What question did this study set out to answer?

To assess the long-term exposure and health impacts of PM2.5 and PM10 from desert dust in the Taklamakan region.

March 25, 2026Open Access

Extreme desert dust events and chronic PM2.5/PM10 exposure: A public health risk assessment in the Taklamakan region, China

MFMikalai FilonchykLanzhou Jiaotong University MPMichael P. PetersonUniversity of Nebraska at Omaha YHYing HeSouth China Agricultural University

Key Points

To assess the long-term exposure and health impacts of PM2.5 and PM10 from desert dust in the Taklamakan region.
Analyzed long-term PM2.5 and PM10 data from 2015 to 2024
Utilized national air quality monitoring network observations
Conducted spatial and seasonal assessments of air pollution
Evaluated population-weighted exposure for health risk analysis
PM2.5 and PM10 levels exceeded WHO guidelines by 15-20 times on most days
Seasonal peaks in spring show consistent patterns of elevated dust concentrations
Low PM2.5/PM10 ratios indicate dominance of coarse mineral dust from natural sources
Kashgar and Aksu have the highest cumulative pollution exposure, while Hotan has the worst per-capita exposure

Abstract

• Long-term PM 2.5 and PM 10 data reveal chronic desert dust exposure. • Seasonal peaks show dominant spring dust storms over Taklamakan Desert. • PM 2.5 /PM 10 ratio indicates natural dust as the main pollution source. • Population-weighted exposure highlights severe health burden. The Taklamakan Desert is one of the largest sources of mineral dust aerosols in Eurasia and exerts a strong influence on air quality and public health in surrounding regions. This study presents a comprehensive spatiotemporal assessment of PM 2.5 and PM 10 pollution across five prefecture-level administrative units surrounding the Taklamakan Desert (Korla, Aksu, Kashgar, Hotan, and Kizilsu) during 2015–2024, using long-term observations from China’s national air quality monitoring network. Seasonal variability, long-term trends, extreme pollution events, and population exposure were systematically analyzed. The results reveal persistently elevated particulate matter concentrations, with PM 2.5 and PM 10 levels exceeding World Health Organization air quality guidelines by approximately 15–20 times on most observation days, indicating chronic rather than episodic exposure. A pronounced and recurrent spring maximum dominates the seasonal cycle across all regions. Consistently low PM 2.5 /PM 10 ratios (∼0.35) demonstrate the predominance of coarse mineral dust and confirm the dominant role of natural desert emissions rather than local anthropogenic sources. Extreme pollution events occur frequently and often synchronously across multiple prefectures, reflecting large-scale dust outbreaks amplified by the orographically enclosed morphology of the Tarim Basin. Population-weighted exposure analysis reveals strong spatial inequality in health burden. Kashgar and Aksu experience the highest cumulative exposure due to large population size, while Hotan represents the most severe per-capita exposure hotspot owing to persistently extreme concentrations. Overall, the findings demonstrate that air pollution and associated health risks in desert-margin regions are primarily governed by natural dust processes and regional atmospheric conditions, underscoring the need for improved early-warning systems and adaptive public health strategies in arid environments

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