The allometric relationships for estimating above-ground biomass and carbon stock in an abandoned traditional garden in East Kalimantan, Indonesia

Karyati, Karyati; Karmini, Karmini; Widiati, Kusno Yuli; Mulyadi, Rachmad

doi:10.13057/biodiv/d220228

Cited by 6 publications

(10 citation statements)

References 20 publications

(38 reference statements)

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“…In the context of the destructive method, a representative sample is importantly required to obtain ideal information related to tree attributes. Most studies generally used diameter distribution since it could also describe the vegetation structure from the sampling location (Altanzagas et al, 2019;Istrefi et al, 2019;Karyati et al, 2021). Moreover, the diameter is a tree parameter that most accurate to measure.…”

Section: Resultsmentioning

confidence: 99%

Carbon storage and energy production of Eucalyptus urophylla developed in dryland ecosystems at East Nusa Tenggara

Sadono

Wardhana

Idris

et al. 2021

J.Degrade.Min.Land Manage.

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The development of Eucalyptus urophylla in dryland ecosystems plays an important contribution to support climate change mitigation and renewable energy diversification. However, the information about the potential of E. urophylla for carbon reduction and energy production is rarely documented, even though it is necessary as fundamental considerations to determine the best strategy for sustainable natural resources management, primarily in dryland ecosystems. This study aimed to quantify the carbon storage and energy production of E. urophylla established in dryland ecosystems at East Nusa Tenggara. The study site is located in a eucalyptus plantation managed by Timor Tengah Selatan Forest Management Unit. Destructive sampling was conducted on 25 sample trees that were evenly distributed from small to big ones. The percentage of carbon content in every tree component, namely stem, branch, and foliage, was determined using elemental analysis, while the calorific value of each tree component was analyzed using a bomb calorimeter. Carbon storage in each component was calculated by multiplying biomass and the percentage of carbon content, while the energy production was computed by multiplying high heating value and biomass from every tree component. The results found the mean carbon storage of E. urophylla in the study site was 55.51 kg tree-1 with a minimum of 6.34 kg tree-1 and a maximum of 184.76 kg tree-1. The percentage of carbon content in the foliage was lower than other tree components by approximately 34.1%. Interestingly, the calorific value of foliage was relatively higher than stem and branch with around 5,252 kcal kg-1. The energy production of E. urophylla ranged from 252.6 to 7,813.3 MJ tree-1 with an average of 2,357.87 MJ tree-1. According to the results, this study concluded the development of E. urophylla in dryland ecosystems demonstrated a meaningful contribution to carbon absorption and energy production at East Nusa Tenggara.

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Section: Resultsmentioning

confidence: 99%

Carbon storage and energy production of Eucalyptus urophylla developed in dryland ecosystems at East Nusa Tenggara

Sadono

Wardhana

Idris

et al. 2021

J.Degrade.Min.Land Manage.

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“…Thus, tree height measurement had a high potential for bias due to the problematic situation for determining each species' top crown. Several studies also reported that tree diameter was the best predictor variable for constructing the allometric equation for community forests tree species (Karyati et al 2021;Wirabuana et al 2020).…”

Section: Discussionmentioning

confidence: 98%

Comparison of individual tree aboveground biomass estimation in community forests using allometric equation and expansion factor in Magetan, East Java, Indonesia

Setiahadi

2021

Biodiversitas

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Abstract. Setiahadi R. 2021. Comparison of individual tree aboveground biomass estimation in community forests using allometric equation and expansion factor in Magetan, East Java, Indonesia. Biodiversitas 22: 3899-3909. The use of allometric equation and biomass expansion factor can facilitate more efficient tree biomass estimation. This study evaluates the accuracy of the allometric equation and expansion factor for quantifying the individual tree aboveground biomass in community forest tree species. Destructive sampling n on 120 trees from four different species: Falcataria moluccana, Melia azedarach, Swietenia macrophylla, and Tectona grandis. For each tree sample, aboveground biomass measured at every tree component, i.e., stem, branches, and leaves. The allometric equation developed using regression analysis with several predictor variables, such as diameter at breast height (D), squared diameter at breast height combined with tree height (D2H), and D and H separately. On another side, the biomass expansion factor was calculated based on the total aboveground biomass and stem biomass ratio. The results found the highest mean aboveground biomass for all species are M. azedarach (326.36±88.40 kg tree-1), S. macrophylla (244.47±98.73 kg tree-1), T. grandis (173.31±80.97 kg tree-1), and F. moluccana (56.56±23.10 kg tree-1). The most significant average biomass expansion factor observed in M. azedarach (1.78±0.03), adhered by T. grandis (1.66±0.09), S. macrophylla (1.61±0.04), and F. moluccana (1.59±0.06). The equation ln? = lna + b x ln (D) was best for estimating aboveground biomass in each tree component and a total of four species with an accuracy of more than 90%.

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“…However, equations for estimating this biomass and carbon stocks have been subjected to several disturbances, such as forest fires, shifting cultivation, and traditional gardens. Karmini et al (2021) showed a 50-year-old secondary forest in the Province of East Kalimantan, Indonesia, with unique characteristics differentiating it from other areas. For example, a 50-year-old secondary forest has many trees with Moraceae and Euphorbiaceae's most dominant families, with the Macaranga motleyana, Artocarpus elasticus, and Symplocos fasciculata species.…”

Section: Introductionmentioning

confidence: 99%

The allometric equations for estimating above-ground biomass in a 50 years-old secondary forest in East Kalimantan, Indonesia

KARYATI¹,

KARMINI²,

WIDIATI³

2023

Biodiversitas

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Abstract. Karyati, Karmini, Widiati KY. 2023. The allometric equations for estimating above-ground biomass in a 50 years-old secondary forest in East Kalimantan, Indonesia. Biodiversitas 24: 1482-1492. Secondary forests, formed through several disturbances over the decades, have important roles in ecological and economic aspects. One of their roles in ecological aspects is the potential to store carbon. Therefore, this study aimed to develop allometric equations for estimating above-ground biomass and carbon stock in a 50 years-old secondary forest. In this field, 30 trees representing the dominant species and diameter class distribution were selected and cut down. The dry biomass of the tree's parts, including leaves, branches, and trunks, was assessed using the destructive method. The relation between trunk dry biomass and Diameter at Breast Height (DBH) showed moderate adjusted R2 value ??(0.641). Moreover, moderately strong relationships were shown by above-ground biomass with DBH (adjusted R2 of 0.516). The allometric equation to estimate above-ground biomass in 50 years-old secondary forest is useful for estimating the carbon potential in other areas of the same age, especially with a similar land use history. Information regarding biomass and carbon stock is important for forest management in general. It can assess carbon stocks, sequestration rates, and potential emissions from forests subjected to a succession process.

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The allometric relationships for estimating above-ground biomass and carbon stock in an abandoned traditional garden in East Kalimantan, Indonesia

Cited by 6 publications

References 20 publications

Carbon storage and energy production of Eucalyptus urophylla developed in dryland ecosystems at East Nusa Tenggara

Carbon storage and energy production of Eucalyptus urophylla developed in dryland ecosystems at East Nusa Tenggara

Comparison of individual tree aboveground biomass estimation in community forests using allometric equation and expansion factor in Magetan, East Java, Indonesia

The allometric equations for estimating above-ground biomass in a 50 years-old secondary forest in East Kalimantan, Indonesia

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