青海东部城市群大气氨排放清单研究

Ammonia Emission Inventory in Eastern Urban Agglomeration of Qinghai Province

为了掌握青海东部城市群内大气氨的排放来源及排放特征,搜集并整理了各排放源的活动水平数据,利用排放因子法计算了2017年青海省东部城市群大气氨排放清单.结果表明:①青海省东部城市群2017年氨排放量为44.92×10^(3)t,排放强度为2.80 t km^(2).②农业源是区域内最大的氨排放源,其中畜禽养殖和农田生态系统氨排放量分别占总排放量的81.07%和7.12%,绵羊、奶牛和肉牛的氨排放量较大.③湟中区和大通回族土族自治县氨排放量较高,占总排放量的53.7%,城中区、大通回族土族自治县、湟中区、湟源县、平安区、乐都区、民和回族土族自治县、互助土族自治县的主要氨排放源均为畜禽养殖源.④污染源分布受地形地势影响,多沿湟水流域分布,同时也与地区经济发展水平有关.研究显示,大气氨排放源以畜禽养殖源为主,且集中于湟中区和大通回族土族自治县.

In order to clarify the sources and characteristics of atmospheric ammonia emissions in the eastern urban agglomeration of Qinghai Province,the activity level data of each emission source were collected,and the emission factor method was used to compile the ammonia emission inventory of the region in 2017.The results show that:(1)The ammonia emission of the eastern urban agglomeration of Qinghai Province in 2017 was 44.92×10^(3) t,and the emission intensity was 2.80 t km^(2).(2)Agriculture was the largest ammonia emission source in the study region.Livestock and farmland ecosystem accounted for 81.07%and 7.12%of the total emissions respectively,and sheep,cow and beef cattle were the main emission sources of livestock.(3)Huangzhong District and Datong Hui and Tu Autonomous County were the largest ammonia emission districts,accounting for 53.7%of the total emission,livestock was the main ammonia emission source of Chengzhong District,Datong Hui and Tu Autonomous County,Huangzhong District,Huangyuan County,Ping′an District,Ledu District,Minhe Hui and Tu Autonomous County and Huzhu Tu Autonomous County.(4)The distribution of emission sources was affected by topography,mostly along the Huangshui River Basin,and was also related to the level of regional economic development.The results show that livestock is the main ammonia emission source in the eastern urban agglomeration of Qinghai Province,and Huangzhong District and Datong Hui and Tu Autonomous County are the main areas of ammonia emissions.