Australian Journal of Botany Australian Journal of Botany Society
Southern hemisphere botanical ecosystems

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

G. D. Cook A E , A. C. Liedloff A , R. W. Eager A , X. Chen B , R. J. Williams A , A. P. O’Grady C and L. B. Hutley D
+ Author Affiliations
- Author Affiliations

A Tropical Savannas Management CRC, CSIRO Sustainable Ecosystems, PMB 44, Winnellie, Darwin, NT 0822, Australia.

B Department of Earth and Environmental Science, Okanagan University College, British Columbia, Canada.

C CRC for Sustainable Hardwood Production, and CSIRO Forestry and Forest Products, Private Bag 12 Hobart, Tas. 7001, Australia.

D Tropical Savannas Management CRC, Charles Darwin University, NT 0909, Australia.

E Corresponding author. Email:

Australian Journal of Botany 53(7) 621-630
Submitted: 17 September 2004  Accepted: 17 January 2005   Published: 29 November 2005


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.


Anon., (2004). Greenhouse action in regional Australia: strategic R&D investment plan. (Australian Greenhouse Office: Canberra)

Andersen AN, Braithwaite RW, Cook GD, Corbett LK, Williams RJ, Douglas MM, Gill AM, Setterfield SA, Muller WJ (1998) Fire research for conservation management in tropical savannas: introducing the Kapalga fire experiment. Australian Journal of Ecology 23, 95–110. open url image1

Andersen, AN , Cook, GD ,  and  Williams, RJ (2003). ‘Fire in tropical savannas: the Kapalga experiment.’ (Springer: New York)

Archer, S ,  and  Stokes, C (2000). Stress, disturbance and change in rangeland ecosystems. In ‘Rangeland desertification’. pp. 17–38. (Kluwer Academic Publishers: Dordrecht, The Netherlands)

Beerling DJ, Woodward FI (1995) Leaf stable carbon isotope composition records increased water-use efficiency of C3 plants in response to atmospheric CO2 enrichment. Functional Ecology 9, 394–401. open url image1

Bonham, CD (1989). ‘Measurements for terrestrial vegetation.’ (John Wiley and Sons: New York)

Bowman DJMS, Cook GD (2002) Can stable carbon isotopes (δ13C) in soil carbon be used to describe the dynamics of Eucalyptus savanna–rainforest boundaries in the Australian monsoon tropics? Austral Ecology 27, 94–102.
CrossRef | open url image1

Burrows WH, Henry BK, Back PV, Hoffman MB, Tait LJ, Anderson ER, Menke N, Danaher T, Carter JO, McKeon GM (2002) Growth and carbon stock change in eucalypt woodlands in northeast Australia: ecological and greenhouse sink implications. Global Change Biology 8, 769–784.
CrossRef |
open url image1

Chen X, Hutley LB, Eamus D (2003) Carbon balance of a tropical savanna of northern Australia. Oecologia 137, 405–416.
CrossRef | PubMed | open url image1

Cheney, NP ,  and  Sullivan, A (1997). ‘Grassfires: fuel, weather and fire behaviour.’ (CSIRO Publishing: Melbourne)

Cook GD (1994) The fate of nutrients during fires in a tropical savanna. Australian Journal of Ecology 19, 359–365. open url image1

Cook, GD (2003). Fuel dynamics, nutrients and atmospheric chemistry. In ‘Fire in tropical savannas: the Kapalga experiment’. pp. 47–58. (Springer: New York)

Cook GD, Dawes-Gromadzki T (2005) Stable isotope signatures and landscape functioning in banded vegetation in arid-central Australia. Landscape Ecology 20, 649–660.
CrossRef |
open url image1

Cook GD, Williams RJ, Hutley LB, O’Grady AP, Liedloff AC (2002) Variation in vegetative water use in the savannas of the North Australian Tropical Transect. Journal of Vegetation Science 13, 413–418. open url image1

Dyer, RM ,  and  Mott, JJ (1999). The impact of fire on two grazed savanna communities in northern Australia. In ‘People and rangelands: building the future. Proceedings of the VI international rangeland congress, Townsville, Vol. 1’. pp. 268. (VI International Rangeland Congress Inc.: Townsville, Qld)

