An online system for calculating and delivering long-term carrying capacity information for Queensland grazing properties. Part 2: modelling and outputs

A combination of field data and models have been used to estimate long-term carrying capacity (LTCC) domestic livestock in Queensland grazing lands. These methods synthesised coupled with recent developments science information technology provide a fully-automated approach modelling LTCC through the FORAGE online system. In this study, GRASP model was simulate pasture growth parameter sets safe utilisation rates defined for 225 land types across Queensland. Distance water points assess accessibility pastures livestock. Spatial analysis classified property into unique areas based on paddock, type distance points, which estimated growth, at sub-paddock scale. Thirteen foliage projective cover (FPC) classes were system deal non-linear relationship between tree grass interactions. As ‘proof concept’, remotely-sensed individual-date green ground optimise parameters improve performance, Monte Carlo provided uncertainty estimates outcomes. The framework provides an efficient standardised method estimating LTCC. To test system, LTCCs from 43 ‘benchmark’ properties compared simulated LTCCs, 65% modelled within ± 25% benchmark LTCCs. Due uncertainties inputs scale simulation, should be as starting point further refinement actual