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Changes of waste generation in Australia: Insights from structural decomposition analysis
He He1, Christian John Reynolds2, Zixiang Zhou3
1Centre for Industrial and Applied Mathematics, Mawson Lakes Campus, University of South Australia, Mawson Lakes Boulevard, Mawson Lakes, SA 5095, Australia.
Waste Management (New York, N.Y.)
|December 6, 2018
Summary
Increased economic activity, particularly in final demand, drove waste generation in Australia. However, shifts in production mix reduced waste, highlighting consumption behavior and technological innovation as key areas for policy intervention.
Area of Science:
- Environmental Economics
- Industrial Ecology
- Applied Economics
Background:
- Waste generation is intrinsically linked to consumption patterns, affecting both household final demand and supply chains.
- Understanding the drivers of waste generation within supply chains is crucial for effective waste management strategies.
- Environmentally-extended input-output models offer a robust framework for analyzing the nexus between economic activities and waste generation.
Purpose of the Study:
- To analyze the determinants of waste generation changes in the Australian economy between 2007-2008 and 2013-2014.
- To identify the key economic and technological factors influencing waste generation trends.
- To provide insights for policy development aimed at waste reduction.
Main Methods:
- Structural Decomposition Analysis (SDA) was employed to dissect the factors contributing to changes in waste generation.
- An environmentally-extended input-output model was utilized to link economic activities with waste generation data.
- Analysis focused on the Australian economy over a defined period (2007-2008 to 2013-2014).
Main Results:
- The primary driver for increased waste generation was the overall rise in economic activity within final demand.
- Changes in the production mix of final demand (mix effect) led to a decrease in waste generation.
- The Manufacturing sector exhibited the highest waste generation intensity, while technological change significantly impacted the Construction sector's waste generation in 2011-2012.
Conclusions:
- Final demand, technological advancements, and sectoral shifts are identified as historical drivers of Australian waste generation.
- Policy interventions should focus on modifying consumption and waste generation behaviors.
- Promoting innovation in ecological technologies is essential for reducing industrial waste in Australia.
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