Dyer, R , Jacklyn, P , Partridge, I , Russell-Smith, J ,  and  Williams, D (2001). ‘Savanna burning: understanding and using fire in northern Australia.’ (Tropical Savannas CRC: Darwin)

Eamus, D , McGuiness, K ,  and  Burrows, W (2000). ‘Review of allometric relationships for estimating woody biomass for Queensland, the Northern Territory and Western Australia.’ (Australian Greenhouse Office: Canberra)

Eamus D, Chen X, Kelley G, Hutley LB (2002) Root biomass and root fractal analyses of an open Eucalyptus forest in a savanna of north. Australian Journal of Botany 50, 31–41.
CrossRef | open url image1

Enquist BJ, Niklas KJ (2002) Global allocation rules for patterns of biomass partitioning in seed plants. Science 295, 1517–1520.
CrossRef | PubMed | open url image1

Enquist BJ, Brown JH, West GB (1998) Allometric scaling of plant energetics and population density. Nature 395, 163–165.
CrossRef | open url image1

Etheridge DM, Steele LP, Langenfelds RL, Francey RJ, Barnola J-M, Morgan VI (1996) Natural and anthropogenic changes in atmospheric CO2 over the last 1000 years from air in Antarctic ice. Journal of Geophysical Research 101, 4115–4128.
CrossRef | open url image1

Farquhar GD, Richards RA (1984) Isotopic composition of plant carbon correlates with water-use efficiency of wheat genotypes. Australian Journal of Plant Physiology 11, 539–552. open url image1

Farquhar GD, O’Leary MH, Berry JA (1982) On the relationship between carbon isotope discrimination and the intercellular carbon dioxide concentration in leaves. Australian Journal of Plant Physiology 9, 121–137. open url image1

Fensham RJ, Holman JE (1999) Temporal and spatial patterns in drought-related tree dieback in Australian savanna. Journal of Applied Ecology 36, 1035–1050.
CrossRef | open url image1

Fox RE, Clark NB (1972) The incidence of termites in eucalypts of the Darwin area. Australian Forest Research 5, 29–36. open url image1

Francey RJ, Allison CE, Etheridge DM, Trudinger CM, Enting IG, Leuenberger M, Langenfelds RL, Steele LP (1999) A 1000-year high precision record of δ13C in atmospheric CO2. Tellus 51B, 170–193. open url image1

Gifford RM (2000) Carbon content of woody roots: revised analysis and a comparison with woody shoot components. National Carbon Accounting System Technical Report No. 7 (Revision 1). Australian Greenhouse Office, Canberra.

Gurney KR, Law RM, Denning AS, Rayner PJ, Baker D, Bousquet P, Bruhwiler L, Chen YH, Ciais P, Fan S, Fung IY, Gloor M, Heimann M, Higuchi K, John J, Maki T, Maksyutov S, Masarie K, Peylin P, Prather M, Pak BC, Randerson J, Sarmiento J, Taguchi S, Takahashi T, Yuen CW (2002) Towards robust regional estimates of CO2 sources and sinks using atmospheric transport models. Nature 415, 626–630.
CrossRef | PubMed | open url image1

Isbell, RF (1996). ‘The Australian soil classification.’ (CSIRO Publishing: Melbourne)

Ludwig JA, Tongway DJ, Eager RW, Williams RJ, Cook GD (1999) Fine-scale vegetation patches decline in size and cover with increasing rainfall in Australian savannas. Landscape Ecology 14, 557–566.
CrossRef | open url image1

Marshall JD, Monserud RA (1996) Homeostatic gas-exchange parameters inferred from 13C/12C in tree rings of conifers. Oecologia 105, 13–21.
CrossRef | open url image1

Miller JM, Williams RJ, Farquhar GD (2001) Carbon isotope discrimination by a sequence of Eucalyptus species along a subcontinental rainfall gradient in Australia. Functional Ecology 15, 222–232.
CrossRef | open url image1

