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来源类型 | Articles |
规范类型 | 论文 |
ISSN | 0378-1127 |
Reduced-impact logging in Indonesian Borneo: some results confirming the need for new silvicultural prescriptions | |
Rhee, S. | |
发表日期 | 2003 |
出处 | Forest Ecology and Management 179: 415-427 |
出版年 | 2003 |
语种 | 英语 |
摘要 | 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. |
主题 | logging effects ; selective felling ; improvement fellings ; damage ; Dipterocarpaceae ; criteria ; indicators ; silviculture |
区域 | East Kalimantan,Indonesia,Borneo |
URL | https://www.cifor.org/library/1213/ |
来源智库 | Center for International Forestry Research (Indonesia) |
资源类型 | 智库出版物 |
条目标识符 | http://119.78.100.153/handle/2XGU8XDN/90357 |
推荐引用方式 GB/T 7714 | Rhee, S.. Reduced-impact logging in Indonesian Borneo: some results confirming the need for new silvicultural prescriptions. 2003. |
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