On October 28th, the Ministry of Ecology and Environment announced to the media the national surface water environmental quality in the third quarter of 2023 (July-September) and January-September.

Overall situation

In the third quarter, among the 3,641 national surface water assessment sections, the proportion of sections with excellent water quality (Class I-III) was 77.3%, down 1.7 percentage points year-on-year; The proportion of inferior V section was 0.9%, down 0.2 percentage points year-on-year. The main pollution indicators are chemical oxygen demand, permanganate index and total phosphorus.

From January to September, among 3,641 national surface water assessment sections, the proportion of sections with excellent water quality (Class I-III) was 87.1%, up 0.8 percentage points year-on-year; The proportion of inferior V section was 0.7%, down 0.2 percentage points year-on-year. The main pollution indicators are chemical oxygen demand, permanganate index and total phosphorus.

Figure 1 Proportion of surface water quality categories in China from January to September

Water quality status of major rivers

In the third quarter, the proportion of sections with excellent water quality (Class I-III) in seven major river basins, such as Yangtze River, Yellow River, Pearl River, Songhua River, Huaihe River, Haihe River and Liaohe River, and rivers in the northwest, southwest and Zhejiang and Fujian provinces was 80.5%, down 1.8 percentage points year-on-year; The proportion of inferior V section was 0.6%, down 0.3 percentage points year-on-year. The main pollution indicators are chemical oxygen demand, permanganate index and total phosphorus. Among them, the water quality of southwest rivers, northwest rivers and Yangtze River basin is excellent; The water quality of the rivers in Zhejiang and Fujian, the Yellow River Basin and the Pearl River Basin is good; Liaohe, Haihe, Huaihe and Songhua river basins are slightly polluted.

From January to September, the proportion of sections with excellent water quality (Grade I-III) in the seven major river basins, such as the Yangtze River, Yellow River, Pearl River, Songhua River, Huaihe River, Haihe River and Liaohe River, and the rivers in the northwest, southwest and Zhejiang and Fujian provinces was 89.2%, up 0.7 percentage points year-on-year; The proportion of inferior V section was 0.5%, down by 0.2 percentage points year-on-year. The main pollution indicators are chemical oxygen demand, permanganate index and five-day biochemical oxygen demand. Among them, the water quality of the Yangtze River basin, Zhejiang and Fujian rivers, southwest rivers, northwest rivers and the Pearl River basin is excellent; The water quality of the Yellow River, Liaohe River, Huaihe River and Haihe River basins is good; Songhua river basin is slightly polluted.

Figure 2 Proportion of water quality categories in seven major river basins, southwest and northwest rivers and rivers in Zhejiang and Fujian from January to September.

Water quality and nutritional status of key lakes (reservoirs)

In the third quarter, among the 209 key lakes (reservoirs) monitored, the number of lakes and reservoirs with excellent water quality (Class I-III) accounted for 72.2%, up 4.1 percentage points year-on-year; The number of lakes and reservoirs with inferior grade V water quality accounted for 3.8%, down 1.0 percentage points year-on-year. The main pollution indicators are total phosphorus, chemical oxygen demand and permanganate index. Among the 204 lakes (reservoirs) monitoring the nutritional status, 18 are moderately eutrophic, accounting for 8.8%; 50 were mildly eutrophic, accounting for 24.5%; The rest of the lakes (reservoirs) are in the state of medium nutrition or poor nutrition. Among them, Taihu Lake is slightly polluted and slightly eutrophic, and the main pollution index is total phosphorus; Chaohu Lake is slightly polluted and moderately eutrophic, and the main pollution index is total phosphorus. Dianchi Lake is moderately polluted and moderately eutrophic, and the main pollution indexes are chemical oxygen demand, total phosphorus and permanganate index. Erhai Lake has good water quality and moderate nutrition; The water quality of Danjiangkou reservoir is excellent and medium nutrition; Baiyangdian Lake is slightly polluted (mainly affected by floods) and moderately nutritious, and the classification index is dissolved oxygen.

From January to September, among the 209 key lakes (reservoirs) monitored, the number of lakes and reservoirs with excellent water quality (Class I-III) accounted for 74.6%, up 0.8 percentage points year-on-year; The number of lakes and reservoirs with inferior grade V water quality accounted for 4.3%, down 0.5 percentage points year-on-year. The main pollution indicators are total phosphorus, chemical oxygen demand and permanganate index. Among the 205 lakes (reservoirs) whose nutritional status was monitored, 7 were moderately eutrophic, accounting for 3.4%; 50 were mildly eutrophic, accounting for 24.4%; The rest of the lakes (reservoirs) are in the state of medium nutrition or poor nutrition. Among them, Taihu Lake and Chaohu Lake are slightly polluted and slightly eutrophic, and the main pollution index is total phosphorus; Dianchi Lake is slightly polluted and moderately eutrophic, and the main pollution indexes are chemical oxygen demand, total phosphorus and permanganate index. The water quality of Erhai Lake and Baiyangdian Lake is good and moderately nutritious. The water quality of Danjiangkou Reservoir is excellent and moderate.

