Mapping Economic Returns to Agriculture for Informing Environmental Policy in the Murray–Darling Basin, Australia |
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Authors: | Brett A Bryan Stefan Hajkowicz Steve Marvanek Mike D Young |
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Institution: | (1) CSIRO Land and Water. PMB 2, Glen Osmond, Adelaide, South Australia, 5064, Australia;(2) CSIRO Sustainable Ecosystems, St. Lucia, Brisbane, Queensland, Australia;(3) The University of Adelaide, Adelaide, South Australia, 5005, Australia |
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Abstract: | We integrate information from several disparate data sources including agricultural statistics and remote sensing to quantify
and map the distribution and dynamics of agricultural returns to land and water resources from 1996/1997 to 2000/2001 in the
Murray–Darling Basin (MDB), Australia. Total profit to agriculture was estimated at AUD3.86B in 1996/1997 and AUD3.73B in
2000/2001. The mapping reveals a high spatial concentration of economic returns to land and water resources from agriculture.
Dryland agriculture covers over 82% of the study area. Irrigated agriculture covers 1.7% of the land area (2000/2001) but
returns one third of the total profit to agriculture. We found that around 80% of the profit to agriculture comes from just
over 5% of the land area. The results from this regional scale economic mapping can inform regulatory policy and public investments
in natural resource management through targeting industries and regions that provide low marginal returns to the natural resource
base. |
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Keywords: | Agricultural economics Geographic Information Systems Spatial Water |
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