Core Viewpoint - The 2024 China Ecological Environment Status Bulletin indicates continuous improvement in ecological environment quality and stable environmental safety across the country [1] Air Quality - The average concentration of PM2.5 in cities at or above the prefecture level reached 29.3 micrograms per cubic meter, a decrease of 2.7% from 2023 - The proportion of days with good air quality was 87.2%, an increase of 1.7 percentage points from 2023 - The proportion of heavily polluted days was 0.9%, a decrease of 0.7 percentage points from 2023 - The average PM2.5 concentrations in the Beijing-Tianjin-Hebei region, Yangtze River Delta, and Fenwei Plain decreased by 0.9%, 0.9%, and 4.8% respectively compared to 2023 [2] Surface Water Quality - The proportion of surface water quality in categories I to III was 90.4%, an increase of 1.0 percentage points from 2023 - The proportion of water quality in category V or worse was 0.6%, a decrease of 0.1 percentage points from 2023 - Among 210 key lakes and reservoirs, the proportion of those with good water quality was 77.1%, an increase of 2.5 percentage points from 2023 - The water quality in major river basins such as the Yangtze and Yellow Rivers remained stable at category II for several consecutive years [3] Marine Water Quality - The proportion of coastal waters meeting Class I standards in summer was 97.7%, a decrease of 0.2 percentage points from 2023 - The overall quality of nearshore marine waters remained stable, with 83.7% classified as good (Class I and II) [4] Soil Environment - The overall heavy metal content in key soil risk monitoring points showed a declining trend, indicating initial control over soil pollution - The safety utilization rate of contaminated arable land reached 92% - The rate of rural domestic sewage treatment exceeded 45% [5] Natural Ecology - The Ecological Quality Index (EQI) value was 59.95, indicating a "Category II" ecological quality, reflecting rich biodiversity and high coverage of natural ecosystems - The forest coverage rate exceeded 25% [6] Noise Environment - The daytime and nighttime compliance rates for noise environment in cities at or above the prefecture level were 95.8% and 88.2% respectively, with a slight decrease in daytime compliance [7] Nuclear and Radiation Safety - No significant nuclear or radiation incidents occurred, with the annual occurrence rate of radiation accidents remaining below one per ten thousand sources - The overall radiation environment quality was good [8] Climate Change Response - The proportion of coal consumption in total energy consumption was 53.2%, a decrease of 1.6 percentage points from 2023 - The share of clean energy sources in total energy consumption rose to 28.6%, an increase of 2.2 percentage points from 2023 - The cumulative transaction volume of carbon emission rights reached 630 million tons, with a total transaction value of 43.033 billion yuan [9] Solid Waste and New Pollutants Management - The construction of "waste-free cities" is being advanced, with 113+8 cities and regions accelerating the implementation of related tasks - New pollutant management initiatives are being launched in key river basins, focusing on specific pollutants and industries [10]

Core Viewpoint - In 2024, Suzhou's ecological environment is reported to have improved significantly, with air quality and water quality meeting or exceeding national standards, reflecting the city's commitment to environmental sustainability and quality improvement [1][2][3] Air Quality - The annual average PM2.5 concentration in Suzhou is reported at 29 micrograms per cubic meter, achieving the national secondary air quality standard for four consecutive years, with a good days ratio of 84.2% [1] - Suzhou ranks 4th in the province for PM2.5 annual average concentration, with all areas meeting national air quality standards [1] Water Quality - In 2024, all 13 county-level and above cities in Suzhou have drinking water source quality meeting or exceeding Class III standards, achieving all assessment targets [2] - The proportion of national monitoring sections with average water quality meeting or exceeding Class III standards is 93.3%, unchanged year-on-year, while the proportion meeting Class II standards increased by 10 percentage points to 63.3%, the highest in the province [2] - The overall water quality of Taihu Lake in Suzhou is classified as Class III, with a comprehensive nutrient state index of 50.4, indicating a mildly eutrophic state [2] Soil Quality - Monitoring of 46 general risk points in the national soil monitoring network shows that pollutant levels do not exceed the risk control standards, indicating overall stability in soil quality [2] Rural Environment - In 2024, the air quality in 11 monitored villages shows a good days ratio of 84.7%, with all 20 rural surface water monitoring sections meeting or exceeding Class III standards [3] Noise Environment - The overall noise environment quality in Suzhou remains stable, with daytime quality slightly declining and nighttime quality improving compared to 2023 [3] Solid Waste Management - By the end of 2024, Suzhou's hazardous waste utilization and disposal capacity is reported at 3.65 million tons per year, with 26,100 hazardous waste generating and operating units managed under the provincial solid waste management information system [3] Radiation Environment - Monitoring of various ionizing radiation factors indicates that levels are generally within the natural background range or below standard limits, with key drinking water sources and Taihu Lake meeting relevant standards [3]