摘要
Abstract
In order to analyse the characteristics of greenhouse gas emissions and the factors affecting them in Zhejiang Province,the IPCC model was used to account for agricultural greenhouse gas(GHG)emissions in each prefecture-level city in Zhejiang Province from 2008 to 2022,to analyse the trend,share and spatial-temporal distribution of GHG emissions,and to quantitatively analyse the influencing factors.The results showed that:1)the total GHG emissions in Zhejiang Province were 2267.33×104 and 1 517.88×104t CO2-e in 2008 and 2022,respectively,with an overall decreasing trend,especially in the period of 2013-2019,when the total amount decreased by 33.5％.All three greenhouse gases had decreased significantly,with the proportion of CO2 rising from 25％ in 2008 to 29％ in 2022,indicating that Zhejiang Province has achieved remarkable results in reducing CH4 and N2O,while the management of CO2 emission sources such as straw burning still needs to be strengthened;2)GHG emissions from animal manure management decreased the most,by 52.6％;3)The emissions of the three GHGs in all prefectures decreased,and the total amount of emissions gradually dispersed,with CH4 mainly concentrated in the central and northern parts of the province,N2O more stable in the north,and CO2 concentrated in the northeast and moving eastward;4)All four driving factors significantly affect agricultural GHG emissions,agricultural GDP,urbanization level and farmland size are negatively correlated with emissions,and total power of agricultural machinery is positively correlated with emissions.The effects of the four driving factors on agricultural GHG emissions are:urbanization level＞total power of agricultural machinery＞farmland size＞agricultural GDP.关键词
农业/温室气体/排放/特征/驱动因素Key words
agriculture/greenhouse gases/emissions/characteristics/driving factors分类
资源环境
