摘要
:对大青山天然白桦次生林进行抚育间伐和封山育林措施 ,通过调查分析得出 :大青山白桦次生林的经营技术要以抚育间伐为主 ,结合封育保护措施 ,间伐年龄在 40— 5 0年 ,间伐强度要保留郁闭度 0 .7左右 ,间伐时间在 1 2月至 1月之间。
Based on investigation and analysis to the secondary forest of the natural White Birch in Daqingshan Mt.which have been tended with closing off the afforested hills,the result shows that the selection cutting of forest management is the main technology for the secondary forest of White Birch in Daqingshan Mt.The age of the selection cutting is between 40 and 50 years,the intensity of it should remain the canopy density to be about 0 7,and the time of it should be from December to January next year.
出处
《干旱区资源与环境》
CSSCI
CSCD
2000年第1期90-94,共5页
Journal of Arid Land Resources and Environment
基金
内蒙古自治区科委 85攻关基金项目!( 95 -0 2 -3 8)
关键词
次生林
抚育间伐
封山育林
白桦
大青山
Secondary forest,selection cutting of forest management,closing off the afforested hills.
