Efficiency of blanket and selective climber cutting at Deramakot Forest Reserve, Sabah

Efficiency of blanket and selective climber cutting at Deramakot Forest Reserve, Sabah

The efficiency of blanket (BCC) and selective climber cutting (SCC) in terms of time and cost, regenerative capacity of cut climbers and growth rate of Potential Crop Trees (PCTs; 5≤30 cm DBH) in Deramakot Forest Reserve, Sabah (DFR) was investigated in this thesis. This study was conducted in Co...

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Main Author: Yeong, Kok Loong
Format: Thesis
Language:English
Published: 2009
Subjects:
SD Forestry
Online Access:https://eprints.ums.edu.my/id/eprint/9171/1/mt0000000363.pdf
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spelling my-ums-ep.91712017-10-27T09:04:11Z Efficiency of blanket and selective climber cutting at Deramakot Forest Reserve, Sabah 2009 Yeong, Kok Loong SD Forestry The efficiency of blanket (BCC) and selective climber cutting (SCC) in terms of time and cost, regenerative capacity of cut climbers and growth rate of Potential Crop Trees (PCTs; 5≤30 cm DBH) in Deramakot Forest Reserve, Sabah (DFR) was investigated in this thesis. This study was conducted in Compartment 60 and 61 of OFR which were representative of the logged forests in Sabah. The experimental design for this study was a uni-factorial randomized complete block design (RCBD) that comprised of three 50x50m plots in a Block with ten replicates. The climber density (> 1 cm DBH) in the study site was enumerated only in the Control. Climbers (> 1 cm OBH) were not enumerated in the BCC and SCC but assumed to be similar with the Control. In BCC and SCC, only climbers on tress greater than 30cm OBH were enumerated. The density of climbers greater than 1 cm DBH in DFR was 404±235 stems ha�¹, belonging to 46 species in 34 genera and 24 families. Climber densities on trees greater than 30 cm DBH in BCC, SCC and Control were 159±142 (SD), 164±100 and 117±64 stems ha�¹, respectively. All climbers were removed in BCC while only climbers on trees greater than 30cm DBH were removed in SCC. Climbers were intact in the Control. The time taken to cut climbers in BCC [45.73±17.92 (SD) minutes ha�¹] was 52% longer than SCC [29.99±7.72 minutes ha�¹; Paired t-test; N= 10; t=2.293, p=0.048]. The number of coppiced climber stumps, after cutting between BCC (8%) and SCC (5%) after 6 months was not significant (Pearson Chi-Square; N=10; X² =1.667, df=1, p=0.197). The Relative Growth Rate (RGR) of PCTs in BCC was 0.057±0.02 (SD) cm month�¹, SCC was 0.043±0.017 cm month�¹and Control was 0.036±0.012 cm month�¹. A significant difference in RGR was found between Bec and Control (Tukey's HSD; p=0.032) but none between BCC and SCC (Tukey's HSD; p=0.183). Given that SCC was as efficient as BCC treatment, SCC should be adopted in DFR, Sabah. 2009 Thesis https://eprints.ums.edu.my/id/eprint/9171/ https://eprints.ums.edu.my/id/eprint/9171/1/mt0000000363.pdf text en public masters Universiti Malaysia Sabah School of International Tropical Forestry
institution Universiti Malaysia Sabah
collection UMS Institutional Repository
language English
topic SD Forestry
spellingShingle SD Forestry
Yeong, Kok Loong
Efficiency of blanket and selective climber cutting at Deramakot Forest Reserve, Sabah
description The efficiency of blanket (BCC) and selective climber cutting (SCC) in terms of time and cost, regenerative capacity of cut climbers and growth rate of Potential Crop Trees (PCTs; 5≤30 cm DBH) in Deramakot Forest Reserve, Sabah (DFR) was investigated in this thesis. This study was conducted in Compartment 60 and 61 of OFR which were representative of the logged forests in Sabah. The experimental design for this study was a uni-factorial randomized complete block design (RCBD) that comprised of three 50x50m plots in a Block with ten replicates. The climber density (> 1 cm DBH) in the study site was enumerated only in the Control. Climbers (> 1 cm OBH) were not enumerated in the BCC and SCC but assumed to be similar with the Control. In BCC and SCC, only climbers on tress greater than 30cm OBH were enumerated. The density of climbers greater than 1 cm DBH in DFR was 404±235 stems ha�¹, belonging to 46 species in 34 genera and 24 families. Climber densities on trees greater than 30 cm DBH in BCC, SCC and Control were 159±142 (SD), 164±100 and 117±64 stems ha�¹, respectively. All climbers were removed in BCC while only climbers on trees greater than 30cm DBH were removed in SCC. Climbers were intact in the Control. The time taken to cut climbers in BCC [45.73±17.92 (SD) minutes ha�¹] was 52% longer than SCC [29.99±7.72 minutes ha�¹; Paired t-test; N= 10; t=2.293, p=0.048]. The number of coppiced climber stumps, after cutting between BCC (8%) and SCC (5%) after 6 months was not significant (Pearson Chi-Square; N=10; X² =1.667, df=1, p=0.197). The Relative Growth Rate (RGR) of PCTs in BCC was 0.057±0.02 (SD) cm month�¹, SCC was 0.043±0.017 cm month�¹and Control was 0.036±0.012 cm month�¹. A significant difference in RGR was found between Bec and Control (Tukey's HSD; p=0.032) but none between BCC and SCC (Tukey's HSD; p=0.183). Given that SCC was as efficient as BCC treatment, SCC should be adopted in DFR, Sabah.
format Thesis
qualification_level Master's degree
author Yeong, Kok Loong
author_facet Yeong, Kok Loong
author_sort Yeong, Kok Loong
title Efficiency of blanket and selective climber cutting at Deramakot Forest Reserve, Sabah
title_short Efficiency of blanket and selective climber cutting at Deramakot Forest Reserve, Sabah
title_full Efficiency of blanket and selective climber cutting at Deramakot Forest Reserve, Sabah
title_fullStr Efficiency of blanket and selective climber cutting at Deramakot Forest Reserve, Sabah
title_full_unstemmed Efficiency of blanket and selective climber cutting at Deramakot Forest Reserve, Sabah
title_sort efficiency of blanket and selective climber cutting at deramakot forest reserve, sabah
granting_institution Universiti Malaysia Sabah
granting_department School of International Tropical Forestry
publishDate 2009
url https://eprints.ums.edu.my/id/eprint/9171/1/mt0000000363.pdf
_version_ 1747836355339091968

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