Table 1 Water quality and nutritional status of six lakes (reservoirs) from January to September.

Fig. 3 Water quality and nutritional status of six lakes (reservoirs) from January to September.

Rank of national surface water assessment sections in prefecture-level and above cities

From January to September, among the cities at the prefecture level and above in China, the water environmental quality of national surface water assessment sections in 30 cities such as Liuzhou, Guilin and Kizilsu Kirgiz Autonomous Prefecture was relatively good (from 1st to 30th), while the water environmental quality of national surface water assessment sections in 30 cities such as wujiaqu city, Shangqiu and Tongliao was relatively poor (from 1st to 30th). See Table 1-2.

The changes of water environmental quality of national surface water assessment sections in 30 cities, such as Shihezi, Baicheng and Xinzhou, are relatively good (from 1st to 30th), while the changes of water environmental quality of national surface water assessment sections in 30 cities, such as Hangzhou, Taizhou and Yancheng, are relatively poor (from 1st to 30th). See attached table 3-4.

Schedule 1

From January to September, 2023, the water environment quality of the national surface water assessment section ranked the top 30 cities and their water bodies.

Schedule 2

From January to September, 2023, the water environment quality of the national surface water assessment section ranked the last 30 cities and their water bodies.

Note: The water quality of the water body marked with * in the table meets Class I or Class II of Environmental Quality Standard for Surface Water (GB3838-2002)Ⅰ); In June and July, the section of Liutuan Bridge in Bailang River in Weifang City was seriously disturbed by human beings, and all the indexes of this section in that month were replaced by the worst value.

Schedule 3

From January to September, 2023, the changes of water environment quality in the national surface water assessment section ranked the top 30 cities and their water bodies.

Note: A negative value indicates that the environmental quality of surface water is getting better year-on-year, while a positive value indicates that it is getting worse year-on-year.

Schedule 4

From January to September, 2023, the changes of water environment quality in the national surface water assessment section ranked the last 30 cities and their water bodies.

Note: The water quality of the water bodies marked with * in the table meets Class I or Class II of Environmental Quality Standard for Surface Water (GB3838-2002)Ⅰ).

Xinhua News Agency, Beijing, April 10 (Reporter Dong Ruifeng, Li Heng) The reporter learned from the National Health and Wellness Commission on April 10 that the Comprehensive Group of Joint Prevention and Control Mechanism of the State Council recently issued the Vaccination Work Plan to Respond to the Recent Infection in Covid-19, and made corresponding arrangements for the target population, time interval and vaccine selection. The plan is clear, and the focus of vaccination at this stage is to fill the gap in immune level for different target groups and further reduce the risk of severe illness and death.

According to the plan, people who are not infected and have not completed the established immunization program will complete the follow-up vaccination according to the established immunization program and its time interval. This part of the population includes people aged 3 to 17 who are uninfected and have not completed the basic immunization, people over 18 who are uninfected and have not completed the first dose of booster immunization, and people over 18 who are uninfected and have not completed the second dose of booster immunization (high-risk people with infection, people over 60 years old, people with serious basic diseases and people with low immunity).

Among them, for people over 18 who have completed basic immunization, the interval of the first dose of booster immunization is adjusted to more than 3 months.

For people who have been infected and have not completed basic immunization, according to the plan, one dose of vaccine can be inoculated after 3 months of infection.

Experts from the Comprehensive Group of the State Council Joint Prevention and Control Mechanism said that the overall epidemic situation in the country is sporadic, but the Covid-19 has not disappeared, and the spread of the virus among people still persists. With the change of epidemic situation, whether vaccination is needed at this stage should be determined according to infection, previous vaccination history, age, physical condition and other factors.

According to reports, the protective antibodies obtained by vaccination and infection will decay with time. From a global perspective, it is a common understanding that Covid-19 should be vaccinated three months after infection, which is beneficial to provide better protection for people with high risk of severe illness and death in the subsequent epidemic.

There are many technical routes in China, and Covid-19 vaccine has been approved for use one after another. The results show that sequential immunization can provide more comprehensive protection for individuals.

　　[official map of car home new car] Recently, Dodge officially released the last model of the Last Call series-the Dodge Challenger SRT Demon 170 version. The biggest highlight of this model is the power upgrade. For example, when the vehicle uses E85 ethanol gasoline, its maximum power can reach 1025 horsepower, and its linear acceleration time of a quarter mile (0-402 meters) is only 8.91 seconds, which is also officially certified by NHRA. The overseas price of the new car is 96,666 US dollars (about 665,200 yuan), and it is planned to produce 3,300 vehicles, including 3,000 in the United States and 300 in Canada. In addition, the official also said that this will be the last pure fuel version of Dodge.

