人们常说：“人怕伤心、树怕剥皮。”随着科学技术的发展，人们都巧用树木“伤皮”的办法，为林业尤其是经济林的增产增收发挥着重要的作用。一、“伤皮”增收。采取“环剥”收皮、能保存树种资源，提高皮用林的产量和质量。如杜仲等皮用药材树种，过去采用砍树取皮，现在用“ People often say: “People are afraid of being sad, afraid of skin peeling.” With the development of science and technology, people use the method of “injuring the skin” of trees to play an important role in increasing the output of forestry, especially in economic forests. First, “injured skin” income. Take “girdling” to close the skin, can save tree species resources, improve the output and quality of the forest. Such as Eucommia and other medicinal herbs skin, the past used to cut the tree to take the skin, now with "