Abstract:

Under the background of global warming,to reduce greenhouse gas emissions and develop lowcarbon economy has become the general consensus of all regions in the process of development.Taking Hunan Province as study region,the paper gave a comprehensive analysis of the change of carbon source and carbon sink during 1995~2008 from the aspects of energy consumption,the main industrial products technology processes, land use change and livestock management,and solid waste management and waste water management and emission.The results showed that, the total greenhouse gas emissions was between 0.22 billion tons (in 2000) and 0.399 billion tons( in 2008) carbon dioxide equivalent during 1995~2008,and increased by 61.18% with an average annual growth rate of 3.74%.Meanwhile,the total carbon sink was between 1.754 billion (in 1995) and 2537 billion (in 2007) tons carbon dioxide equivalent during 1995~2008,and increased by 3607% with an average annual growth rate of 240%.The main carbon source is energy consumption and from the sector of agriculture,and the forest is the main carbon sink source.The integrated results of the carbon source and carbon sink showed that,the capacity of carbon sink exceeded the amount of greenhouse gas emissions during 1995~2008;and the net capacities of carbon sink continued to grow during2001~2007,it increased by 31.94% with an average annual growth rate of 215% in 14 years