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作 者 ：丁贵杰 严仁发 齐新民

期 刊 ：林业科学 1994年 30卷 6期 页码：506-512

关键词：马尾松；种源；造林效果；经济分析；

Keywords:Pinus massoniana Lamb., Provenance, Planting result, Economic analysis,

摘 要 ：分不同地位指数级,对比分析了广西容县种源和贵州龙里种源马尾松人工林的林分结构和生长效果的差异。以现实林分蓄积量为基础,结合材种出材量(率)预测模型和研究区的技术经济指标,用动态分析方法进行了经济效果评价。结果表明,在贵州引种广西容县种源是可行的,在相同立地条件,容县种源林分生产力高于贵州龙里种源,树高、胸径、蓄积量分别高15.0—21.7%、5.4—19.1%和28—40%。经济效益、净现值高38.96—61.28%和69.78—91.76%。两种源单株材积随林龄加大,差异增大,但增长百分比随之减少。经济效益、净现值、益本比均随地位指数的增大而加大。

Abstract:The provenance differences of Pinus massoniana Lamb. Between the Rongxian, in Guangxi Province and the Longli in Guizhou Province in stand structure and growth effect are analysed comparatively.Based on the stand growing stock volume at present, combining the predict model of timber assortment yield and technically economic target in the studing region, the economic effcts are evaluated by a dynamic analysis method. The results show that the species introduced from Rongxian County is feasible, the stand productivity of the Rongxoan provenance is higher than that of the Longli provenance under the same site conditions, among which the height, DBH, and growing stock are 15.0—21.7%, 5.4-19.1% and 28-40% higher respectively,the economic benefit and net present value (NPV) increase 38.96-61.28% and 69.78-91.76% respectively. The differences in single tree timber volume enhance with the increase of stand ages, but the increasing percentage decrease.With the increment of site index, the economic benefit, NPV,and benefitcost ratio increase.

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