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Potential pollution risk assessment of phosphate fertilizer manufacturing site based on multi-source geographic data: A case study of Kunming City |
MENG Dan1,2, YANG Xiao-mei1,2, LIU Yue-ming1,2, ZHOU Rui3, WANG Zhi-hua1,2, LIU Xiao-liang1,2, ZHANG Jun-Yao1,2 |
1. State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Beijing 100101, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China; 3. IMAGESKYBEIJING (Beijing) Science and Technology LTD, Beijing 100086, China |
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Abstract A rapid assessment method that combines pollution source range, propagation path, and sensitive receptor was proposed to evaluate the potential pollution risk of the living and ecological environment around the phosphate fertilizer manufacturing site in Kunming. The results revealed that the phosphate fertilizer manufacturing sites in Kunming were mainly located in the flat terrain areas of Anning and Jinning District, situated southwest of Dianchi Lake. The pollution range of non-point sources was found to be closely related to the operating years and scale of the phosphate fertilizer manufacturing sites. The longer the operating years and the larger the operating scale of these sites, the greater their impact on the surrounding environment. Notably, two phosphate fertilizer manufacturing enterprises exhibited the highest risk coefficients, with values of 14.51 and 11.37, respectively. These enterprises have been operating for 30 years and 36 years, with large and medium-scale operations, respectively. The higher the propagation path grade of the phosphate fertilizer manufacturing site, the easier it is for pollution to spread to the surrounding areas. The largest propagation area of the phosphate fertilizer manufacturing site was found to be 78.54km². Moreover, areas with higher sensitive receptor grades showed a greater impact on the potential risk of the surrounding region. The highest sensitive receptor range caused by the phosphate fertilizer manufacturing site covered an area of 70.14km². Based on the comprehensive risk assessment, it was determined that the pollution sources from the phosphate fertilizer manufacturing site in Kunming pose significant potential risks to the ecological environment of the Dianchi Basin, characterized by its low altitude and flat terrain. Additionally, the population gathering area in the east is also at risk, highlighting the need to strengthen pollution control and ecological protection measures in this region.
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Received: 21 December 2022
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