Contribution of dust emissions from farmland to particulate matter concentrations in North China Plain: Integration of WRF-Chem and WEPS model

IF 10.3 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Haopeng Zhang , Feng Wang , Shenghui Zhou , Tianning Zhang , Minghui Qi , Hongquan Song
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引用次数: 0

Abstract

Wind erosion from farmland is a significant contributor to atmospheric particulate matter, particularly PM10 (atmospheric particulate matter with an aerodynamic diameter ≤ 10 μm), in regions with intensive agricultural activities such as the North China Plain (NCP). However, the specific impact of farmland dust emissions on regional air quality remains underexplored. This study integrated the Wind Erosion Prediction System (WEPS) model with the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem) to investigate the effect of agricultural dust emissions on PM10 concentrations in the NCP. Results indicated that wind erosion from agricultural fields in the NCP produced approximately 33.8 × 105 tons of PM10 annually. These emissions are predominantly concentrated during the winter months from October to next April, with the highest emissions occurring in Hebei, Henan, and Shandong provinces. Using scenario experiments with the WRF-Chem model, we further quantified the contribution of agricultural dust emissions to atmospheric PM10 concentrations. The findings revealed that farmland emissions contributed approximately 13% of atmospheric PM10 concentrations during winter months (January and December), underscoring the significant role of agricultural activities in regional air pollution. This study highlights the importance of including farmland wind erosion into chemical transport models to more accurately understand and mitigate the effects of agricultural activities on atmospheric pollution in agricultural regions worldwide.

Abstract Image

Abstract Image

华北平原农田扬尘排放对颗粒物浓度的贡献:WRF-Chem和WEPS模型的整合
在华北平原等农业活动密集的地区,农田风蚀是大气颗粒物的重要来源,尤其是PM10(空气动力学直径 ≤ 10 μm的大气颗粒物)。然而,农田粉尘排放对区域空气质量的具体影响仍未得到充分探讨。本研究将风蚀预测系统(WEPS)模型与气象研究与预报耦合化学模型(WRF-Chem)相结合,研究了农业扬尘排放对NCP PM10浓度的影响。结果表明,NCP农田风蚀每年产生的PM10约为33.8 × 105 t。这些排放主要集中在10月至次年4月的冬季,其中河北、河南和山东的排放量最高。通过WRF-Chem模型的情景实验,我们进一步量化了农业粉尘排放对大气PM10浓度的贡献。研究结果显示,在冬季月份(1月和12月),农田排放约占大气PM10浓度的13. %,强调了农业活动在区域空气污染中的重要作用。这项研究强调了将农田风蚀纳入化学运输模型的重要性,以更准确地了解和减轻全球农业地区农业活动对大气污染的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Environment International
Environment International 环境科学-环境科学
CiteScore
21.90
自引率
3.40%
发文量
734
审稿时长
2.8 months
期刊介绍: Environmental Health publishes manuscripts focusing on critical aspects of environmental and occupational medicine, including studies in toxicology and epidemiology, to illuminate the human health implications of exposure to environmental hazards. The journal adopts an open-access model and practices open peer review. It caters to scientists and practitioners across all environmental science domains, directly or indirectly impacting human health and well-being. With a commitment to enhancing the prevention of environmentally-related health risks, Environmental Health serves as a public health journal for the community and scientists engaged in matters of public health significance concerning the environment.
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