1 / 12

Population Growth and Global Warming

Population Growth and Global Warming. By Nick Maliska. Annual Greenhouse Gas Emissions by Sector. Chain of Causation. I=PAT. I = environmental impact P = population A = affluence, GNP per capita T = technological efficiency 1% increase in population yields 1% increase in emissions.

yehuda
Download Presentation

Population Growth and Global Warming

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Population Growth and Global Warming By Nick Maliska

  2. Annual Greenhouse Gas Emissions by Sector

  3. Chain of Causation

  4. I=PAT • I = environmental impact • P = population • A = affluence, GNP per capita • T = technological efficiency • 1% increase in population yields 1% increase in emissions

  5. Two Opposing Views • Malthusian: population growth is outpacing earth’s ability to absorb waste generated by the growing population. • Boserupian: population growth leads to technological innovation, which will solve environmental problems.

  6. Support for Malthus • From 1975-1996, global population grew by 42% while emissions increased by 61%. • Elasticity of Emissions with respect to population growth = 1.42

  7. Support for Boserup • Wide Variation across countries • Low-middle income countries have high elasticity of emissions with respect to population growth (above 2) • High income countries have below unitary (less than 1)

  8. Environmental Kuznets Curve

  9. Households vs. Population • I = HAT • Significant portion of energy consumed is based on household consumption, not individual consumption • Average size has decreased from 3.6 to 2.7, so number of households has increased relative to population growth in developed world

  10. Kyoto Protocol

  11. Policy Implications • Controlling population growth will be key to controlling greenhouse gas emissions • Developing World is responsible for an increasing proportion of global emissions. • If only control emissions in the developed world, expected 4 degree Celsius rise in temperature will be reduced by 1 degree

  12. Expected Rise in Temperature

More Related