滇西北云南松人工林林分生物量研究

[目的]森林生物量和生产力是反映森林生态系统功能的基本参数,是研究森林碳平衡的重要手段,研究云南松林分生物量将为评估云南森林碳汇能力提供重要依据。[方法]通过在滇西北宁蒗县翠玉和红桥乡设置云南松样地,对样地进行了每木检尺和标准木生物量调查,建立了云南松单木各器官生物量与测树因子回归模型,并计算了云南松林分乔木层各器官生物量分配及乔木层、草本及灌木层生物量大小。[结果]云南松乔木层各器官的生物量分配为：树干〉树枝〉树根〉树叶,各器官生物量中,树叶生物量所占比例最小。另外,由于样地海拔较高,土层较薄,林分平均生物量和生产力相对较低。[结论]云南松生产力在平均胸径为15.3 cm时达到最高峰,随后开始下降。

Study on Artificial Forest Stand Biomass of Pinus yunnanensis faranch in Northwest Yunnan Province

[Objective]Forest biomass and productivity are two basic parametes for reflecting forest ecosystem functions,which are also the main measures of study on forest carbon balance.In this paper,study on forest stand biomass of Pinus yunnanensis faranch can provide basic data for evaluating forest carbon sink functions in Yunnan province.[Method]Sample plots of Pinus yunnanensis faranch were set at Cuiyu and Hongqiao township in Ninglang county in the northwest Yunnan province.Tree survey and the biomass survey of sample trees were done at plots.Regression models between forest survey factors and tree organ biomass of Pinus yunnanensis faranch were obtained based on survey data.The forest productivity and biomass of forest tree organ,herbal layer and shrub layer was calculated.[Result]The results show that,the distributing sequence of the organ biomass of arbor layer of Pinus yunnanensis faranch is: tree trunk>tree branch>tree root>tree leaves,and average forest stand biomass and productivity at these sample plots are low relatively because of the high latitude and thin soil layer.[Conclusion]Pinus yunnanensis faranch productivity will pick at 15.3 cm in diameter at breast height,and then fall again.