论文部分内容阅读
森林是大自然恩赐于人类的天然宝藏,人们称森林为“绿色的银行”。它是以木本植物为主体构成的生态系统,有着丰富的物质组成和复杂的层次结构,具有巨大的生物生产量和强大的物质与能量交流的能力。随着人们物质和精神生活水平的不断提高,在保持生态平衡的前提下,充分有效地综合开发利用林木的一切资源,向着全树利用的方向发展,是摆在林业科技工作者面前的一个重要课题。在我国的森林结构中,松树是分布极广、数量最多的主要用材林树种,尤其是马尾松,有
The forest is a natural treasure bestowed by mankind. People call the forest a “green bank.” It is an ecosystem composed mainly of woody plants, has a rich material composition and complex hierarchy, with a huge biological production capacity and a strong ability to exchange material and energy. With the constant improvement of people’s material and spiritual living standards, it is an important task for forestry scientists to fully, effectively and comprehensively exploit and utilize all the resources of trees and to make full use of trees under the premise of maintaining an ecological balance Question. In China’s forest structure, pine is the most widely distributed, the largest number of timber plantation species, especially the masson pine, there