期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
作为热带森林保护手段的天然林管理评估
1
作者 JohnW.Reid Richard E.Rice 石培礼 《人类环境杂志》 1997年第6期374-378,共5页
在过去几年间,人们在协调保护与发展议程方面已作了许多努力,很多保护机构信奉的观点是从天然林中精心利用木材资源才是可行的保护对策的组成部分。遗憾的是,"天然林管理"的投资在财政上缺乏吸引力,政府通常不愿意或难以督促... 在过去几年间,人们在协调保护与发展议程方面已作了许多努力,很多保护机构信奉的观点是从天然林中精心利用木材资源才是可行的保护对策的组成部分。遗憾的是,"天然林管理"的投资在财政上缺乏吸引力,政府通常不愿意或难以督促采伐者进行这种投资。即使在这些问题能够解决的地方,保护的倡议仍需仔细地考虑天然林管理是否可能比其它方法导致更少的损害。这个问题的答案在于在缺乏林业计划的情况下会有什么样的人类干扰发生:是少还是没有,是不加控制的采伐还是农垦毁林,只有在后面情况下利用天然林管理无疑才会体现出环境的改善。最后必须对林业是否是达到自然保护目标的一种费用低廉的方式做出评估。在分析了上述因素后我们作出了一些特定的环境中天然林管理是一个有希望的保护对策的结论。 展开更多
关键词 热带森林保护 天然林管理 管理
下载PDF
Preference for Wood and Plastic-Based Ceiling Panels by Homeowners in Ghana: Implications for Tropical Forests Conservation and Prospects for the Local Wood Industry
2
作者 Martin Amoah Peter Kessels Dadzie: 《Journal of Environmental Science and Engineering(A)》 2013年第10期637-650,共14页
This study investigated the preference for wood and plastic-based ceiling panels by homeowners in Ghana, the implications for the conservation of tropical forests and prospects for the local wood processing industry. ... This study investigated the preference for wood and plastic-based ceiling panels by homeowners in Ghana, the implications for the conservation of tropical forests and prospects for the local wood processing industry. Questionnaire was used to solicit information from 758 homeowners sampled from three cities in Ghana. The results showed that even though wood-based panels continue to enjoy strong patronage among home owners plastic-based panels appear to be the future material for ceiling. The findings suggest that, by 2030, homeowners in Ghana will use more plastic-based ceiling panels than wood-based panels, ceteris paribus. Attractiveness, durability and pleasantness are the key attributes of plastics that influence homeowners' decision to patronize the material. Additionally, the concern about the depletion of forest resources in Ghana has shaped homeowners decision to patronize plastic-based ceiling panels. While the shift to the use of plastic-based panels has the potential to moderate the consumption levels of timber and therefore could contribute to the conservation of tropical forests, it has a negative implication on the development of local wood processing industry. One area where manufacturers of wood products such as wood panels can explore in order to increase or maintain the market share of wood-based panel products is sourcing raw timber from certified forests. 展开更多
关键词 Construction and building materials greenhouse gases homeowners energy consumption certified forest.
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部