“赤峰蓝”已成“常态蓝”

Group 1 - The core viewpoint of the article highlights the improvement in air quality in Chifeng City, with a target of 354 days of good air quality by 2025, including 216 days rated as "excellent," which is an increase of 18 days compared to 2024, resulting in a good air quality ratio of 97%, up by 1.4 percentage points year-on-year [1] - The average PM2.5 concentration is projected to decrease to 20 micrograms per cubic meter, with these two key indicators ranking among the best in the autonomous region, indicating a steady enhancement in ecological environment quality [1] - The improvement in air quality is attributed to the implementation of a precise ecological environment zoning and control system, which is essential for achieving a "normal blue" sky [1] Group 2 - Chifeng City is focusing on water quality improvement, coordinating pollution control with ecological restoration, and maintaining the effectiveness of river pollution outlet remediation [2] - By 2025, the city aims to complete sewage treatment in 170 administrative villages, with a total of 658 villages having completed sewage management [2] - The city is also conducting special actions targeting key areas such as water, air, and soil, cracking down on illegal discharges and addressing environmental issues affecting local communities [2]