不同树种林分造林经济效益评价研究

The assessment of afforestation economic benefit of different species stands

以柳杉(Cryptomeria fortunei)、杉木(Cunninghamia lanceolata)和福建柏(Fokienia hodginsii)3个不同人工林分为研究对象,首先对3个林分蓄积量和出材量进行了分析讨论,接着应用净现值、内部收益率、收益成本比、土地期望值和净效益投资比等动态经济指标对3个林分的造林经济效果进行评价。结果表明,在3个林分中,杉木林分平均单株材积、蓄积量和经济材出材量最高,杉木林的NPV、IRR、LEV、B/C、N/K最大。

Based on the stands of Cryptomeria fortunei, Cunninghamia lanceolata and Fokienia hodginsii, the three stand volumes and timber outturn were discussed. Then the dynamic indexes of the three stands, NPV, IRR, B/C, LEV and N/K, were analyzed for assessing the afforestation effects. The results show the average individual volume, stand volume and economic timber outturn of C. lanceolata stand are the highest of all the three stands, also its NPV, IRR, LEV, B/C and N/K are the highest.