塞罕坝地区樟子松人工林生长规律及经济效益分析

通过对塞罕坝不同海拔高度的樟子松人工林取样调查，探讨了不同环境下林木胸径、树高的生长规律，并根据不同地区林分木材生产情况分析了塞罕坝地区不同海拔樟子松人工林生长的经济效益。结果表明，坝下地区樟子松人工林生长好于坝上地区，经济效益也高于坝上地区。

Analysis of Economic Benefits and Growth Law for Pinus sylvestris var.mongolica Litv.Plantations in Saihanba Area

This paper used sampling investigation methods,established the growth law of tree diameter and tree height for different altitude Pinus sylvestris var.mongolica Litv.,and analyzed economic benefits for dif-ferent altitude Pinus sylvestris var.mongolica Litv.plantations based on wood productions.Results show the growth of Pinus sylvestris var.mongolica plantations in higher altitude was better than that in lower altitude, at the same time,the economic benefits were higher than that in lower altitude.