Forest Structure and Primary Productivity in a Bornean Heath Forest

Miyamoto, Kazuki; Rahajoe, Joeni Setijo; Kohyama, Takashi; Mirmanto, Edi

doi:10.1111/j.1744-7429.2006.00231.x

Cited by 38 publications

(30 citation statements)

References 36 publications

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“…Over time, after intense competition among the trees, the fittest survive and death of trees provides more space for radial growth. Miyamoto et al (2007) reported that forests under stress are expected to exhibit stronger reactions in forest structure and physiognomy. For example, tropical heath forests which are subjected to nutrient and water stress is characterized by short stature, slender trunks, thick leaves and low species richness (Whitmore, 1984;Richards, 1996).…”

Section: Discussionmentioning

confidence: 99%

Forest Structure Assessment of a Rehabilitated Forest

Heng¹

2011

American Journal of Agricultural and Biological Sciences

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Problem statement: Forest structure assessment provides information on forest succession, dynamics, biodiversity and health which are important but only few information is available on rehabilitated forest. The objective of this study was to assess the forest structure of selected age stands at a rehabilitated forest situated in Universiti Putra Malaysia Bintulu Sarawak Campus, Sarawak, Malaysia. Approach: Four 20×20 m plots were established in stands planted in 1991, 1999, 2008 and an adjacent natural regenerating secondary forest (±22years) and all stands were measured for Diameter Breast Height (DBH) and height and identified. Results: Forest structural analysis showed better performance in the structural characteristics mainly the mean basal area (61%), mean Dbh (56%) and mean height (60%) of the trees as compared to the adjacent natural regenerating secondary forest. Conclusion: It can be concluded that after 18 years, rehabilitated forest using accelerating natural regeneration technique showed better structural dimension. This can help to promote the reforestation and restoration activities on degraded forest. Overall, rehabilitated forest areas have yet recovered in terms of size and height.

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Section: Discussionmentioning

confidence: 99%

Forest Structure Assessment of a Rehabilitated Forest

Heng¹

2011

American Journal of Agricultural and Biological Sciences

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“…Nishimura and Suzuki (2001) examine the above-and below-ground morphology of seedlings (i.e., 12-19 cm tall) in heath and peat swamp forests in Central Kalimantan. Whereas, Miyamoto et al (2007) report that trees ≥ 5 cm in trunk diameter in heath forest tend to have slender trunk shape and small crown size up to about 10 m tall compared to those in mixed dipterocarp forest, while there is no information of sapling architecture in these forest types. Growth in trunk diameter and height is correlated with soil fertility (Ashton and Hall 1992).…”

Section: Introductionmentioning

confidence: 99%

“…power functions between tree crown dimensions. Allometric studies of tree architecture in these forest types of Indonesian lowland forests have been carried out (Kohyama and Hotta 1990, Nishimura and Suzuki 2001, Miyamoto et al 2007. Nishimura and Suzuki (2001) examine the above-and below-ground morphology of seedlings (i.e., 12-19 cm tall) in heath and peat swamp forests in Central Kalimantan.…”

Section: Introductionmentioning

confidence: 99%

Differentiation in architectural properties and functional traits of forest-floor saplings among heath, peat swamp, and mixed dipterocarp forests

Atikah

Rahajoe

Kohyama

2014

Tropics

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There are physiognomically distinctive forest types in lowland tropics reflecting variation in edaphic conditions. Tree saplings that contribute to forest regeneration are expected to show morphological properties in response to forest environment. However, it remains unknown how sapling properties are similar or different across forest types. We examined architectural and functional traits of forest floor saplings across heath, peat swamp, and mixed dipterocarp forests that characterize lowland forests in Kalimantan, Indonesia. Saplings (150-310 cm tall) of 41 species, which represent each forest type, were selected under the canopy of developed forest stands. Among these, we chose one species found in all forest types and two species in heath and peat swamp forests. Significant differences in crown allometries were found across forest types and across species. Saplings in mixed dipterocarp forest had thicker trunk and wider crown at the same sapling height compared to other forests and they had higher specific leaf area, higher mass-based leaf nitrogen content and lower wood density. Heath forest saplings showed lowest leaf nitrogen content and highest wood density. Species with across forest-type distribution showed intra-specific variation in sapling traits, and which was similar to the difference among forest types. We conclude that saplings show morphological response to nutritional and water conditions that characterize forest types.

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“…Only a few studies cut more than 100 trees in Indonesia (Yamakura et al 1986a, b;Hashimoto et al 2004;Heriansyah et al 2007;Miyamoto et al 2007;Basuki et al 2009;Hendri et al 2012). The cumulative number of trees cut from 168 studies was 5,207 trees.…”

Section: Sampling and Parameters Used For Developing The Equationmentioning

confidence: 99%

A review of forest and tree plantation biomass equations in Indonesia

Anitha

Verchot

Joseph

et al. 2015

Annals of Forest Science

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& Key message We compiled 2,458 biomass equations from 168 destructive sampling studies in Indonesia. Unpublished academic theses contributed the largest share of the biomass equations. The availability of the biomass equations was skewed to certain regions, forest types, and species. Further research is necessary to fill the data gaps in emission factors and to enhance the implementation of climate change mitigation projects and programs. & Context Locally derived allometric equations contribute to reducing the uncertainty in the estimation of biomass, which may be useful in the implementation of climate change mitigation projects and programs in the forestry sector. Many regional and global efforts are underway to compile allometric equations.& Aims The present study compiles the available allometric equations in Indonesia and evaluates their adequacy in estimating biomass in the different types of forest across the archipelago. & Methods A systematic survey of the scientific literature was conducted to compile the biomass equations, including ISI publications, national journals, conference proceedings, scientific reports, and academic theses. The data collected were overlaid on a land use/land cover map to assess the spatial distribution with respect to different regions and land cover types. The validation of the equations for selected forest types was carried out using independent destructive sampling data. & Results A total of 2,458 biomass equations from 168 destructive sampling studies were compiled. Unpublished academic theses contributed the majority of the biomass equations. Twenty-one habitat types and 65 species were studied in detail. Diameter was the most widely used single predictor in all allometric equations. The cumulative number of individual trees cut was 5,207. The islands of Java, Kalimantan, and Sumatra were the most studied, while other regions were underexplored or unexplored. More than half of the biomass equations were for just seven species. The majority of the studies were carried out in plantation forests and secondary forests, while primary forests remain largely understudied. Validation using independent data showed that the allometric models for peat swamp forest had lower error departure, while the models for lowland dipterocarp forest had higher error departure. & Conclusion Although biomass studies are a major research activity in Indonesia due to its high forest cover, the majority of such activities are limited to certain regions, forest types, and species. More research is required to cover underrepresented regions, forest types, particular growth forms, and very large tree diameter classes.

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Forest Structure and Primary Productivity in a Bornean Heath Forest

Cited by 38 publications

References 36 publications

Forest Structure Assessment of a Rehabilitated Forest

Forest Structure Assessment of a Rehabilitated Forest

Differentiation in architectural properties and functional traits of forest-floor saplings among heath, peat swamp, and mixed dipterocarp forests

A review of forest and tree plantation biomass equations in Indonesia

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