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1 前言中德合作云南省造林项目计划用5年的时问在昭通地区和曲靖地区6县、市营造20261.8hm~2的防护林,包括用材型防护林、薪炭型防护林和经济型防护林。这一工程造林项目完成以后的效益如何,是世人十分关注的问题。本研究依据中国国内有关林业的定量分析的公认理论数据和权威试验数据,确定该项目实施中影响综合效益的参数(状
1 Foreword Sino-German Cooperation in Afforestation Project in Yunnan Province It is planned to build 20,281.8hm ~ 2 shelterbelt in Zhaotong and Qujing districts and counties in 5 years, including timber-type shelter belts, firewood-type shelter belts and economical shelterbelts. How effective is the completion of this afforestation project? It is a matter of great concern to the world. Based on the generally accepted theoretical data and authoritative experimental data about the quantitative analysis of forestry in China, this study determined the parameters influencing the comprehensive benefits in the implementation of the project