Home / Environment / News Tools: Save | Print | E-mail | Most Read | Comment
Algae in Yangtze tributary affects water for thousands
Adjust font size:

Large areas of algae bloom in an upper Yangtze River tributary have forced thousands of residents in the central province of Hubei to stop drawing drinking water from the river.

The bloom first appeared on Monday in the Xiangxi River. By Friday, it had expanded from 5 km to about 23 km, stretching from Gaoyang Township of Xingshan County to Zigui County, where it converged with the Yangtze River.

The river water has turned emerald green and opaque. Experts from the Yangtze River pollution regulatory agency had determined the water bloom to be blue algae.

Experts found excessive phosphate and a slow current in the river, which they said accounted for the nutrition enrichment phenomenon.

Local governments are closely monitoring the water quality and the spread of the algae and have advised residents against eating fish or drinking water from the river.

Blue algae choked east China's Taihu Lake last summer, triggering a drinking water crisis for residents in Wuxi City in Jiangsu Province.

Blue algae, which exists widely in water bodies and is not harmful itself, grows easily in polluted water with high concentrations of nitrogen and phosphorous and a temperature of about 18 degrees Celsius.

An excess of blue-green algae removes oxygen from the water, killing fish and other aquatic life, which then decay and release toxins.

(Xinhua News Agency June 21, 2008)

Tools: Save | Print | E-mail | Most Read
Pet Name

China Archives
Related >>
- Algae outbreak at Chaohu Lake
- Water quality stable in once algae-choked lake
- Algae threatens 320,000 people in Anhui
- Blue-green algae outbreaks likely to occur again
- Pollutant algae returns to Lake Tai
Most Viewed >>
- China refills major lake affected by Olympic water use
- Flood gates open for sand washing
- 10 rare flowers and plants in the world
- Unidentified acaleph-like aquatic found in SE China
- Ecological Nirvana of Qingchuan
Air Quality 
Cities Major Pollutant Air Quality Level
Beijing particulate matter III1
Shanghai particulate matter I
Guangzhou particulate matter I
Chongqing particulate matter II
Xi'an particulate matter II
NGO Events Calendar Tips
- Hand in hand to protect endangered animals and plants
- Changchun, Mini-marathon Aimed at Protecting Siberian Tiger
- Water Walk by Nature University
- Green Earth Documentary Salon
- Prof. Maria E. Fernandez to Give a Lecture on Climate Change
Aid from the world
The Sichuan earthquake prompted a worldwide wave of sympathy. Governments, NGOs, firms and individuals rushed aid to the victims.
Panda Facts
A record 28 panda cubs born via artificial insemination have survived in 2006.
South China Karst
Rich and unique karst landforms located in south China display exceptional natural beauty.
Saving the Tibetan Antelopes
The rare animals survive in the harsh natural environment of the Qinghai-Tibet Plateau.
Laws & Regulations
- Forestry Law of the People's Republic of China
- Meteorology Law of the People's Republic of China
- Fire Control Law of the People's Republic of China
- Law on Protecting Against and Mitigating Earthquake Disasters
- Law of the People's Republic of China on Conserving Energy
State Environmental Protection Administration
Ministry of Water Resources
Ministry of Land and Resources
China Environmental Industry Network
Chengdu Giant Panda Research Base