O’Grady AP, Chen X, Eamus D, Hutley LB (2000) Composition, leaf area index and standing biomass of eucalypt open forests near Darwin in the Northern Territory, Australia. Australian Journal of Botany 48, 629–638. open url image1

Prior LD, Eamus D, Duff GA (1997) Seasonal and diurnal patterns of carbon assimilation, stomatal conductance and leaf water potential in Eucalyptus tetrodonta saplings in a wet–dry savanna in northern Australia. Australian Journal of Botany 45, 241–258.
CrossRef | open url image1

Russell-Smith J, Ryan PG, Durieu R (1997) A LANDSAT MAS-derived fire history of KNP, monsoonal northern Australia, 1980–94: seasonal extent, frequency and patchiness. Journal of Applied Ecology 34, 748–766. open url image1

Russell-Smith J, Ryan PG, Klessa D, Waight G, Harwood R (1998) Fire regimes, fire-sensitive vegetation and fire management of the sandstone Arnhem Plateau, monsoonal northern Australia. Journal of Applied Ecology 35, 829–846. open url image1

Sampson, RN ,  and  Scholes, RJ (2000). Additional human-induced activities—Article 3.4. In ‘Land use, land-use change, and forestry. A special report of the Intergovernmental Panel on Climate Change’. pp. 181–282. (Cambridge University Press: Cambridge)

Scholes RJ, Noble IR (2001) Storing carbon on land. Science 294(5544), 1012–1013.
CrossRef | PubMed |
open url image1

Schulze ED, Williams RJ, Farquhar GD, Schulze W, Langridge J, Miller JM, Walker BH (1998) Carbon and nitrogen isotope discrimination and nitrogen nutrition of trees along a rainfall gradient in northern Australia. Australian Journal of Plant Physiology 25, 413–425. open url image1

Schulze ED, Valentini R, Sanz MJ (2002) The long way from Kyoto to Marrakesh: implications of the Kyoto Protocol negotiations for global ecology. Global Change Biology 8, 505–518.
CrossRef | open url image1

Trudinger CM, Enting IG, Francey RJ, Etheridge DM, Rayner PJ (1999) Long-term variability in the global carbon cycle inferred from a high-precision CO2 and δ13C ice-core record. Tellus 51B, 233–248. open url image1

Watson RT, Noble IR, Bolin B, Ravindranath N, Verardo DJ, Dokken DJ (2000) Land use, land-use change, and forestry. A special report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge.

Werner PA, Murphy PG (2001) Size-specific biomass allocation and water content of above- and below-ground components of three Eucalyptus species in a northern Australian savanna. Australian Journal of Botany 49, 155–167.
CrossRef | open url image1

West GB, Brown JH, Enquist BJ (1997) A general model for the origin of allometric scaling laws in biology. Science 276, 122–126.
CrossRef | PubMed | open url image1

Williams RJ, Douglas M (1995) Windthrow in a tropical savanna in Kakadu National Park, north Australia. Journal of Tropical Ecology 11, 547–558. open url image1

Williams RJ, Cook GD, Gill AM, Moore PHR (1999) Fire regime, fire intensity and tree survival in a tropical savanna in northern Australia. Australian Journal of Ecology 24, 50–59.
CrossRef | open url image1

Williams, RJ , Muller, WJ , Wahren, C-H , Setterfield, SA ,  and  Cusack, J (2003). Vegetation. In ‘Fire in tropical savannas: the Kapalga experiment’. pp. 79–106. (Springer: New York)

Williams RJ, Hutley LB, Cook GD, Russell-Smith J, Edwards A, Chen X (2004) Assessing the carbon sequestration potential of mesic savannas in the Northern Territory, Australia: approaches, uncertainties and potential impacts of fire. Functional Plant Biology 31, 415–422.
CrossRef | open url image1

Williams RJ, Carter J, Duff GA, Woinarski JCZ, Cook GD, Farrer SL (2005) Carbon accounting, land management, science and policy uncertainty in Australian savanna landscapes: introduction and overview. Australian Journal of Botany 53, 583–588. open url image1

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