　　Compared with the previous Demon model, the appearance design of the new car has not changed much. The most obvious thing is that the wide-body wheel cover of the front fender has been cancelled, and the front of the car still uses the classic four-circle LED light group. The inner light group is designed as an air inlet, and the front enclosure adopts a three-part shape. The internal intercooler and other heat dissipation components are unobstructed. In addition, the Demon Demon LOGO on the car body has also been redesigned, with a "170" neck tattoo and yellow eyes, all of which allude to E85 ethanol gasoline. In addition, the new car will also provide 14 color choices, including traditional blue, purple and green. In addition, the new car can also provide black body flowers as an ornament.

　　It is worth mentioning that the "170" in the name of the new car represents that the alcohol content of E85 ethanol gasoline is 170, and this set of numbers is also a tribute to Direct Connection Hellephant Crate, whose engine code is C170.

　　In terms of interior, the new car has a variety of styles to choose from. For example, if you pay attention to the performance of the car, you can choose the front seat, cancel the rear seat, cancel the trunk carpet, sound insulation materials, speakers and other configurations. For consumers who need to drive everyday, the new car can choose interior decoration and seats with black Alcantara, and can also choose ventilation/heating, steering wheel heating, and even stereo and skylight with 18 speakers.

　　Then the exciting upgrade point of Demon 170 model lies in the power system. The new car will adopt a 6.2-liter supercharged V8 engine, which has been redesigned. First, the displacement of the supercharger has been increased from 2.7 liters to 3.0 liters, and the supercharged pressure of the supercharger has been increased to nearly 1.5bar. The engine has also been fully strengthened. All the operations make the Demon 170 burst into a maximum power of 1,025 HP at 6500rpm and a maximum torque of 1,280 at 4200rpm when using E85 ethanol gasoline. Even if ordinary E10 ethanol gasoline is used, the new car will have a maximum power of 900 HP and a maximum torque of 1,098 Nm.

　　With the support of the above book data, the new car’s 0-96km/h acceleration time is only 1.66 seconds, the quarter mile (402 meters) acceleration time is only 8.91 seconds, and the tail speed is 243.23km/h, which is 0.74 seconds and nearly 18km/h higher than Demon. Of course, the above amazing performance can only be completed in a professional linear acceleration track.

　　In addition, in order to make the Demon 170 engine have better power performance, the new car is also equipped with an intelligent engine management system, which can judge the ethanol content in gasoline, adjust the injection and ignition time according to the content time, and optimize the power output. Even there is a special display screen with ethanol ratio on the dashboard. When the ethanol content on the display screen exceeds 65%, the engine can provide a complete 1025 horsepower.

　　In terms of transmission system, the new car still matches the eight-speed automatic gearbox, and the Demon 170 also comes standard with the newly upgraded TransBrake 2.0 starting control system. It allows the driver to slam on the accelerator and then pull the shift paddle to complete the corresponding ejection start; The torque output of the engine can also be adjusted in increments of one tenth of a second to achieve the most accurate power release.

　　Like Demon, the 170 will also provide the option package "Direct Connection" for linear acceleration, which includes the seat belt fixing rod, the rear carbon fiber panel without the rear seat, the deceleration umbrella package and the Mickey Thompson ET Street R linear acceleration tire with the model of 315/50 R17, while the front wheel model is 245/55 R18. Of course, the suit can’t be used in daily life, and it also provides regular street tires for car owners when it expires. Demon 170 has also been greatly optimized in the weight reduction of the car body. For example, it will provide wheels made of forged aluminum and carbon fiber, which can reduce the weight by 14.56 kg in total.

　　In addition, the suspension of the new car has also been upgraded. Bilstein adaptive shock absorber is used in the suspension, which increases the height of the rear of the car by 9.9mm, has softer springs and anti-roll bars, and also provides a draggable adjustment interface in the car, which will set the hardness of the front and rear suspension damping, which can improve the weight transfer during acceleration.

　　Demon 170 is priced at $96,666, and it is planned to produce 3,300 vehicles, including 3,000 in the United States and 300 in Canada. However, the final output of the new car depends on the production capacity of the factory. Dodge said that it will only produce Demon 170 from July to December 31, 2023. New car orders will be accepted on March 27th, 2023. At the same time, the government also gives Demon owners some favorable policies. For example, if the consumer buys the 50th Demon, then if the Demon owner buys the Demon 170, the 170 model will also be the 50th one through the VIN matching in official website. After purchasing Demon 170, the owner will also get an owner’s bag, which includes a demon LOGO sober-up device engraved with the owner’s name and vehicle VIN, coasters with demon badges and ice cubes of whisky, rock glasses, badge covers with Demon 170 supercharger, etc. (Text/car home graduated)