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    Ground truthing protocols for biomass estimation in rangeland environments

    Access Status
    Fulltext not available
    Authors
    Mundava, C.
    Schut, A.
    Stovold, R.
    Donald, G.
    Lamb, D.W.
    Helmholz, Petra
    Date
    2013
    Type
    Conference Paper
    
    Metadata
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    Citation
    Mundava, Charity and Schut, Antonius G.T. and Stovold, Richard and Donald, Graham and Lamb, David W. and Helmholz, Petra. 2013. Ground truthing protocols for biomass estimation in rangeland environments, in Proceedings of the International Geoscience and Remote Sensing Symposium (IGARSS), Jul 21-26 2013, pp. 2122-2124. Melbourne, Australia: IGARSS.
    Source Title
    IGARSS International Geoscience & Remote Sensing Symposium
    Source Conference
    IEEE International Geoscience & Remote Sensing Symposium, IGARSS 2013
    Additional URLs
    http://doi.or/10.1109/IGARSS.2013.6723232
    URI
    http://hdl.handle.net/20.500.11937/10483
    Collection
    • Curtin Research Publications
    Abstract

    Remote sensing for the assessment and mapping of total standing biomass relies on accurate ground data for calibration and validation. The spatial heterogeneity of rangelands pose challenges in sampling methodologies, demanding a large number of replicate measurements that are expensive and labour demanding when working on the scale of pastoral stations. In this paper we present a ground truthing protocol that can be used for biomass estimation in heterogeneous rangeland environments, important for the development of assessments based on remote sensing or growth modelling. The protocol is based on a combination of visual estimates, crop circle NDVI, and disk-plate meter height recordings. Relationships between these indirect measurements and biomass were specific for either season or vegetation type. A combination of these measurements in a multivariate regression provided an accurate alternative, while strongly reducing the number of cuts required.

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