The comparative role of key environmental factors in determining savanna productivity and carbon fluxes: A review, with special reference to northern Australia

Kasturi Devi Kanniah, Jason Beringer, Lindsay Hutley

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    Terrestrial ecosystems are highly responsive to their local environments and, as such, the rate of carbon uptake both in shorter and longer timescales and different spatial scales depends on local environmental drivers. For savannas, the key environmental drivers controlling vegetation productivity are water and nutrient availability, vapour pressure deficit (VPD), solar radiation and fire. Changes in these environmental factors can modify the carbon balance of these ecosystems. Therefore, understanding the environmental drivers responsible for the patterns (temporal and spatial) and processes (photosynthesis and respiration) has become a central goal in terrestrial carbon cycle studies. Here we have reviewed the various environmental controls on the spatial and temporal patterns on savanna carbon fluxes in northern Australia. Such studies are critical in predicting the impacts of future climate change on savanna productivity and carbon storage. � 2010 The Author(s).
    Original languageEnglish
    Pages (from-to)459-490
    Number of pages32
    JournalPROGRESS IN PHYSICAL GEOGRAPHY
    Volume34
    Issue number4
    Publication statusPublished - 2010

    Keywords

    • Australia
    • carbon balance
    • carbon cycle
    • environmental factor
    • fire
    • primary production
    • rainfall
    • savanna
    • solar radiation

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