In the first half of this year, the quality of the nationwide surface water environment continued to improve (People's Daily)

The Ministry of Ecology and Environment recently announced the quality of the nationwide surface water environment in the first half of this year: 3641 national surface water assessment sections, excellent water quality (Class I -Ⅲ) section ratio was 85.7%, an increase of 4.0 percentage points year -on -year; 1.1%, a year -on -year decrease of 0.8 percentage points.

The seven major waters such as the Yangtze River, the Yellow River, the Pearl River, the Songhua River, the Huaihe River, Haihe River, and the Liaohe River and the northwest of the rivers, the southwest of the river and the Zhejiang Fujian rivers excellent water quality (Class I -III) was 87.3%, an increase of 3.8 percentage points year -on -year; The proportion of inferior categories was 0.8%, a year -on -year decrease of 1.0 percentage points. Among them, the water quality of the Yangtze River Basin, the Zhejiang Fujian film, the southwest of the river, the northwest of the rivers and the Pearl River Basin; the water quality of the Yellow River, Liaohe River and the Huaihe River Basin; the Haihe River and Songhua River Basin are mild pollution.

Among the 20 key lakes (libraries) monitored, excellent water quality (Class I -III) of lakes accounted for 76.2%, an increase of 3.3 percentage points year -on -year; One percentage point. In the lakes (libraries) of the 200 monitoring status, 10 moderate rich nutrition, accounting for 5.0%; 41 mild nutrition, accounting for 20.4%; the remaining lakes (libraries) are medium nutritional or poor nutritional status. Among them, Taihu and Chaohu are mild pollution and mild nutrition. The main pollution indicators are total phosphorus; Dianchi Lake is mild pollution, mild nutrition, and the main pollution indicators are chemical oxygen demand and total phosphorus; Erhai and Danjiangkou Reservoir The water quality is excellent and medium nutrients; the water quality of Baiyangdian is good and medium nutrients.

Source 丨 People's Daily reporter 丨 Kou Jiangze

Edit 丨 Shangyu review 丨 Zhang Bing

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