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  1. Home
  3. Insight Into The Significant Impact Of Ozone-depleting Substances Emissions From Animal Dung Burning On Stratospheric Ozone Depletion Potential In Qinghai-tibet Plateau Over The Past 20 Years.
  1. Home
  3. Insight Into The Significant Impact Of Ozone-depleting Substances Emissions From Animal Dung Burning On Stratospheric Ozone Depletion Potential In Qinghai-tibet Plateau Over The Past 20 Years.

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Insight into the significant impact of ozone-depleting substances emissions from animal dung burning on stratospheric

Min Yan1, Zhenxing Shen1, Qingzhu Tian2

  • 1Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Key laboratory of Environmental Monitoring and Forewarning of trace Pollutions, Shaanxi Environmental Monitoring Center Station, Xi'an 710054, China.

Journal of Hazardous Materials
|January 20, 2026

View abstract on PubMed

Summary
This summary is machine-generated.
Keywords:
Emission inventoryOzone depletionQinghai-Tibet PlateauResidential solid fuels

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Solid fuel combustion in the Qinghai-Tibet Plateau releases ozone-depleting substances (ODSs) that impact stratospheric ozone. Animal dung burning shows higher ODS emission factors but comparable ozone depletion potential to coal, with VSLS contributing significantly to emissions.

Area of Science:

  • Atmospheric Chemistry
  • Environmental Science
  • Climate Change Research

Background:

  • Residential solid fuel combustion, particularly in high-altitude regions like the Qinghai-Tibet Plateau (QTP), releases significant amounts of ozone-depleting substances (ODSs).
  • The QTP's unique geography facilitates the transport of these pollutants into the stratosphere, potentially impacting global ozone levels.
  • Understanding the specific ODSs emitted and their contribution to ozone depletion potential (ODP) is crucial for effective environmental policy.

Purpose of the Study:

  • To quantify ODSs emission factors from traditional stoves burning animal dung and bituminous coal in the QTP.
  • To assess the ozone depletion potential (ODP) of emissions from these solid fuels.
  • To analyze the annual trends of ODSs and ODP-equivalent emissions in the QTP from 2002-2022 and evaluate the role of very short-lived substances (VSLSs).

Main Methods:

  • Conducted combustion experiments using traditional stoves to measure ODSs emissions.
  • Calculated ODSs emission factors (∑EFODS) and ozone depletion potential (ODP) in trichlorofluoromethane equivalent (CFC-11-eq).
  • Analyzed annual emission trends and spatial inequalities using Gini coefficients for per capita GDP related to ODSs.

Main Results:

  • Animal dung burning exhibited higher ODS emission factors (9.0-21.6 mg/kg) than bituminous coal (4.1-5.0 mg/kg).
  • Both fuel types showed comparable ODP values (0.8-3.6 mg/kg vs. 1.3-1.5 mg/kg CFC-11-eq).
  • Annual ODS and CFC-11-eq emissions averaged 186.9 ± 16.0 and 18.5 ± 1.2 tons, respectively, showing a general decline with fluctuations; VSLSs constituted over 40% of ODS emissions but less than 5% of CFC-11-eq emissions.

Conclusions:

  • VSLSs from the QTP may be underestimated in their stratospheric ozone depletion impact when using global-average ODP values.
  • Despite the Montreal Protocol, CFC-11-eq emissions from animal dung burning have shown a relative increase in recent years.
  • While spatial economic inequalities in the QTP have reduced, they remain significant concerning ODSs emissions.