Emission Characteristics and Influencing Factors of CO₂, CH₄, and CO in the Shaoxing Textile Printing and Dyeing Industrial Park

The textile printing and dyeing industry is a major economic pillar of Shaoxing City, Zhejiang Province, accounting for more than 40% of China’s total textile printing and dyeing production capacity. Consequently, reducing carbon emissions from this sector represents a critical challenge for implementing China’s “Dual Carbon” strategy. To characterize carbon emissions and identify the factors influencing them in textile printing and dyeing industrial parks, continuous mobile observations of atmospheric CO₂, CH₄, and CO mixing ratios, together with meteorological parameters, were conducted in Binhai Industrial Park (Keqiao District) and Sunduan Industrial Park (Yuecheng District) in Shaoxing City on October 29 and 30, 2024. The results showed that the atmospheric CO₂, CH₄, and CO mixing ratios in the industrial parks were approximately 20% higher than those in rural areas. The diurnal variations in atmospheric CO₂, CH₄, and CO mixing ratios were mainly influenced by regional wind patterns and the planetary boundary layer height. In addition, vehicle emissions were considered an important anthropogenic source of CO and CO₂ in the industrial parks. Based on the mass balance model, the total daily CO₂ emissions from the two industrial parks were estimated to be approximately 4.67 t a⁻¹, while the CO emissions were approximately 28.67 kg d⁻¹ CH₄ emissions from key hotspot sources, including wastewater treatment plants and gas stations, were estimated to be 9.46 t a⁻¹ and 7.25 t a⁻¹, respectively. This study provides a basis for three-dimensional integrated observations and more accurate estimation of carbon emissions from industrial parks in the future.