The effect of commercial selective logging on a residual stand in tropical rain forest of South-Western Ethiopia

Abebe T., . and Holm S., . The effect of commercial selective logging on a residual stand in tropical rain forest of South-Western Ethiopia. pp. 387-398. ISSN 0128-1283

A primary natural forest block that was scheduled for selective logging was mapped and divided into two parts. In one part an assessment of the structure and composition of the forest was carried out. In the other part the effect of selective logging on the residual stand was studied. A one-hectare sample plot was established for the assessment A total of 154 individuals of 20 species 20 em diameter at breast height (dbh) ha-I were recorded in the unlogged primary forest. Out of these the number of commercial species 20 em dbh was about 30 trees ha-J The average harvested stem volume was 46 m ha-I. The estimated proportion of merchantable volume from the total stem volume was 28. The logging intensity was on average two trees ha-1 On average eight trees 5 em dbh were damaged for every tree felled. Apprximately 10 of the logged-over area was covered by skidding roads trails landings and gaps formed by trees felled. The number of trees 20 cm dbh found in this study was comparable to the pan-tropical average for tropical rain forest. Damage levels were low compared with figures from most tropical regions.

Full text available from: Official URL: http://www.frim.gov.my/v1/JTFSOnline/jtfs/v15n3/38...

Abstract

A primary natural forest block that was scheduled for selective logging was mapped and divided into two parts. In one part an assessment of the structure and composition of the forest was carried out. In the other part the effect of selective logging on the residual stand was studied. A one-hectare sample plot was established for the assessment A total of 154 individuals of 20 species 20 em diameter at breast height (dbh) ha-I were recorded in the unlogged primary forest. Out of these the number of commercial species 20 em dbh was about 30 trees ha-J The average harvested stem volume was 46 m ha-I. The estimated proportion of merchantable volume from the total stem volume was 28. The logging intensity was on average two trees ha-1 On average eight trees 5 em dbh were damaged for every tree felled. Apprximately 10 of the logged-over area was covered by skidding roads trails landings and gaps formed by trees felled. The number of trees 20 cm dbh found in this study was comparable to the pan-tropical average for tropical rain forest. Damage levels were low compared with figures from most tropical regions.

[error in script]

Item Type:	Article
AGROVOC Term:	Logging
AGROVOC Term:	Tropical rain forests
AGROVOC Term:	Residues
AGROVOC Term:	Breast height diameter
AGROVOC Term:	Volume
AGROVOC Term:	Primary forests
AGROVOC Term:	Regeneration
AGROVOC Term:	Forest management
AGROVOC Term:	Sawmills
AGROVOC Term:	Timber extraction
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:27
URI:	http://webagris.upm.edu.my/id/eprint/22307

Actions (login required)

View Item