Reduced-impact logging in Indonesian Borneo: some results confirming the need for new silvicultural prescriptions
Reduced-impact logging (RIL) and conventional techniques (CNV) were compared in a mixed dipterocarp hill forest in East Kalimantan in three blocks of about 100 ha each. Damage was evaluated using pre- and post-harvesting assessments in 24 one-hectare sample plots. RIL techniques nearly halved the nu...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
2003
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/18687 |
| _version_ | 1855514882276851712 |
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| author | Sist, P. Sheil, Douglas Kartawinata, K. Priyadi, H. |
| author_browse | Kartawinata, K. Priyadi, H. Sheil, Douglas Sist, P. |
| author_facet | Sist, P. Sheil, Douglas Kartawinata, K. Priyadi, H. |
| author_sort | Sist, P. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Reduced-impact logging (RIL) and conventional techniques (CNV) were compared in a mixed dipterocarp hill forest in East Kalimantan in three blocks of about 100 ha each. Damage was evaluated using pre- and post-harvesting assessments in 24 one-hectare sample plots. RIL techniques nearly halved the number of trees destroyed (36 vs 60 trees/ha). RIL's main benefit was in the reduction of skidding damage (9,5% of the original tree population in RIL vs 25% in CNV). Before logging, mean canopy openness in CNV (three plots only) and RIL (9 plots) was similar. After logging, the mean canopy openness was 19.2% in CNV and 13.3% in RIL, and he distribution of the canopy class in RIL and CNV significantly different. CNV plots showed a higher proportion of measurements in the most open class than in RIL In mixed dipterocarp forest where harvestable timber density generally exceeds 10 trees/ha, a minimum diameter felling limit is clearly insufficient to keep extraction rates below 8 trees/ha. Based on these new results and previous studies in Borneo, the authors suggest three silvicultural rules: (1) to keep a minimum distance between stumps of ca. 40 m, (2) to ensure only single tree gaps using directional felling, (3) to harvest only stems with 60-100 cm dbh. Foresters, policy makers and certifiers should consider these as criteria for sustainable forest management. |
| format | Journal Article |
| id | CGSpace18687 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2003 |
| publishDateRange | 2003 |
| publishDateSort | 2003 |
| record_format | dspace |
| spelling | CGSpace186872025-01-24T14:11:56Z Reduced-impact logging in Indonesian Borneo: some results confirming the need for new silvicultural prescriptions Sist, P. Sheil, Douglas Kartawinata, K. Priyadi, H. logging selective felling improvement fellings damage dipterocarpaceae criteria indicators silviculture Reduced-impact logging (RIL) and conventional techniques (CNV) were compared in a mixed dipterocarp hill forest in East Kalimantan in three blocks of about 100 ha each. Damage was evaluated using pre- and post-harvesting assessments in 24 one-hectare sample plots. RIL techniques nearly halved the number of trees destroyed (36 vs 60 trees/ha). RIL's main benefit was in the reduction of skidding damage (9,5% of the original tree population in RIL vs 25% in CNV). Before logging, mean canopy openness in CNV (three plots only) and RIL (9 plots) was similar. After logging, the mean canopy openness was 19.2% in CNV and 13.3% in RIL, and he distribution of the canopy class in RIL and CNV significantly different. CNV plots showed a higher proportion of measurements in the most open class than in RIL In mixed dipterocarp forest where harvestable timber density generally exceeds 10 trees/ha, a minimum diameter felling limit is clearly insufficient to keep extraction rates below 8 trees/ha. Based on these new results and previous studies in Borneo, the authors suggest three silvicultural rules: (1) to keep a minimum distance between stumps of ca. 40 m, (2) to ensure only single tree gaps using directional felling, (3) to harvest only stems with 60-100 cm dbh. Foresters, policy makers and certifiers should consider these as criteria for sustainable forest management. 2003 2012-06-04T09:08:42Z 2012-06-04T09:08:42Z Journal Article https://hdl.handle.net/10568/18687 en Sist, P., Sheil, D., Kartawinata, K, Priyadi, H. 2003. Reduced-impact logging in Indonesian Borneo: some results confirming the need for new silvicultural prescriptions . Forest Ecology and Management 179 :415-427. ISSN: 0378-1127. |
| spellingShingle | logging selective felling improvement fellings damage dipterocarpaceae criteria indicators silviculture Sist, P. Sheil, Douglas Kartawinata, K. Priyadi, H. Reduced-impact logging in Indonesian Borneo: some results confirming the need for new silvicultural prescriptions |
| title | Reduced-impact logging in Indonesian Borneo: some results confirming the need for new silvicultural prescriptions |
| title_full | Reduced-impact logging in Indonesian Borneo: some results confirming the need for new silvicultural prescriptions |
| title_fullStr | Reduced-impact logging in Indonesian Borneo: some results confirming the need for new silvicultural prescriptions |
| title_full_unstemmed | Reduced-impact logging in Indonesian Borneo: some results confirming the need for new silvicultural prescriptions |
| title_short | Reduced-impact logging in Indonesian Borneo: some results confirming the need for new silvicultural prescriptions |
| title_sort | reduced impact logging in indonesian borneo some results confirming the need for new silvicultural prescriptions |
| topic | logging selective felling improvement fellings damage dipterocarpaceae criteria indicators silviculture |
| url | https://hdl.handle.net/10568/18687 |
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