郑州市大气氨排放清单及驱动力分析

采用排放因子法建立郑州市分县区2017年大气氨排放清单，并实现1 km×1 km空间网格分配，同时进行2007~2017年氨排放趋势及1989~2017年氨排放驱动力相关性分析.结果表明，郑州市2017年氨排放量为18143.3 t，排放强度为2.4 t ·km^-2，农业源为主要排放源（63.4%），逸散源次之（11.3%）；农业源中畜禽养殖氨排放主要来自蛋禽、肉猪和奶牛养殖；排放量前三的区县为登封市、荥阳市和新密市，分别占总量的19.3%、16.5%和15.6%；空间上郑州市南部及中西部地区排放量较高，东北部地区排放量较小；2007~2017年各区县氨排放整体呈下降趋势，1989~2017年郑州市氨排放呈类似环境库兹涅茨曲线趋势，即氨排放整体上随着人均GDP和城镇化率上升而先增加再下降.

Atmospheric NH3 Emission Inventory and Analysis of the Driving Force in Zhengzhou City

In this study, a 2017-based emission inventory of ammonia(NH₃) was established for Zhengzhou by using the emission factor method. The 1 km×1 km gridded emission inventory was mapped using GIS technology. The NH₃ emissions between 2007 and 2017 and driving force between 1989 and 2017 were also analyzed. Results showed that the total 2017-based NH₃ emission in Zhengzhou was 18143.3 t, and the average emission intensity reached 2.4 t·km^-2. The top emission source was from agriculture, accounting for 63.4% of the total emission, followed by fugacity(11.3%). The main contribution sources of livestock were egg poultry, pigs, and cattle. Dengfeng, Xingyang, and Xinmi had the highest emissions, accounting for 19.3%, 16.5%, and 15.6% of the total emission, respectively. The NH₃ emission was higher in the southern and central western regions of Zhengzhou and lower in the northeastern region. The NH₃ emission in Zhengzhou showed a downward trend from 2007 to 2017. The NH₃ emissions from 1987 to 2017 were similar to the environmental Kuznets Curve, i.e., the emissions increased first and then decreased with the increase of per capita gross domestic product(GDP) and urbanization rate.