Simulation and analysis method for influence of different agricultural ammonia emission scenarios on PM2.5 concentration

Abstract

The invention provides simulation and analysis methods for the influence of different agricultural ammonia emission scenarios on PM2.5 concentration. The method mainly comprises three parts: improvingammonia emissions from the farmland fertilization based on an EPIC mode, developing an agricultural pollution source emission information processing system, and establishing the newest agricultural source pollutant emission list; establishing an air quality simulation and forecasting model considering the influence of the agricultural ammonia, and continuously improving the simulation and forecasting level of PM2.5; and calculating the contribution of agricultural emission sources to the PM2.5 in the main agricultural region of China and providing a corresponding control strategy. The invention utilizes the RSM/CMAQ technology, combines the relevant control technology and the future development plan, makes assumptions on the future control strategy and the corresponding control strength of the regional agricultural ammonia emissions, proposes corresponding solutions, and analyzes and calculates the list of agricultural sources and anthropogenic ammonia emissions generated under various control modes. According to the simulation and analysis methods, the local ammonia emission reduction prospect and the effect thereof can be evaluated, and valuable references are provided.

Description

technical field [0001] The invention belongs to the field of environmental protection and resource comprehensive utilization, and specifically relates to the impact of different agricultural ammonia emission scenarios on PM 2.5 Simulation and analysis methods for concentration effects. Background technique [0002] In recent years, many large and medium-sized cities in my country have gradually experienced a large number of heavy smog phenomena. Now almost all the populace know about the so-called PM 2.5 Sources, which mainly include the following five aspects: 1. Industrial pollution; 2. Motor vehicle exhaust emissions; 3. Coal burning pollution; 4. Construction site dust; 5. Pollution from external factors. There is also an important source of pollution. In recent years, many experts in the industry have proposed agricultural ammonia pollution. This source of pollution has rarely been paid attention to by everyone, but it is also responsible for urban air PM in our count...

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Problems solved by technology

[0010] It can also be seen from the above research that the development of my country's anthropogenic ammonia emission inventory is still in its infancy, and there are many difficulties

It shows that the grasp of the types of ammonia emission sources is not comprehensive enough, especially the lack of information on traffic sources and biomass sources, the lack of actual monitoring data of a large number of emission factors, etc.

In addition, due to the small spatial scale of the ammonia emission inventory, the spatio-temporal characteristics are not obvious, which may be helpful for the study of special cases in special regions, but it is not yet possible to achieve large-scale simulations.

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