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In Canada mitigation of anthropogenic climate change is being addressed more seriously by the provinces than by the federal government. ==Emissions== In 2000 Canada ranked ninth out of 186 countries in terms of per capita greenhouse gas emissions without taking into account land use changes. In 2005 it ranked eighth. In 2009, Canada was ranked seventh in total greenhouse gas emissions behind Germany and Japan. Canada is a large country with a low population density, so transportation – often in cold weather when fuel efficiency drops – is a big part of the economy. About 25 per cent of Canada's greenhouse gases (GHG)s come from trucks, trains, airplanes and, especially, cars. Commerce, residential fuel consumption and industry (excluding oil and gas) account for 24 per cent of the total, but much of those emissions come from equipment (mining trucks, front-end loaders) that do not get recorded in the transportation ledger. Another 14 per cent come from non-energy sources. The rest come from the production and manufacture of energy and power. The following table summarizes forecast changes to annual emissions by sector in megatonnes. As Canada creates targets for GHG reductions, policymakers will likely zero in on the three areas – transportation, electricity generation and fossil fuel production – in which the greatest reductions are possible. Together, these activities account for nearly two-thirds of Canada's greenhouse gases. Efficiencies can be found there. According to ''Canada's Energy Outlook'', the Natural Resources Canada (NRCan) report,〔( Canada's Energy Outlook: The Reference Case 2006 )〕 NRCan estimates that Canada's GHG emissions will increase by 139 million tonnes between 2004 and 2020, with more than a third of the total coming from petroleum production and refining. Upstream emissions will decline slightly, primarily from gas field depletion and from increasing production of coalbed methane, which requires less processing than conventional natural gas. Meanwhile, emissions from unconventional resources and refining will soar.〔( Beyond Bali )〕 However, the estimates for carbon emissions differ amongst Environment Canada, World Resources Institute and the International Energy Agency by nearly 50%. The reasons for the differences have not been determined. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Climate change in Canada」の詳細全文を読む スポンサード リンク
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