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俗话说:“人怕抓脸,树怕剥皮”,这是十分正确的。树皮通常包括三个部分:表皮、皮层和韧皮部。表皮和皮层根据其作用称为保护组织,它具有保护树木体内各种组织的功能。韧皮部根据其作用称为输导组织,是树木的通道,输送光合作用产物供各部位生长发育。树皮遭到破坏的时候,树木内部的各种组织便得不到护卫,极易造成病害感染。特别是当韧皮部受到破坏时,往往会使树木死亡。即使树皮受害面积不大,也常会由于露出木质部,周围愈合时形成伤疤,影响木材质量。有的地方为了防止人畜破坏树皮,在树干上涂抹沥青,这种做法不但起不到保护树木的作用,反而会得到不良后果。因为树皮上有通
As the saying goes: “people are afraid of scratching the face, afraid of skin peeling,” which is very correct. The bark usually consists of three parts: the epidermis, the cortex and the phloem. The epidermis and cortex are called protective tissues according to their function and have the function of protecting various tissues in the tree. Phloem, according to its role as a guide tissue, is a channel of trees that carries photosynthetic products for growth and development in all parts. When the bark is damaged, the various tissues inside the tree can not be escorted and can easily cause disease infection. Trees are especially often killed when the phloem is damaged. Even if the bark damage is not large, often due to the exposed xylem, the formation of scars around the healing, the impact of wood quality. In some places, in order to prevent human beings and livestock from damaging the bark and spreading the bitumen on the trunk, this practice will not only fail to protect the trees, but will have adverse consequences. Because there is a pass on the bark