Eurasian Journal of Forest Science

1-6

Authors: Nadir Ayrilmis [1] , Alireza Ashori [2]

Natural fibers have received considerable attention as a substitute for synthetic fiber reinforcements in thermoplastics. As replacements for conventional synthetic fibers like aramid and glass fibers, natural fibers are increasingly used for reinforcement in thermoplastics due to their low density, good thermal insulation and mechanical properties, reduced tool wear, unlimited availability, low price, and problem-free disposal. Natural fibers also offer economical and environmental advantages over traditional inorganic reinforcements and fillers. As a result of these advantages, natural fiber reinforced thermoplastic composites are gaining popularity in automotive, garden decking, fencing, railing, and non-structural building applications, such as exterior window and door profiles, siding. Another class of naturally-sourced reinforcements of recent interest is nanocellulose-based reinforcements. This study provide a short review on developments in the area of cellulose based fibers and nanocellulose and their applications in cellulose fiber based industries such as wood-plastic composites (WPC).

18-23

Authors: Edward D. Wiafe

This paper evaluates the effect of altitude on tree species richness, diversity, growth pattern and tree abundance to assess the responses of tree species to environmental changes. The highest mountain in Ghana, Afadjato, was categorized into three namely, lower elevation (200m -400m ASL), middle elevation (400m-600m ASL) and from 600m ASL and above the mountain as upper elevation. On five transects running from the bottom to the top of the mountain, two 20m by 20m squared plots were laid in each category on any 20m rise in altitude along the gradient of the mountain. All trees greater than 5cm in diameter at 1.3m above ground were identified and measured. The species richness, basal areas of trees and diversity differed in all the three levels of elevation. Tree abundance was found to decrease with increasing altitude. It was thought that these variations could be attributed to the various micro-environmental differences that might have occurred as a result of edaphic and climatic factors. Recommendations have been made for future studies.