论混交林的生态和经济效益

• 作 者: 山东省混交林研究协作组 周长瑞
• 机 构: 山东农业大学
• 出 处: 山东林业科技
• 发表日期: 1984年04期
• 关键词: 混交林 单位面积蓄积量 纯林 材料分析 增产效果 山林场 杨树纯林 木材蓄积量 梢木 枯枝落叶层

从1980年以来,我们对省内的混交林进行了观察和研究,同时还搜集和翻译了大量国内外有关文献,它们都说明,合理的混交林具有显著的生态、经济效益。本文是结合省内的实际情况,就混交林的生态和经济效益的几个主要问题阐述一下我们的认识。 一、混交林具有较高的生长量和生产力 合理的混交林具有明显的增产效果,国内外均有报道。根据大量材料分析,单位面积蓄积量一般可提高20—70％,而增加1——2倍甚至3倍以上的情况也不少

Since 1980, we have observed and studied the mixed forest in the province, and collected and translated a large number of domestic and foreign literature, all of which show that the rational mixed forest has significant ecological and economic benefits. This article is based on the actual situation in the province, and elaborates on our understanding of several major issues concerning the ecological and economic benefits of mixed forests. First, the mixed forest has a higher growth and productivity of mixed forest has obvious yield increase effect, both at home and abroad have been reported. According to a large number of material analysis, the accumulation of volume per unit area can generally increase 20-70%, while increasing 1-2 times or even more than 3 times the case