“十四五”收官年，南京生态环境质量多项指标创新优

Core Viewpoint - Nanjing's ecological environment has shown significant improvement, achieving a "stable and better" status, marking a crucial milestone in the construction of a beautiful Nanjing by 2025 [1] Air Quality Improvement - PM2.5 concentration has dropped to 27.1 micrograms per cubic meter, ranking third in the province and first in the Nanjing metropolitan area, with a year-on-year improvement of 4.2% [2] - The proportion of days with good air quality reached 87.4%, the highest in the province, increasing by 5 days year-on-year [2] - Six air quality monitoring indicators have achieved full compliance for the first time, representing a historic breakthrough [2] Pollution Reduction Efforts - Continuous efforts in source reduction and green transformation have led to significant achievements, including the completion of ultra-low emission transformations for key enterprises and the implementation of 860 annual air quality improvement projects [3] - A total of 3,841 old diesel trucks have been eliminated, and 13 new energy vehicle teams have been established [3] - The number of environmental complaints has decreased by 70.9%, from 23,451 in 2020 to 6,816 in 2025, indicating effective resolution of prominent environmental issues [3] Water Quality Enhancement - By 2025, 100% of the water quality at 42 national and provincial monitoring points will be rated as good, with similar results for 18 major tributaries and 11 centralized drinking water sources [4] - The water quality of the Yangtze River main stream remains stable at Class II, with significant improvements in the Taihu Basin [4] Wastewater Treatment Improvements - The city has enhanced its wastewater treatment capacity by 200,000 tons per day and completed upgrades to 32 wastewater treatment plants [5] - The concentration of COD in wastewater treatment plants is expected to improve by approximately 15% compared to 2024, with a centralized collection and treatment rate of over 90% [6] Ecological Protection and Restoration - Over 80% of wetlands along the Yangtze River in Nanjing are protected, with 270 species of birds recorded, including rare species [7] - The city has established 12 ecological safety buffer zones and 5 ecological island pilot areas, contributing to biodiversity [8] Future Plans - Nanjing aims to continue its ecological protection efforts, focusing on high-quality development and improving environmental quality through coordinated pollution reduction and carbon neutrality strategies [8]