为寻求日本森林理想状态,1985年9月,在熊本市召开“森林与人类——21世纪森林展望”座谈会,提出要“用100年、200年的主伐龄培育出能生产优良木材且具有魅力的森林——由大树混交的多目的森林”。从现有森林来说,进行合理的经营首先要着眼于覆盖在日本的许许多多山山岭岭上的30—40年生中幼龄林。因为从这些树木的生命周期来看,正处于青年期,尚未显示出真正的 In order to seek the ideal state of Japanese forests, in September 1985, a symposium titled “Forests and Mankind - Prospects for the 21st Century Forests” was held in Kumamoto City. The symposium proposed that “100 years and 200 years of main cutting ages should be used to produce fine woods with Charming Forest - Multi-Purpose Forest Mixed by Big Trees ”. From the existing forest, proper management begins with a focus on 30-40-year-old young and middle-aged forests covering many mountainous ranges in Japan. Because of the life cycle of these trees, they are in their infancy and have not shown any real