试论“三北”生态经济型防护林体系

本文介绍了“三北”防护林体系工程的概要、建设指导思想和技术路线,从理论上较深入地探讨了林业观念更新的意义及其基础。从而,提出“生态经济型防护林体系”的学术概念,以及它同建立区域性人工生态系统的相互关系,并结合“三北”黄土高原昕水河流域生态经济型防护林体系示范区的特点进行分析,探讨丘陵山地条件下,生态经济型防护林体系的技术内涵、组成及其生态经济特点。最后,作者提出了由“三北”防护林工程的实践对我国如何建设好其它防护林工程的几点启示。

On establishment of ecology-economical type of the "Threc North" protection forest system

This paper outlined the "Threc, North" protection forest system, discribed the guiding ecology and economical line in establishment of shelter forest system, and further discussed the significance and foundation of renewing the concept of "froestry". The academic concept of ecology-economical type of shelter forest system (ESSFS) and its relation with the formation of regional artificial ecosystem are introduced. Taking a demonstration area of ESSFSin Xinshuihe basin on loess plateau as an example, the paper discussed the technical connotation, composition and ecology-eco nomical characteristics of ESSFSin hilly mountain areas. The author summarized some points of enlightenment from the practice of shelter forest project on the better establishment of shelter forest engineering in other regions.