环保转型见成效 2026年春节期间全国空气质量明显改善

Group 1 - The core viewpoint of the article highlights a significant improvement in air quality across most regions of China during the recent Spring Festival, with the average PM2.5 concentration reaching the lowest level since 2020 [1][3] - The average PM2.5 concentration from New Year's Eve to the first day of the new year was recorded at 48.7 micrograms per cubic meter, a decrease of 35.9% compared to the same period in 2025 [3] - A total of 25 cities experienced heavy pollution days during the festival, which is a reduction of 51 cities compared to the previous year [3] Group 2 - The improvement in air quality is attributed to three main factors: higher near-surface wind speeds, increased precipitation, and reduced heating demand due to rising temperatures [5][7] - The near-surface wind speed was 0.4 meters per second higher than the previous year, and 119 cities experienced rainfall, significantly more than in 2025, aiding in the dispersion and removal of air pollutants [5] - The operational rate of thermal power heating decreased by 6 percentage points compared to the same period in 2025, contributing to lower PM2.5 pollution levels [7] Group 3 - The promotion of green transformation in the fireworks industry has also played a role, with the use of technologies such as "low-smoke, sulfur-free fireworks" reducing smoke emissions by 30% to 50% [9] - The implementation of "environmentally friendly fireworks" has helped to minimize pollution emissions from the fireworks display during the festival [9]