综合一区欧美国产,99国产麻豆免费精品,九九精品黄色录像,亚洲激情青青草,久久亚洲熟妇熟,中文字幕av在线播放,国产一区二区卡,九九久久国产精品,久久精品视频免费

The Yellow River, China's second longest, was the country's most polluted river in the first half of this year, due to a lack of water flow, said the State Environmental Protection Administration (SEPA) here Tuesday.

In a report on the water quality of China's major rivers, SEPA said that of the Yellow River was poor, with 39.5 percent lower than Grade 5, the lowest grade.

According to the report, one of the major pollution indexes is COD, or Chemical Oxygen Demand, a measure of pollutants in natural and waste water to assess the strength of waste such as sewage and industrial discharge.

The report ranked the seven major rivers in China in terms of pollution degree in the first six months of this year. The Yellow River took first place and China's longest river, the Yangtze, sixth place.

The report said that the poor quality of the Yellow River water resulted from the reduction of water flow this year, which dropped 32-50 percent from the average of previous years.

Earlier statistics from the Ministry of Water Resources indicated an unusually severe drought in the Yellow River Valleys and water flow in its tributaries was down to the lowest level in 50 years.

The 5,464-km Yellow River originates in the Qinghai-Tibet Plateau and winds its way through eight provinces and autonomous regions before reaching the Bohai Sea in east China. It provides water to 12 percent of China's population and irrigates 12 percent of all its arable land.

The latest monthly report showed that the water quality of the Yellow River improved in July, but the tributary water quality was still in bad condition.

The report also said that nitrogen and phosphorus pollution was serious in China's major lakes including Taihu, Dianchi and Chaohu lakes, with the water quality lower than Grade 5.

Close

Today's Top News		Top National News
+Farmer attempting self-immolation hospitalized in Beijing ( 2003-09-15) +No grounds to revalue yuan, experts declare ( 2003-09-15) +US$33 billion in foreign funds attracted ( 2003-09-15) +WTO trade talks collapse in Mexico ( 2003-09-15) +Experts: SARS may re-emerge ( 2003-09-15)		+Floods claim 64 lives in northwest China ( 2003-09-15) +Nine victims of Japan's chemical weapons leave hospital ( 2003-09-15) +Guangdong guard against return of SARS ( 2003-09-15) +Farmer attempting self-immolation hospitalized in Beijing ( 2003-09-15) +Marriage boom expected ( 2003-09-15)