基于小尺度的高寒牧区土地碳排放估算——以甘南州合作市为例

Carbon emissions are the hot issues of the current domestic and international research.Throughout the calculation of carbon emissions,the key involves two aspects:First,the choice of research scale,second,the definition to assessment parameters( carbon emission / absorption coefficient).The alpine pastoral must also full consider Livestock carbon emissions.The paper carried out a systematic calculation of land use carbon emissions and carbon sinks,which combined characteristics of alpine pastures and the lastest second national survey data of land use,by the way of scale-down to the 41 administrative villages.The results show that:( 1) The total carbon emissions characterization show as " carbon deficit" situation.The total carbon emissions24374.82 t / a,Land-use carbon emissions 4908.21 t / a,the livestock metabolism carbon emissions 3703.94 t / a,and urban-rural residents living carbon emissions 15762.67 t / a.Carbon sinks only have 1949.74 t / a,the amount of " carbon deficit " reaches to 22425.08 t / a.( 2) In the alpine pastoral,livestock is the main body of breathing carbon emissions,carbon emissions for 3703.94 t / a,which the cattle are the main factors of the carbon emissions,more than 90% of its carbon emissions.( 3) Urban-rural residents living carbon emissions reaches to15762.67 t / a,the towns significantly higher than rural areas,This suggests that the survival-type carbon emission intensityis higher than the development of carbon emission intensity.( 4) From the city-semi-agricultural and semi-pastoral areaspu...