一、造林树种选择的意义和原则人工林是人们按照预定的培育目标通过营林活动而获得的劳动产物。在这一过程中,树种本身的内在特性,环境条件和人为作用应有机结合,三者缺一不可。人为作用是主要的,但它必须建立在充分认识和掌握客观自然规律的基础上,实行科学造林,才 First, the meaning and principles of afforestation tree species Plantation is the product of labor that people obtain through afforestation activities according to the predetermined cultivation goal. In this process, the inherent characteristics of tree species, environmental conditions and human interaction should be organically integrated, the three indispensable. Artificial action is the main, but it must be based on the full understanding and grasp of objective laws of nature, based on the practice of afforestation, only