Год выпуска: 2012 Автор: Violah Makuvaza Издательство: LAP Lambert Academic Publishing Страниц: 72 ISBN: 9783848491186
Описание
This study investigated the factors enhancing invasion by L. camara (L.) and Eucalyptus species and their impacts on the indigenous woody tree species diversity and density at Khami. A vegetation survey of the species structure and composition of indigenous woody trees and exotic trees at sampled areas invaded and not invaded by L. camara and Eucalyptus species was done in order to determine their impact on the indigenous trees diversity and density. The results showed that L. camara and Eucalyptus sp. out competed indigenous trees significantly reducing their species richness, abundance, density and basal area. They both have a high water usage, which enable them to competitively displace indigenous trees. Eucalyptus sp. formed a closed canopy limiting light penetration and causing an increase in the height of the indigenous trees. L. camara releases chemicals (allelopathy) into the soil suppressing the regeneration of the indigenous trees. It is recommended that further research and...
