内蒙古白桦次生林改造中树种选择的探讨  

Discussion on Tree Species Selection in Inner Mongolia White Birch Secondary Forest Reform

作　　者：郭振明 

机构地区：[1]内蒙古乌兰察布市林业局造林站,内蒙古乌兰察布012000

出　　处：《黑龙江农业科学》2013年第3期92-94,共3页Heilongjiang Agricultural Sciences

摘　　要：为了提高国营林场森林蓄积量,对天然白桦次生林进行30多年的改造,在国家已审批可改造林地,对不同坡向选择栽植华北落叶松、油松、樟子松等针叶树,与白桦天然萌芽更新形成针阔混交林。结果表明:在阴坡、半阴坡混交林中落叶松生长最快,樟子松次之;而在阳坡、半阳坡混交林中,油松、樟子松生长旺盛。随着林龄的增长,森林蓄积量稳定增长。实践证明科学合理改造北方林区天然次生林,可达到森林经营的永续利用和可持续发展目标。In order to improve the volume of stateowned forest farm,the reconstruction of white birches sec ondary forest tree for 30 years was implemented. Our country has approved farm for planting larch, planting Chinese pine,Mongolica and other conifer according to different slope and aspect, together with natural white birch to form theropencedrymion. The result showed that：in the shade and half shade slope mixed forest,larch grew fastest and followed by Mongolica, while in sunny slope and half sunny slope mixed forest, Pinus tabulae formis and Mongoliea grew vigorously. With the growth of the age of tree,forest＇s volume grew stably. Prac tice proved that scientific and reasonable transformation of norihern natural secondary forest,could achieve the sustainable utilization of forest management and sustainable development goals.

关 键 词：白桦次生林 改造 树种选择 

分 类 号：S792.153[农业科学—林木遗传育种]