Estimating regional terrestrial carbon fluxes for the Australian continent using a multiple-constraint approach I. Using remotely sensed data and ecological observations of net primary production

Article English OPEN
Wang, Ying Ping ; Barrett, Damian J. (2011)

We have developed a modelling framework that synthesizes various types of field measurements at different spatial and temporal scales. We used this modelling framework to estimate monthly means and their standard deviations of gross photosynthesis, total ecosystem production, net primary production (NPP) and net ecosystem production (NEP) for eight regions of the Australian continent between 1990 and 1998. Annual mean NPP of the Australian continent varied between 800 and 1100 Mt C yr−1 between 1990 and 1998, with a coefficient of variation that is defined as the ratio of standard deviation and mean between 0.24 and 0.34. The seasonal variation of NPP for the whole continent varied between 50 and 110 Mt C month−1 with two maxima, one in the autumn and another in the spring. NEP was most negative in the winter (a carbon sink) and was most positive (a carbon source) in the summer. However, the coefficient of variation of monthly mean NEP was very large (> 4), and consequently confidence in the predicted net carbon fluxes for any month in the period 1990–1998 for the whole continent was very low. A companion paper will apply atmospheric inverse technique to measurements of CO2 concentration to further constrain the continental carbon cycle and reduce uncertainty in estimated mean monthly carbon fluxes.DOI: 10.1034/j.1600-0889.2003.00031.x
  • References (51)
    51 references, page 1 of 6

    Amthor, J. S. and members of the Ecosystems Working Group. 1998. Terrestrial Ecosystem Responses to Global Change: a research strategy. ORNL Technical Memorandum 1998/27, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37 pp.

    Attiwill, P. M. 1979. Nutrient cycling in a Eucalyptus obliqua (L'He´rit.) forest. III Growth, biomass, and net primary production. Austr. J. Bot. 27, 439- 458.

    AUSLIG 1990. Atlas of Australian resources. Third Series, Volume 6, Australian Surveying and Land Information Group, Canberra, Australia.

    Barrett, D. J. 2001. NPP Multi-Biome: VAST calibration data, 1965-1998. Available on-line [http://www.] from Oak Ridge National Laboratory Distributed Active Archive Research Center, Oak Ridge Tennessee, USA.

    Barrett, D. J. and Xu, H. Y. 2003. Parameterisation of a large-scale terrestrial carbon cycle model by a constrained genetic algorithm using multiple data sets of ecological observations from minimally disturbed sites. Global Biogeochem. Cycles, in press.

    Barrett, D. J., Galbally, I. E. and Graetz, R. D. 2001. Quantifying uncertainty in estimates of C-emissions from aboveground biomass due to historical land-use change to cropping in Australia. Global Change Biol. 7, 833-902.

    Biraud, S., Ciais, P., Ramonet, M., Simmonds, P., Kazan, V., Monfray, P., O'Doherty, S., Spain, T. G. and Jennings, S. G. 2000. European greenhouse gas emissions estimated from continuous atmospheric measurements and radon-222 at Mace Head, Ireland. J. Geophys. Res. 105, 1351-1366.

    Bureau of Meteorology, 1988. Climatic averages Australia. Australian Government Publishing Service, Canberra, Australia.

    Carswell, F. E., Wandelli, E. V., Bonates, L. C. M., Kruijt, B., Barbosa, E. M., Nobre, A. S., Grace, J. and Jarvis, P. G. 2000. Photosynthetic capacity in a central Amazonia rainforest. Tree Physiol. 20, 179-186.

    Cliff, A. D. and Ord, J. K. 1981. Spatial processes: models and applications. Pion Ltd, London, UK. 266 pp.

  • Metrics
    No metrics available
Share - Bookmark