Analysis of Carbon Emission Characteristics of Open-air Straw Burning in Guangxi
This paper used the emission factor method to estimate the emissions of greenhouse gases CO,CO2 and CH4 and carbon emissions caused by straw burning,and allocated carbon emissions in a grid based on fire point data.The results showed that the total amount of open-air straw burning in Guangxi in 2022 was 5.5045 million tons,and the emissions of CO,CO2,and CH4 were 0.3146 million tons,7.227 million tons,and 0.0144 million tons respectively.The total carbon emission was 2.1187 million tons.Among them,the most impact came from sugarcane straw with a contribution of 55.8％.The distribution of air pollutants emitted by biomass combustion sources was uneven.The high value areas of CO,CO2 and CH4 pollutant emissions and total carbon emissions were mainly concentrated in Laibin and Nanning,as well as Chongzuo in southwest Guangxi.The carbon emissions from open-air straw burning in Chongzuo City accounted for 19.5％of Guangxi's,17.2％for Laibin,and 15.9％for Nanning.The carbon emissions of other cities were all below 10％.Affected by the seasonality of crop farming and harvesting,the open-air straw burning in Guangxi changed seasonally,mainly from January to April and November to December.The sugarcane crushing season was a period of high incidence of open-air straw burning.
open burning of strawsugarcane burninggreenhouse gascarbon emissionemission factor
万方数据
维普
