The estimation of carbon budgets of frequently burnt tree stands in savannas of northern Australia, using allometric analysis and isotopic discrimination

G COOK, A LIEDLOFF, R Eager, X Chen, R Williams, A O'Grady, Lindsay Hutley

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    The stock, rates of sequestration and allocation of carbon were estimated for trees in 14 0.1-ha plots at Kapalga in Kakadu National Park, Northern Territory, using new allometric relationships of carbon stock to stem cross-sectional area and measured growth rates of trees. Carbon stocks of trees ranged from 12 to 58 t ha-1, with sequestration representing ?9% of the total stocks. More than half of the sequestered carbon is allocated to leaves and twigs and ?20% to wood. Only ?25% is retained in the live trees with leaf and twig fall accounting for 80-84% of the total transfers to the environment. An alternative method of calculating sequestration rates from consideration of water use and carbon-isotope discrimination data had a close to 1:1 match with estimates from allometric relationships. We developed and applied algorithms to predict the impacts of fire on carbon stocks of live trees. This showed that the reduction in live carbon stocks caused by single fires increased with increasing intensity, but the impact was highly dependent on the tree stand structure. � CSIRO 2005.
    Original languageEnglish
    Pages (from-to)621-630
    Number of pages10
    JournalAustralian Journal of Botany
    Volume53
    Issue number7
    Publication statusPublished - 2005

    Fingerprint

    carbon budget
    savanna
    savannas
    carbon sinks
    carbon
    Northern Territory
    stand structure
    water use
    carbon isotope
    analysis
    leaves
    isotopes
    national parks
    national park
    stems
    water

    Cite this

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    title = "The estimation of carbon budgets of frequently burnt tree stands in savannas of northern Australia, using allometric analysis and isotopic discrimination",
    abstract = "The stock, rates of sequestration and allocation of carbon were estimated for trees in 14 0.1-ha plots at Kapalga in Kakadu National Park, Northern Territory, using new allometric relationships of carbon stock to stem cross-sectional area and measured growth rates of trees. Carbon stocks of trees ranged from 12 to 58 t ha-1, with sequestration representing ?9{\%} of the total stocks. More than half of the sequestered carbon is allocated to leaves and twigs and ?20{\%} to wood. Only ?25{\%} is retained in the live trees with leaf and twig fall accounting for 80-84{\%} of the total transfers to the environment. An alternative method of calculating sequestration rates from consideration of water use and carbon-isotope discrimination data had a close to 1:1 match with estimates from allometric relationships. We developed and applied algorithms to predict the impacts of fire on carbon stocks of live trees. This showed that the reduction in live carbon stocks caused by single fires increased with increasing intensity, but the impact was highly dependent on the tree stand structure. � CSIRO 2005.",
    keywords = "allometry, carbon budget, carbon sequestration, fire, isotopic analysis, tree, Australasia, Australia, Kakadu National Park, Northern Territory",
    author = "G COOK and A LIEDLOFF and R Eager and X Chen and R Williams and A O'Grady and Lindsay Hutley",
    year = "2005",
    language = "English",
    volume = "53",
    pages = "621--630",
    journal = "Australian Journal of Botany",
    issn = "0067-1924",
    publisher = "CSIRO Publishing",
    number = "7",

    }

    The estimation of carbon budgets of frequently burnt tree stands in savannas of northern Australia, using allometric analysis and isotopic discrimination. / COOK, G; LIEDLOFF, A; Eager, R; Chen, X; Williams, R; O'Grady, A; Hutley, Lindsay.

    In: Australian Journal of Botany, Vol. 53, No. 7, 2005, p. 621-630.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - The estimation of carbon budgets of frequently burnt tree stands in savannas of northern Australia, using allometric analysis and isotopic discrimination

    AU - COOK, G

    AU - LIEDLOFF, A

    AU - Eager, R

    AU - Chen, X

    AU - Williams, R

    AU - O'Grady, A

    AU - Hutley, Lindsay

    PY - 2005

    Y1 - 2005

    N2 - The stock, rates of sequestration and allocation of carbon were estimated for trees in 14 0.1-ha plots at Kapalga in Kakadu National Park, Northern Territory, using new allometric relationships of carbon stock to stem cross-sectional area and measured growth rates of trees. Carbon stocks of trees ranged from 12 to 58 t ha-1, with sequestration representing ?9% of the total stocks. More than half of the sequestered carbon is allocated to leaves and twigs and ?20% to wood. Only ?25% is retained in the live trees with leaf and twig fall accounting for 80-84% of the total transfers to the environment. An alternative method of calculating sequestration rates from consideration of water use and carbon-isotope discrimination data had a close to 1:1 match with estimates from allometric relationships. We developed and applied algorithms to predict the impacts of fire on carbon stocks of live trees. This showed that the reduction in live carbon stocks caused by single fires increased with increasing intensity, but the impact was highly dependent on the tree stand structure. � CSIRO 2005.

    AB - The stock, rates of sequestration and allocation of carbon were estimated for trees in 14 0.1-ha plots at Kapalga in Kakadu National Park, Northern Territory, using new allometric relationships of carbon stock to stem cross-sectional area and measured growth rates of trees. Carbon stocks of trees ranged from 12 to 58 t ha-1, with sequestration representing ?9% of the total stocks. More than half of the sequestered carbon is allocated to leaves and twigs and ?20% to wood. Only ?25% is retained in the live trees with leaf and twig fall accounting for 80-84% of the total transfers to the environment. An alternative method of calculating sequestration rates from consideration of water use and carbon-isotope discrimination data had a close to 1:1 match with estimates from allometric relationships. We developed and applied algorithms to predict the impacts of fire on carbon stocks of live trees. This showed that the reduction in live carbon stocks caused by single fires increased with increasing intensity, but the impact was highly dependent on the tree stand structure. � CSIRO 2005.

    KW - allometry

    KW - carbon budget

    KW - carbon sequestration

    KW - fire

    KW - isotopic analysis

    KW - tree

    KW - Australasia

    KW - Australia

    KW - Kakadu National Park

    KW - Northern Territory

    M3 - Article

    VL - 53

    SP - 621

    EP - 630

    JO - Australian Journal of Botany

    JF - Australian Journal of Botany

    SN - 0067-1924

    IS - 7

    ER -