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Research on Influencing Factors of Air Quality in Index Industrial Cities Based on Mountain Topography Li-yun ZENG, et. al. International Journal of Engineering Research and Applications www.ijera.com ISSN: 2248-9622, Vol. 11, Issue 5, (Series-V) May 2021, pp. 05-18 RESEARCH ARTICLE OPEN ACCESS Research on Influencing Factors of Air Quality in Index Industrial Cities Based on Mountain Topography Li-yun ZENG*1,2, Yi-qi YUAN1, Jia-man XU1 1Civil and Architectural Engineering Institute, Panzhihua University, Panzhihua,China 2.Rattanakosin International College of Creative Entrepreneurship, Rajamangala University of Technology Rattanakosin, Bangkok 10700,Thailand2 ABSTRACT: The main reasons for Panzhihua’s local pollution are the large amount of coal burned, steelmaking, and scattered non-point sources. At the same time, meteorological factors and topographical characteristics also play a significant role in air quality. This paper analyses and evaluates the air quality in Panzhihua City based on the Air Quality Index (AQI). Through the use of Train Collectors Tool to capture the air quality monitoring data in recent years, and use the visualization software to analyze the data. It is concluded that climatic factors, industrial layout, mountain topography characteristics and industrial land layout are the main causes of air pollution in mountainous cities, and air pollution control measures are proposed for the air quality in Panzhihua City. KEYWORDS: topographic features; meteorological features; industrial distribution; air quality index ----------------------------------------------------------------------------------------------------------------------------- ---------- Date of Submission: 12-05-2021 Date of Acceptance: 25-05-2021 ----------------------------------------------------------------------------------------------------------------------------- ---------- I. INTRODUCTION standards. The top 10 are Muli County, Xiaojin Mountain terrain has many regional County and Xiangcheng County (tied), Litang particularities and complexities in cities. Many County and Ganzi County (tied), Danba County. , small and medium-sized cities in our country are Ruoergai County, Baiyu County, Yajiang County, located in mountainous areas. The mountainous Songpan County, and Daofu County (tied); the terrain has an impact on the temperature, moisture bottom 10 places are East District of Panzhihua City, and movement of the atmosphere, due to the Jinkouhe District of Leshan City, West District of undulation and unevenness of the terrain. The Panzhihua City, Ebian Yi Autonomous County, Lu diffusion of air pollutants will be more complicated, County Chengdu Chenghua District, Chengdu the residence time of pollutants is longer than that of Qingyang District, Dachuan District of Dazhou City, plain cities, and the impact will be greater. After the Cuiping District of Yibin City, Jinniu District of mountainous resource-based cities have entered a Chengdu City. Among them, the poor air in period of rapid development, industry, as the driving Panzhihua City covers two areas. Also, Panzhihua is force of urban economic development, has a typical mountain resource-based industrial city developed particularly rapidly. With that, industrial and is developing and transforming into a healthy pollution, waste gas and wastewater affect the urban and livable city. Under this situation, it is urgent to environment at any time. study the ecological environment problems of According to the data obtained by the mountainous resource-based cities. Based on the Sichuan Provincial Department of Ecology and AQI index and other data, this paper adopts a Environment, in October 2020, the average Spatio-temporal analysis of the mountainous city proportion of days with good ambient air quality in Panzhihua’s topographic and industrial structure 183 counties (cities, districts) in Sichuan Province changes and other factors to analyze the air quality was 99.1%, a year-on-year decrease of 0.6%. O3, in Panzhihua. Analysis. SO2 and NO2 pollutants decreased by 17.9%, 11.1% and 5.3% year-on-year, respectively; the PM2.5 II. RESEARCH OBJECT concentration remained the same year-on-year; the Panzhihua City is located at the concentrations of CO and PM10 pollutants southernmost tip of Sichuan in southwestern China, increased by 12.5% and 3.1% year-on-year, at the junction of Sichuan and Yunnan. It is located respectively. A total of 179 counties (cities, districts) in the middle-south section of the Panxi Rift Valley. in the province meet the environmental air quality The north and south have the characteristics of high www.ijera.com DOI: 10.9790/9622-11050505185|P a g e Li-yun ZENG, et. al. International Journal of Engineering Research and Applications www.ijera.com ISSN: 2248-9622, Vol. 11, Issue 5, (Series-V) May 2021, pp. 