摘要
张家口坝上地区是京津冀防护林建设的重点区域,防护林建设初见成效。近年来,现有防护林中的杨树防护林出现了林分树龄老化、防护功能退化等问题。本文从该地区杨树退化防护林的退化现状、退化原因、改造方式和政策建议等4个方面进行了阐述,旨在为该地区防护林后期建设提供参考。
Preliminary results of protection forest construction were achieved in Bashang district of Zhangjiakou city and this area is regarded as key section of Beijing-Tianjing-Hebei shelter forest planning. In recent years,some problems have appeared in poplar protection forest,for example,old-aged forest and degenerated functions. In the paper,four aspects including degenerated poplar protection forest situation,degeneration reason,transformation measure and countermeasure are discussed in order to pro-vide reference for follow-up protection forest construction.
出处
《林业资源管理》
北大核心
2016年第4期30-33,共4页
Forest Resources Management
基金
"东北内蒙古重点国有林区森林资源规划设计调查质量检查验收"项目
关键词
坝上地区
退化防护林
杨树
改造方式
政策建议
Bashang district
degenerated protection forest
poplar
transformation measure
countermeasure
