tailieunhanh - Climate Change and Managed Ecosystems - Chapter 11

Tham khảo tài liệu 'climate change and managed ecosystems - chapter 11', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 11 Linking Biomass Energy to Biosphere Greenhouse Gas Management . Layzell and J. Stephen CONTENTS Biosphere Reduce Biosphere GHG Sequester Atmospheric Complement Fossil Energy Adapt Our Biosphere to a Changing Atmosphere and The Bioenergy Sustainable Sources of Case Study Accessing Biomass from Disturbed Forest Option 1. Harvest Biomass for Fiber Option 2 Leave the Biomass to Option 3 Harvest for Case Study Impact of Various Feedstock-to-Product Socioeconomics of Biomass 217 2006 by Taylor Francis Group LLC 218 Climate Change and Managed Ecosystems INTRODUCTION Plants have been in the business of managing greenhouse gases GHGs and solar energy for hundreds of millions of years. Therefore in a world where there are concerns about climate change and energy supply it is not unreasonable to look to biological systems and the biosphere both for solutions to these challenges and for a better understanding of the processes regulating atmospheric levels of greenhouse gases and the Earth s climate. This is especially true for Canada a nation with a vast biosphere and a relatively small population. In Canada the annual flux of carbon into and out of biological systems is more than ten times the nation s emissions of CO2 from fossil fuel energy use. The biosphere is also a large natural source and sink for the other greenhouse gases nitrous oxide N2O and methane CH4 . This chapter provides a brief overview of the role that the biosphere could play in helping Canada address the challenges of climate change .