西南桦中幼龄人工林抚育成效评价  

Effectiveness Evaluation of Plantation Tending on Young Betula alnoides Forest

作　　者：段洪瑞 卢靖 周长富 

机构地区：[1]德宏州林业局,云南芒市678400 [2]德宏州林科所,云南瑞丽678600 [3]湖南省农科院园艺研究所,湖南长沙410125

出　　处：《林业调查规划》2014年第3期97-101,共5页Forest Inventory and Planning

摘　　要：以林龄5 a、造林密度2 m×3 m的西南桦人工林作为研究对象,通过生长伐处理,连续3年对标准地林分生长、林分结构、林分健康、森林植被情况进行监测。结果表明,生长伐可有效提高目标树及辅助树单位面积材积,未降低林分的物种多样性,林分结构得到调整——乔木层、灌木层和草本层的物种存在一定的变化,各层次所占比例也发生了较大变化。To evaluate the effectiveness of accretion cutting on Betula alnoides plantations tending, a research was processed on young Betula alnoides plantations with age of 5 years old, and planting density of 2m × 3m. After three year constantly accretion cutting, a survey on forest stand of sample plot, stand structure, forest stand health, forest vegetation, etc. , has been carried out. Result showed that： accretion cutting could increase volume of timber per each unit area both Betula alnoides and other auxiliary trees; Accretion cutting would not change the biodiversity of plants in the plantations, but plantation structure has been changed, the plant species in shrub layer and herb layer also been changed a little, and the proportion of each level been changed greatly.

关 键 词：西南桦中幼龄人工林 抚育 生长伐 成效分析 生物多样性 

分 类 号：S792.159.1[农业科学—林木遗传育种] S753.5[农业科学—林学]