Managing Macroeconomic Policies for Sustainable Growth
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Managing Macroeconomic Policies for Sustainable Growth

John Asafu-Adjaye and Renuka Mahadevan

The authors expertly reveal a model-based analysis of economic development and environmental issues with policy prescriptions for enhancing sustainable development. Within the last four decades, there has been a rapid deterioration in the quality of our environmental and natural resources, raising grave concerns about the sustainability of unbridled economic growth. In light of these concerns, the authors analyse a range of economic and environmental issues, and propose policy recommendations that would enhance sustainable economic growth. The book covers a variety of issues related to economic development, trade, energy and climate change, and focuses on countries in the Asia-Pacific region including Australia, Thailand, Papua New Guinea and Fiji.
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Chapter 8: Impacts of Climate Change on Agricultural Productivity: A Comparison of Africa and the Rest of the World

John Asafu-Adjaye and Renuka Mahadevan


8. ______________________________________________________ 8.1 INTRODUCTION Climate change is one of the greatest threats confronting the future of humankind. After years of research on this issue, a number of robust conclusions have now been reached. Firstly, it has b e e n firmly established that the Earth is undergoing rapid changes due to significant increases in greenhouse gases (GHGs). For example, global GHG emissions have roughly doubled since the early 1970s and on current policies could rise by over 70% during 2008–50. Atmospheric concentrations of carbon dioxide (CO2) have increased by nearly 100 ppm (parts per million) compared to pre-industrial levels, reaching 379 ppm in 2005, and the Earth has warmed by 0.7°C since 1900 (Brohan et al., 2006; IPCC, 2007). Secondly, human activities, particularly burning of fossil fuels and deforestation, have been identified as prime causes of the changes observed in the 20th century and are likely to contribute to further changes in the 21st century (IPCC, 2001). Thirdly, these atmospheric changes are highly likely to alter temperatures, rainfall patterns, sea level, extreme events and other aspects of climate. Climate change became an international issue in the late 1980s with the formation of the Intergovernmental Panel on Climate Change (IPCC) under the auspices of the United Nations Environment Programme (UNEP) and the World Meteorological Organization (WMO). The United Nations Framework Convention on Climate Change (UNFCCC) was signed by 155 countries at the United Nations Conference on Environment and Development (the Rio Earth Summit) in 1992. More than 50 nations ratified...

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