Home News No serious pollution in the whole year, Beijing Ecological Governance Report Card Released|Beijing|PM2.5|Ecology_Sina Technology_Sina.com

No serious pollution in the whole year, Beijing Ecological Governance Report Card Released|Beijing|PM2.5|Ecology_Sina Technology_Sina.com

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Original title: No serious pollution in the whole year, Beijing ecological governance report card released

The annual average concentration of PM2.5 enters “30+” for the first time

70 newly recorded species

On May 13, Beijing Municipal Bureau of Ecology and Environment issued the “Communiqué on the State of Beijing’s Ecological Environment in 2020” (hereinafter referred to as the “Communiqué”) to summarize and review the state of the city’s ecological environment in 2020. The “Communiqué” shows that the city’s air quality will be significantly improved in 2020, and there will be no serious pollution days throughout the year. During the same period, the city’s surface water quality has improved significantly, the soil environment is generally good, the acoustic environment quality remains stable, and the radiation environment quality remains normal. The improvement of the ecological environment has laid the foundation for Beijing’s biodiversity. Field investigations have found that there are 70 newly recorded species in Beijing, 12 of which are newly recorded species in China.

The annual average concentration of PM2.5 enters “30+” for the first time

The improvement of Beijing’s ecological environment quality is first reflected in the dynamic changes of air quality. In 2020, the annual average concentration of fine particulate matter (PM2.5) in the air in the city is 38 micrograms/cubic meter, which is the first time it has entered the “30+” category. In 2020, the city’s air quality standards will be met for 276 days, and the proportion of met standards will be 75.4%, an increase of 90 days from 2015. The number of days of heavy air pollution was 10 days, 36 days less than in 2015. There were no serious pollution days throughout the year.

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From the perspective of regional distribution, the eight districts of Miyun, Huairou, Yanqing, Mentougou, Changping, Pinggu, Shunyi, and Fangshan took the lead in reaching the national secondary standards, accounting for about 80% of the city area.

The annual average concentrations of sulfur dioxide (SO2), nitrogen dioxide (NO2) and inhalable particulate matter (PM10) are 4 micrograms/cubic meter, 29 micrograms/cubic meter and 56 micrograms/cubic meter respectively, which all meet the national secondary standards. Compared with 2015, the city’s annual average concentration of PM2.5, SO2, NO2 and PM10 decreased by 52.9%, 70.4%, 42% and 44.8% respectively. The 24-hour average 95th percentile concentration value of carbon monoxide is 1.3 mg/m3, which meets the national secondary standard; the maximum 8-hour moving average 90th percentile concentration value of ozone per day is 174 μg/m3.

Over the same period, the surface water, soil, and acoustic environment have also been improved simultaneously. The annual average concentration of major pollution indicators continues to decrease, the inferior Class V water bodies in key river basins are further reduced, and the state-controlled section inferior Class V water bodies are completely eliminated; agricultural land is subject to classified management, construction land is subject to risk control, and soil environmental risks are effectively controlled; Class 1 The annual average of equivalent sound levels in the daytime in the area, Class 2 area, Class 3 area and Class 4a area reach the national standard.

“In 2020, the city’s ecological environment status will be rated as’good’, and the ecological environment condition index (EI) will be 70.2, which has continued to improve for six consecutive years.” Liu Wei, Director of the Ecological Environment Monitoring Division of the Municipal Ecological Environment Bureau, introduced that compared with 2015, The overall city’s ecological environment index increased by 9.3%. In terms of the distribution of functional areas, the ecological environment index (EI) of the capital’s functional core area increased by 15.1%, the central city area increased by 14.4%, the increase rate of the plain area reached 16.9%, and the ecological environment index of the ecological conservation area increased by 7.8%.

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70 newly recorded species

Beijing’s complex topography, diverse habitat types, and rich biodiversity play a decisive role in the Beijing-Tianjin-Hebei ecological pattern. The gradual improvement of the city’s ecological environment has also laid a good foundation for biodiversity.

It is understood that in 2020, 82 types of natural and semi-natural ecosystems in Beijing have been recorded on the spot, including forests, shrubs, grasses, meadows and grasslands, and wetlands. A total of 5,086 species of various species have been recorded. Field investigations revealed 70 newly recorded species in Beijing, 12 of which are newly recorded species in China.

Among the 70 newly recorded species found in the field survey, there are 3 vascular plants, 16 insects, 40 bryophytes, and 11 macrofungi. Among the 12 newly recorded species in China, there are 11 macrofungi and 1 insect. Kind. The investigation recorded 19 invasive alien species included in the four batches of “List of Invasive Alien Species in China”.

“Biodiversity has a comprehensive indicator effect on the quality of the ecological environment. Field investigations have found that some indicator species that are sensitive to environmental quality have expanded in their distribution range.” said Cao Zhiping, director of the Natural Ecology Protection Division of the Municipal Bureau of Ecological Environment The aquatic organisms with high water quality requirements such as turtles are distributed in Huairou, Miyun, Yanqing and a few central urban areas, which to a certain extent shows the effect of comprehensive river management and ecological restoration on improving the water environment.

Starting in 2020, the Beijing Municipal Bureau of Ecology and Environment has organized a city-wide biodiversity survey. This city-wide, multi-group biodiversity survey is the first in the Beijing department. It is estimated that it will take 3-5 years to get a preliminary understanding of the background of biodiversity in Beijing, and gradually incorporate biodiversity monitoring into routine ecological monitoring. The survey mainly relies on manpower, and the sites mainly select important ecological spaces such as nature reserves, woodlands, natural parks, virgin forests, and wetlands.

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Beijing Commercial Daily reporter Tao Feng Liu Hanlin

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