Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    A new detailed map of total phosphorus stocks in Australian soil

    Access Status
    Fulltext not available
    Authors
    Viscarra Rossel, Raphael
    Bui, E.
    Date
    2016
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Viscarra Rossel, R. and Bui, E. 2016. A new detailed map of total phosphorus stocks in Australian soil. Science of the Total Environment. 542: pp. 1040-1049.
    Source Title
    Science of the Total Environment
    DOI
    10.1016/j.scitotenv.2015.09.119
    ISSN
    0048-9697
    School
    School of Molecular and Life Sciences (MLS)
    URI
    http://hdl.handle.net/20.500.11937/74542
    Collection
    • Curtin Research Publications
    Abstract

    Accurate data are needed to effectively monitor environmental condition, and develop sound policies to plan for the future. Globally, current estimates of soil total phosphorus (P) stocks are very uncertain because they are derived from sparse data, with large gaps over many areas of the Earth. Here, we derive spatially explicit estimates, and their uncertainty, of the distribution and stock of total P in Australian soil. Data from several sources were harmonized to produce the most comprehensive inventory of total P in soil of the continent. They were used to produce fine spatial resolution continental maps of total P in six depth layers by combining the bootstrap, a decision tree with piecewise regression on environmental variables and geostatistical modelling of residuals. Values of percent total P were predicted at the nodes of a 3-arcsecond (approximately 90m) grid and mapped together with their uncertainties. We combined these predictions with those for bulk density and mapped the total soil P stock in the 0-30cm layer over the whole of Australia. The average amount of P in Australian topsoil is estimated to be 0.98tha-1 with 90% confidence limits of 0.2 and 4.2tha-1. The total stock of P in the 0-30cm layer of soil for the continent is 0.91Gt with 90% confidence limits of 0.19 and 3.9Gt. The estimates are the most reliable approximation of the stock of total P in Australian soil to date. They could help improve ecological models, guide the formulation of policy around food and water security, biodiversity and conservation, inform future sampling for inventory, guide the design of monitoring networks, and provide a benchmark against which to assess the impact of changes in land cover, land use and management and climate on soil P stocks and water quality in Australia.

    Related items

    Showing items related by title, author, creator and subject.

    • Baseline map of organic carbon in Australian soil to support national carbon accounting and monitoring under climate change
      Viscarra Rossel, Raphael; Webster, R.; Bui, E.; Baldock, J. (2014)
      We can effectively monitor soil condition-and develop sound policies to offset the emissions of greenhouse gases-only with accurate data from which to define baselines. Currently, estimates of soil organic C for countries ...
    • Baseline estimates of soil organic carbon by proximal sensing: Comparing design-based, model-assisted and model-based inference
      Viscarra Rossel, Raphael; Brus, D.; Lobsey, C.; Shi, Z.; McLachlan, G. (2016)
      For baselining and to assess changes in soil organic carbon (C) we need efficient soil sampling designs and methods for measuring C stocks. Conventional analytical methods are time-consuming, expensive and impractical, ...
    • The cost-efficiency and reliability of two methods for soil organic C accounting
      Viscarra Rossel, Raphael; Brus, D. (2018)
      Sequestering organic carbon (C) in soil can help to combat land degradation, improve food security, and mitigate greenhouse gas emissions and climate change. But we need reliable, cost-efficient methods to assess, monitor, ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.