05-18 mountains and deep valleys, and the staggered addition, Panzhihua has a complex mountainous distribution of basins. Panzhihua is a resource-based terrain and is located in the valleys on both sides of city with rare vanadium ilmenite. It has been the mountains. The blocking of the mountains has a developed under the strong support of the state. significant impact on the exhaust gas generated in There are a large number of industries. Pollutants in industrial manufacturing and the circulation of the industry such as waste gas and wastewater urban air. discharge. All of these affect the air in the city. In III. RESEARCH METHODS analyzed; (3) The air quality and land use planning 3.1 Big data visualization technology in different areas of Panzhihua City were compared. The main data source is based on the software This analyzes the relationship between air quality "train collector" to capture the big data of the and mountain topography, urban planning and urban National Air Quality Monitoring Network, China development. Weather, Sichuan Meteorological Bureau, Sichuan Provincial Department of Ecology and Environment, IV. AIR QUALITY EVALUATION Panzhihua Environmental Protection Bureau and SYSTEM other web pages, and classify the data sort out. Regarding the definition of air quality 3.2 Chart analysis method index AQI, Zhang Jianzhong and others pointed out Analyze and compare air quality index data that AQI is based on 6 pollutants (SO2, NO2, PM10, based on software such as Excel. PM2.5, O3, CO) in "The Temporal and Spatial 3.3 ArcGIS map analysis method Distribution Characteristics of Air Quality Index in Based on GIS, analyze the topography, aspect Beijing Area and Its Relationship with and slope of Panzhihua. Meteorological Conditions".) In the basic items, 3.4 Spatio-temporal analysis method choose the highest air quality index as the air quality At the level of temporal and spatial analysis, index. Zhu Xin and Yang Shan defined AQI as the the air quality of Panzhihua City from 2014 to 2020 result obtained by comprehensive calculation based was analysed, and the air quality changes in on the concentration of air pollutants in "Research different months and the temporal change and Analysis of Air Quality Data in Chengdu". The characteristics of different air pollutants were AQI's six pollutant separate evaluation standards are discussed. This discusses the changing law of the air called the air quality sub-index. The air quality quality in Panzhihua City in the time dimension. index standards are shown in Table 1. 3.5 At the level of spatial analysis (1) The natural topography of Panzhihua City was Table 1 Air Quality Index Standard Air Air quality Air Quality quality Impact on health Suggestion index Index category index level Satisfactory air quality, basically Normal activities for all kinds of 0～50 1 excellent no air pollution people The air quality is acceptable, but certain pollutants may have a A very small number of 51～100 2 good weaker impact on the health of a extremely sensitive people very small number of extremely should reduce outdoor activities sensitive people Children, the elderly, and Symptoms of susceptible people patients with heart and 101～150 3 Light pollution are mildly aggravated, and healthy respiratory diseases should people have irritation symptoms reduce long-term, high-intensity outdoor exercise www.ijera.com DOI: 10.9790/9622-11050505186|P a g e Li-yun ZENG, et. al. International Journal of Engineering Research and Applications www.ijera.com ISSN: 2248-9622, Vol. 11, Issue 5, (Series-V) May 2021, pp. 05-18 Children, the elderly, and patients with heart and Further aggravate the symptoms of respiratory diseases should avoid Moderately susceptible people, which may 151～200 4 long, high-intensity outdoor polluted affect the heart and respiratory exercises, and the general system of healthy people population should reduce outdoor exercises appropriately Children, the elderly, and Symptoms of heart and lung patients with heart and lung disease patients are significantly diseases should stay indoors, 201～300 5 Heavy pollution worsened, exercise tolerance is stop outdoor sports, and reduce reduced, and symptoms are outdoor sports for the general common in healthy people population Children, the elderly and the sick Healthy people have reduced should stay indoors to avoid exercise tolerance, have obvious ＞300 6 Serious pollution physical exertion, and the strong symptoms, and some general population should avoid diseases appear early outdoor activities Data souce：https://www.aqistudy.cn/ V. SPATIO-TEMPORAL ANALYSIS OF pollutants emitted by industry into the atmosphere AIR QUALITY IN PANZHIHUA CITY are of various types and complex in nature, According to research, the factors that affect the including smoke and dust, sulfur oxides,
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