桦树对土壤要求不苛,耐脊薄,抗旱抗冻,病虫害也少,抗逆性比较强。我们经十年的育苗和造林实践,证明它是张家口坝上高寒地区的适生树种,而且生长也较快,造林15年左右可间伐椽材,只要抚育管理跟上,预计25年左右能达到檩材的标准。桦树木材纹理通直,结构细致,且较坚硬,是群众喜爱的建筑用材和小农具材。所以在缺林少树而又适于桦树生长的坝上高寒地区,可把桦树列入主要造林树种。特别是桦树枝叶茂密,也是营造防护林带的适宜树种。 Birch on the soil is not demanding, resistant to ridges, drought and frost, pests and diseases are less resistant than strong. After ten years of nursery and afforestation practices, it proves that it is a suitable tree species in the alpine region of Zhangjiakou dam, and grows fast. Afforestation can be thinned for about 15 years. As long as tending and management are followed, it is estimated that it will reach about 25 years檩 material standards. Birch wood texture straight, detailed structure, and more rigid, is the favorite building materials and smallholder material. Therefore, birch trees can be included in the main afforestation species in the dam-alpine region where there is a shortage of trees and suitable for birch growth. Especially birch branches and lush, but also to create a suitable shelterbelts species.