Yeong, Kok Leong (2009) Efficiency of blanket and selective climber cutting at Deramakot Forest Reserve, Sabah. Masters thesis, Universiti Malaysia Sabah.
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Abstract
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; 5:530 cm DBH) in Deramakot Forest Reserve, Sabah (DFR) was investigated in this thesis. This study was conducted in Compartment 60 and 61 of DFR 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 DBH) were not enumerated in the BCC and sec but assumed to be similar with the Control. In BCC and sec, only climbers on tress greater than 30 cm DBH 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, sec 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 sec. 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 sec [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 sec (5%) after 6 months was not significant (Pearson Chi-Square; N=lO; x2=1.667, df=l, p=0.197). The Relative Growth Rate (RGR) of PCTs in sec was 0.057±0.02 (SD) cm month-1, sec was 0.043±0.017 cm month-1 and Control was 0.036±0.012 cm month-1. A significant difference in RGR was found between sec and Control (Tukey's HSD; p=0.032) but none between BCC and sec (Tukey's HSD; p=0.183). Given that sec was as efficient as sec treatment, sec should be adopted in DFR, Sabah.
| Item Type: | Thesis (Masters) |
|---|---|
| Keyword: | Climber cutting, Blanket climber cutting, Selective climber cutting, Potential Crop Trees |
| Subjects: | S Agriculture > SD Forestry > SD1-669.5 Forestry |
| Department: | SCHOOL > School of International Tropical Forestry |
| Depositing User: | DG MASNIAH AHMAD - |
| Date Deposited: | 19 Jun 2025 15:45 |
| Last Modified: | 19 Jun 2025 15:45 |
| URI: | https://eprints.ums.edu.my/id/eprint/44216 |
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