Analysis of regional greenhouse gas emission characteristics based on inventory accounting method:a case study of Sichuan Province
The greenhouse gas emission inventory of Sichuan Province was established from five aspects:energy activities,industrial production,agricultural activities,forestry activities and waste disposal.Based on the dual perspectives of departmental heterogeneity and greenhouse gas variety heterogeneity,the emission characteristics of greenhouse gas were scientifically judged and the key emission sources were determined.The results showed that:1)energy activities were the primary contribution source of greenhouse gas emission in Sichuan Province.Energy processing and conversion,as well as industrial terminal energy consumption,were key areas for carbon emissions.Regional electricity trading could indirectly reduce the intensity of carbon emissions while ensuring the safety of energy supply.2)In industrial production,due to Sichuan being a major province in cement production,CO2 emission from cement industry played a leading role.The demonstration development of electric furnace steel industry promoted carbon emission reduction in steel production.The recycling and utilization of resources resulted in low CO2 emissions from glass production.N2 O emission mainly came from the high-temperature catalytic reaction of nitric acid production.3)In agricultural activities,CH4 emissions from animal intestinal fermentation were dominant,and N2O emissions from animal manure management were significant.CH4 emissions from rice cultivation were comprehensively affected by scale effects and organic matter inputs.4)In forestry activities,forest carbon sink had a significant effect on alleviating greenhouse effect.In 2021,due to the high incidence of pests and diseases,the reduction of carbon sink caused by forest pest infestation increased sharply.5)The contribution of greenhouse gas emissions from waste disposal was small,and it mainly came from waste incineration.
万方数据
