白桦是内蒙古大兴安岭林区的重要树种，资源丰富，它硬度适中、质白、无脂无味、纹理细腻，是制作地板砖的优质原料。随着成过熟林的减少，采伐和供应的木材中小径木的比例日益增加，目前该林区的许多企业均是利用白桦小径木生产地板砖。小径材因为生产年限短，内含物多，板材 Betula platyphylla is an important tree species in the forest of Daxingan Mountains, Inner Mongolia. It is rich in resources and has moderate hardness, white quality, no fat and tasteless texture and delicate texture. It is a good raw material for making floor tiles. As more mature forests are declining, the proportion of small-footprint timber harvested and supplied is growing, and many businesses in the area now utilize birch footpaths to produce floor tiles. Small diameter timber because of short production life, content and more plate