A Framework For Evaluating The Consumption
Patterns And Environmental Impacts Of
Irrigation Methods:
A Case Study From South-Eastern Australia
Author(s)
T. M. Jackson, S. Khan & M. M. Hafeez
Abstract
Irrigated agriculture is an essential tool for increasing food production to meet
global demand. However, along with benefits of high yields there are
environmental impacts that must be considered. The tendency in Australia to
evaluate irrigation systems in terms of water use efficiency only is problematic,
and the criteria used to assess the sustainability of agricultural systems should
reflect broader issues. A representative broad acre farm in the south east of
Australia was used as a case study to explore the different resource consumption
patterns and environmental impacts of flood, centre pivot and sub-surface drip
irrigation methods. The energy and water consumption of each method was
determined, along with greenhouse gas emissions and groundwater impacts, and
the systems then ranked in order of highest to lowest resource use efficiency and
environmental impact. It was found that when an irrigated system was evaluated
by more than just water use efficiency, its ranking often changed. This method
also allowed for the identification of areas where improvements could be made.
Assessing irrigation methods and their appropriate selection for a given situation
can aid in efficient and environmentally sound production systems at the local
and global scale.
Keywords: energy, water, environmental impacts, indicators.
Keywords
energy, water, environmental impacts, indicators.
Related Book
Other papers in this volume
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