Results 71 to 80 of about 978 (166)

Stem Volume Allometric Models for Eucalyptus camaldulensis Plantation in Jabi Tehnan District, Northwestern Ethiopia

International Journal of Forestry Research, Volume 2026, Issue 1, 2026.
Accurate estimation of forest volume in plantation forests can be made through species‐specific models. However, such models are scarce in Africa, particularly in Ethiopia. This study aimed to determine the form factor and develop an improved species‐specific volume model for Eucalyptus camaldulensis in Jabi Tehnan district, Northwestern Ethiopia.
Amsalu Endalamaw, Amsalu Abich, Poorani Gurumallesh Prabu   +2 more
wiley   +1 more source

Tree Height Estimation Model for Acacia mearnsii Smallholder Plantation in Northwestern Highlands of Ethiopia

International Journal of Forestry Research, Volume 2026, Issue 1, 2026.
Tree height is very crucial parameter in forest management. Tree height–diameter models are routinely used for tree height prediction. These models can be developed using fixed‐ or mixed‐effects approaches. This study aimed to evaluate height prediction models for dense plantations of Acacia mearnsii in the northwestern highlands of Ethiopia.
Abebaw Alene, Dereje Chimsa, Poorani Gurumallesh Prabu   +2 more
wiley   +1 more source

The Influence of Spacing on Survival, Growth, and Biomass Accumulation of Eucalyptus globulus (Labill.) in Wogera District, Northwestern Ethiopia

International Journal of Forestry Research, Volume 2026, Issue 1, 2026.
Eucalyptus is the most planted genus in Ethiopia, and it was introduced during the regime of Emperor Menelek II in 1895. Plantation forest establishment with optimum plant density is a major challenge under the current situation of land constraint in the highland areas of Amhara region, Ethiopia.
Hailie Shiferaw Wolle, Alayu Haile, Sewale Wondimneh, Sintayehu Eshetu, Andualem Genetu, Yeshifana Alemneh, Anteneh Yenesew, Demelash Alem, Amsalu Endalamaw, Abayneh Derero, Poorani Gurumallesh Prabu   +10 more
wiley   +1 more source

Can social-ecological systems inhibit invasive species control? A study of acacia mearnsii control in the Golden Gate Highlands National park of South Africa

European Journal of Geography, 2019
Considered to be an important source of water, energy and biological diversity, mountains are a critical component of livelihoods because of the ecosystem goods and services they provide to montane communities.
Geoffrey MUKWADA , Desmond MANATSA , Munyaradzi CHITAKIRA   +2 more
doaj   +2 more sources

DETERMINAÇÃO DO PONTO DE AMOSTRAGEM PARA A OBTENÇÃO DA CONCENTRAÇÃO MÉDIA DE TANINO EM ACÁCIA [PDF]

Ciência Florestal, 1998
A altura de amostragem, nas árvores de acácia onde obtém-se a concentração média de tanino, foi estudado em população de acácia-negra, Acacia mearnsii de Willd. Considerando-se a concentração de tanino (CTA) em função da relação altura de amostragem (hi)
Sonia Maria Bitencourt Frizzo, Maria Cladis M. da Silva, Paulo Renato Schneider, Shirlei B. de Aguiar Camillo   +3 more
doaj  

Multiplicação de gemas axilares de Acacia mearnsii de wild. Sob diferentes meios de cultura Multiplication of axillary shoots in Acacia mearnsii de wild. Under different culture medium

Revista Árvore, 2009
A propagação de indivíduos superiores de acácia-negra (Acacia mearnsii De Wild.) visando ao estabelecimento de florestas mais produtivas, homogêneas, resistentes a pragas e doenças é uma necessidade nos dias atuais.
Ruter Disarz, Maísa Pimentel Martins Corder   +1 more
doaj   +1 more source

Optimisation of pollen viability tests for Acacia podalyriifolia and two ploidys of Acacia mearnsii

South African Journal of Botany, 2012
AbstractAcacia mearnsii (black wattle) is a commercially important forestry species in South Africa, grown for its timber as well as its bark. It is, however, also considered to be an alien invader of indigenous vegetation and for this reason the production of a sterile variety would be highly desirable for commercial forestry in South Africa. Previous
openaire   +1 more source

Ciclagem de nutrientes em Acacia mearnsii de wild. V. Quantificação do conteúdo de nutrientes na biomassa aérea de Acacia mearnsii de wild. Procedência australiana Nutrient cycling in Acacia mearnsii de wild. V. Quantification of nutrient contents in the above-ground biomass of australian provenance of Acacia mearnsii de wild

Ciência Rural, 2000
No presente trabalho foi quantificado o conteúdo de nutrientes na procedência Australiana Bodalla de Acácia-negra (Acacia mearnsii De Wild.), aos 2,4 anos de idade. A procedência encontra-se estabelecida em solo de baixa fertilidade, com acidez elevada e
Marcos Vinicius Winckler Caldeira, Mauro Valdir Schumacher, Neura Tedesco, Elias Moreira dos Santos   +3 more
doaj   +1 more source

PRODUÇÃO DE MADEIRA E CASCA DE ACÁCIA-NEGRA (Acacia mearnsii De Wild) EM DIFERENTES ESPAÇAMENTOS. [PDF]

Ciência Florestal, 1992
No presente trabalho foram estudadas a influência do espaçamento inicial sobre a produção de madeira e casca verde por hectare em acacia-negra (Acacia mearnsii De Wild). O experimento foi instalado em blocos casualizados, com 4 repetições e 3 tratamentos,
Frederico Dimas Fleig, César Augusto Guimarães Finger, Jorge Euclides M. Klein, Paulo Renato Schneider   +3 more
doaj  

ANALYSIS OF THE MORTALITY OF THE Acacia mearnsii De Wild.

Ciência Florestal, 2005
The mortality probability of the Acacia mearnsii De Wild. stands was studied in permanent sample stratified at different spacings and site. The results allowed to conclude that the mortality can estimated with a probabilistic function in relation with the inverse of the diameter at breast height (d) and age (t): PM = {1+ EXP (-9,5593 . d-1 + 104,9543 .
Schneider, Paulo Renato, Fortes, Fabiano de Oliveira, Souza, Luis Henrique da Silva, Lúcio, Alessandro Dal’Col, Finger, César Augusto Guimarães, Schneider, Paulo Sérgio Pigatto   +5 more
openaire   +2 more sources