论文部分内容阅读
回顾了农林业发展过程。介绍了Nair 以农林业系统目的为导向的多级分类方案,以及国外农林业系统的主要功能。
Reviewed the development of agriculture and forestry. Introduced Nair’s multi-level classification scheme directed by the purpose of agriculture and forestry system and the main functions of the foreign agroforestry system.