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    Author(s): Ronald E. McRoberts; Erik Naesset; Terje Gobakken
    Date: 2014
    Source: Remote Sensing of Environment
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: Download Publication  (1014.0 KB)

    Description

    For remote and inaccessible forest regions, lack of sufficient or possibly any sample data inhibits estimation and construction of confidence intervals for population parameters using familiar probability- or design-based inferential methods. Although maps based on remotely sensed data may provide information on the distribution of resources, map-based estimates are subject to classification and prediction error, and map accuracy measures do not directly inform the uncertainty of the estimates. Model-based inference does not require probability samples and when used with synthetic estimation can circumvent small or no-sample difficulties associated with probability-based inference. The study focused on estimating proportion forest area using Landsat data for a study area in Minnesota, USA, and aboveground biomass using airborne laser scanning data for a study area in Hedmark County, Norway. For both study areas, model-based inference was used to estimate the components necessary for constructing confidence intervals for population means for non-sampled areas. The estimates were compared to simple random sampling, model-assisted, and model-based estimates that would have been obtained if the areas had been sampled. All estimates were within two simple random sampling standard errors of each other, thereby illustrating the utility of model-based inference for non-sampled areas.

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    Citation

    McRoberts, Ronald E.; Næsset, Erik; Gobakken, Terje. 2014. Estimation for inaccessbile and non-sampled forest areas using model-based inference and remotely sense auxiliary information. Remote Sensing of Environment. 154: 226-233. http://dx.doi/10.1016/j.rse.2014.08.028 0034-4257

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    Keywords

    Landsat, Lidar, Precision

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