects of enrichment planting with broadleaf trees (Liquidambar fornosana) after thinning the conifer trees (P. elliottii) on soil labile organic carbon of different plantations, including 3-year-old, 6-year-old, 9-year-old P. elliottii and 21-year-old P. elliottii-L. fornosana mixed plantations, were investigated. The results showed that the contents of soil dissolved organic carbon (DOC), readily oxidizable organic carbon (ROC), and microbial biomass carbon (MBC) significantly increased in the 6-year-old and 9-year-old plantations compared with those in the 21-year-old P. elliottii pure plantation. Soil labile organic carbon contents in the 21-year-old P. elliottii-L. fornosana mixed plantation increased significantly than those in 3-year-old, 6-year-old, 9-year-old stands, and the DOC, ROC and MBC contents increased by 113.1%, 53.3% and 54.6%, respectively, compared with those in the 21-year-old P. elliottii pure plantation. The results suggested that replanting with broadleaf trees are an effective measure to improve the soil ecological function in pure P. elliottii plantation.
authors.forename: Gui-Xia
authors.initials: GX
authors.lastname: Tan
authors.forename: Yuan-Qiu
authors.initials: YQ
authors.lastname: Liu
authors.forename: Lian-Lian
authors.initials: LL
authors.lastname: Li
authors.forename: Wu
authors.initials: W
authors.lastname: Liu
authors.forename: Yu-Ting
authors.initials: YT
authors.lastname: Zan
authors.forename: Bing-Nan
authors.initials: BN
authors.lastname: Huo
authors.forename: Mu-Jiao
authors.initials: MJ
authors.lastname: He
mesh_terms: D018533:Biomass; D002244:Carbon / Q000032:analysis*; D065928:Forests; D031317:Liquidambar; D028223:Pinus; D012987:Soil / Q000737:chemistry*; D012988:Soil Microbiology; D014197:Trees
chemical_list: D012987:Soil; D002244:Carbon