Allometric Biomass Equations, Biomass Expansion Factors and Root-to-shoot Ratios of Planted &lt;i&gt;Acacia mangium&lt;/i&gt; Willd. Forests in West Java, Indonesia

Miyakuni, Kiyoshi; Heriansyah, Ika; Heriyanto, N. M.; Kiyono, Yoshiyuki

doi:10.20659/jfp.10.2_69

Cited by 6 publications

(2 citation statements)

References 3 publications

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“…For both, an arbitrary root:shoot ratio of 30% was applied (Gnanavelrajah et al, 2008). Only a handful of the studies performed sampling to measure root biomass in situ (e.g., Nykvist et al, 1996;Yamada et al, 2000;Miyakuni et al, 2004;Hiratsuka et al, 2005;Syahrinudin, 2005;Heriansyah et al, 2007). From the original range, we determine an adjusted range of 5-33 Mg C ha -1 (Table 2; Figure 1a).…”

Section: Other Tree Plantationsmentioning

confidence: 99%

Uncertainty in below-ground carbon biomass for major land covers in Southeast Asia

Yuen

Ziegler

Webb

et al. 2013

Forest Ecology and Management

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Owing to difficulties associated with measuring root biomass accurately in space and time, below-ground root biomass is often calculated indirectly from above-ground biomass measurements via general allometric equations. Of concern is that general equations may not provide accurate site-specific calculations for accurate carbon stock assessments. This review comparing more than 100 root-related studies conducted in SE Asia shows highly variable and uncertain belowground woody carbon (BGC) biomass estimates for many vegetation types associated with ongoing land-use changes throughout the region. Most BGC data exist for Indonesia, Malaysia, and Thailand; only a few studies have been conducted for Brunei,

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Section: Other Tree Plantationsmentioning

confidence: 99%

Uncertainty in below-ground carbon biomass for major land covers in Southeast Asia

Yuen

Ziegler

Webb

et al. 2013

Forest Ecology and Management

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“…Pendugaan biomassa hutan tanaman tropis sangat diperlukan karena berpengaruh pada siklus karbon (Morikawa, 2012). Dari biomassa hutan, kurang lebih sebanyak antara 45% dan 50% mengandung karbon (Miyakuni, Heriansyah, Heriyanto, & Kiyono, 2004; International Panel on Climate Change, 2013; International Panel on Climate Change, 2014). Selanjutnya dinyatakan oleh Heriansyah, Miyakuni, Kato, Kiyono & Kanazawa (2007), bahwa data biomassa suatu ekosistem sangat berguna untuk mengevaluasi pola produktivitas berbagai macam ekosistem yang ada.…”

Section: Potensi Jenis Vegetasiunclassified

Pendekatan Dalam Penentuan Hutan Desa Buntoi, Kabupaten Pulang Pisau, Kalimantan Tengah

Heriyanto¹

2017

j.analisis.kebijak.kehutan.

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In this study, permanent plot of one hectare was randomly selected at that location. The results showed that, biomass and carbon content of forest stand with diameter ≥2 cm was 113.63 ton/hectare or 56.81 ton C/hectare. Forest stand with heterogeneous biomass and heterogeneous species or high diversity will absorb CO 2 and produce O 2 in the air, so the forest will help in climate change. Forest village became a compromise on the claim of customary forest recognition which until now has not been resolved. The core of the village forest is that communities can manage forests legally for the welfare of rural people and sustainable environments. The designation of forest areas into village forests is appropriate with the indicator as there are no illegal logging, forest fires and relatively good forest conditions.

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Carbon outcomes of major land‐cover transitions in SE Asia: great uncertainties and REDD+ policy implications

Ziegler

Phelps

Yuen

et al. 2012

Global Change Biology

182

144

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Policy makers across the tropics propose that carbon finance could provide incentives for forest frontier communities to transition away from swidden agriculture (slash-and-burn or shifting cultivation) to other systems that potentially reduce emissions and/or increase carbon sequestration. However, there is little certainty regarding the carbon outcomes of many key land-use transitions at the center of current policy debates. Our meta-analysis of over 250 studies reporting above- and below-ground carbon estimates for different land-use types indicates great uncertainty in the net total ecosystem carbon changes that can be expected from many transitions, including the replacement of various types of swidden agriculture with oil palm, rubber, or some other types of agroforestry systems. These transitions are underway throughout Southeast Asia, and are at the heart of REDD+ debates. Exceptions of unambiguous carbon outcomes are the abandonment of any type of agriculture to allow forest regeneration (a certain positive carbon outcome) and expansion of agriculture into mature forest (a certain negative carbon outcome). With respect to swiddening, our meta-analysis supports a reassessment of policies that encourage land-cover conversion away from these [especially long-fallow] systems to other more cash-crop-oriented systems producing ambiguous carbon stock changes - including oil palm and rubber. In some instances, lengthening fallow periods of an existing swidden system may produce substantial carbon benefits, as would conversion from intensely cultivated lands to high-biomass plantations and some other types of agroforestry. More field studies are needed to provide better data of above- and below-ground carbon stocks before informed recommendations or policy decisions can be made regarding which land-use regimes optimize or increase carbon sequestration. As some transitions may negatively impact other ecosystem services, food security, and local livelihoods, the entire carbon and noncarbon benefit stream should also be taken into account before prescribing transitions with ambiguous carbon benefits.

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Allometric Biomass Equations, Biomass Expansion Factors and Root-to-shoot Ratios of Planted <i>Acacia mangium</i> Willd. Forests in West Java, Indonesia

Cited by 6 publications

References 3 publications

Uncertainty in below-ground carbon biomass for major land covers in Southeast Asia

Uncertainty in below-ground carbon biomass for major land covers in Southeast Asia

Pendekatan Dalam Penentuan Hutan Desa Buntoi, Kabupaten Pulang Pisau, Kalimantan Tengah

Carbon outcomes of major land‐cover transitions in SE Asia: great uncertainties and REDD+ policy implications

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