造林密度对杂种落叶松生物量的影响

以杂种落叶松试验林为研究对象,根据实测的32株标准木各组分的生物量,建立不同造林密度下杂种落叶松单株林木各组分与林木胸径的回归方程W=aDb,并由此推算出4种造林密度下杂种落叶松每公顷生物量。结果表明:造林密度对杂种落叶松林分总生物量影响不大,而对单株生物量及其各组分生物量占地上总生物量的百分比均有显著影响。因此,应根据不同的生产目标,选取适当的造林密度。

Influence of Afforestation Density on the Biomass of Hybrid Larch

Based on the experimental forest of Hybrid larch, the biomass of Hybrid larch was calculated by the regression equation W = aD^b of different afforestation densities established according by the biomass of the various components of the 32 standard woods. The results showed that, there was not significant influence of afforestation density on the total biomass aboveground of Hybrid Larch, and significant influence on the individual biomass and its distribution. So we can select proper afforestation density according to the different production goals.