任豆树综合利用研究

森林滥伐现象已使世界森林遭受愈来愈严重的威胁 ,构成世界最大的陆生生态系统的北方森林在急剧消失 ,占世界森林总量 1 3左右的热带雨林更是以每年近 2× 1 0 7ｈｍ2 的砍伐速度激减。从我国目前生态环境状况分析 ,由于天然林资源遭受破坏 ,已经引发了严重的生态环境问题 :如水土流失加重、土地荒漠化加剧、水资源短缺、生物栖息环境恶化等。据美国《科学》杂志的一篇文章报道 ,目前全球每年流失的表土总量达 7 50× 1 0 10 ｔ,其中中国为 5 0× 1 0 9ｔ,给人类社会的生存和发展带来严重威胁 (陈利秋等 ,1 998)。为此国家从 1 998年启动重…

STUDY OF ZENIA INSIGNIS CHUN. COMPREHENSIVE UTILIZATION

The research about the properties and utilization of fast growing trees have caused wide public concern with the background of the severe shortage of forest and the urgent need for its protection.According to the recent reports,we have only exploited few kind of fast growing trees, and utilize grade and utilization ratio were lower,so that in this paper,based on analyzing growth speciality and tiny structure and fibre shape and chemical composition and physics properties of fast growing trees species Zenia insignis Chun.. The results showed that it is feasible to use Zenia insignis Chun, as raw material to manufacture flame retardant MDF and flame retardant PB and flame retardant LVL,its physical and mechanical properties,surface physical and chemical properties and flame retarding properties are accord to the correlative standard.Zenia insignis Chun.popularize planting and comprehensive utilization exploitation that is of especial importance to industry.