Economics of Australian Soil Conditions 1996/97 – Gross Benefit Acidity ($/ha/yr)

\r\n\r\nGross Benefit Acidity (gb97a = p97a a pfe97) ($/ha/yr) dataset is one of 11\r\nnational surfaces, represented by ~1km grids, relating to economic\r\nopportunities associated with soil condition. All dollar values are given in\r\n1996/97 Australian dollars. There are three sub-types of data in this dataset:\r\nrelative yields, gross benefits and impact costs. Each is described as\r\nfollows:1. Relative yield (RY): This is the yield of the crop or pasture,\r\nrelative to its full potential expressed as a percentage. It is equal to\r\nactual yield divided by potential yield. The relative yield surfaces, measured\r\nas a ratio (0 to 1) and represented with a 1km grid, include: * ry_salt2000;\r\nry_salt2020: The relative yield of salinity in the year 2000 and 2020*\r\nry_Acid; ry_Esp: The relative yield from soil acidity and soil sodicity*\r\nry_min: The limiting factor relative yield a minimum of ry_salt2000, ry_acid,\r\nry_esp and ry_min.* lim_fact:Factor most limiting yield a of acidity, sodicity\r\nand salinity 2. Gross benefit (GB): The gross benefit is the additional profit\r\nat full equity attainable through agricultural production if the yield-\r\nlimiting factor of salinity, acidity or sodicity were repaired without cost.\r\nAs such it can be considered an approximate investment ceiling on treating the\r\nsoil. The gross benefit grids are measured in $/ha/yr and include:* gb97a;\r\ngb97e; gb97s a for soil acidity; sodicity; salinity* gb97m a the combined\r\nlimiting factor gross benefit. 3. Impact cost (ic97s): This is the decline in\r\nagricultural profit at full equity due to worsening dryland salinity severity\r\nand extent over the time period 2000 to 2020. It is measured in $/ha/yr. It is\r\ndetermined only through changes in crop yield as a consequence of changes in\r\ndryland salinity. Impact cost can be considered the loss in profit at full\r\nequity due to worsening salinity over the 20yr time period. Keywords:\r\nEconomics, Natural Resources, Australia, Salinity, Sodicity, Acidity, Soil\r\nTreatment Data is in albers and unprojected, using WGS84 and GDA94.\r\n\r\nSee [further metadata](http://data.daff.gov.au/anrdl/metadata_files/pa_easc_r9cl\r\n__08312a01.xml) for more detail.\r\n\r\n