www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

   

Algae bloom watched

By Liang Qiwen (China Daily)
Updated: 2007-12-28 07:45

GUANGZHOU: Sightings of blue-green algae in reservoirs in Guangdong Province have put local authorities on high alert to ensure the scourge does not contaminate the water supply, as it did this summer in Taihu Lake in Jiangsu Province.

"Blue-green algae has been seen in more than 20 reservoirs in the province," Li Yue'an, vice-director of the Guangdong water resource department, said at a water resource conference in the city of Shenzhen.

The algae comprise microscopic organisms that are naturally present in lakes and streams. Scientists have said they grow easily in polluted waters and an excess of them can starve the water of oxygen, killing fish and other aquatic life.

Li said if there is an outbreak of the algae in Guangdong, the effect will be worse than it was in Taihu Lake because of the higher temperatures and stronger sunlight in the province.

He did not say which reservoirs had been hit by the algae bloom.

Officials from the Guangzhou water resource bureau said the algae had not yet been detected in the city, the provincial capital. They said Guangzhou's rivers flow very fast, which helps counteract the growth of the algae.

Some experts have said it is unlikely Guangdong will witness a large-scale outbreak of the algae.

Li Jianji, director of the Guangzhou Astronomy Society, said yesterday that the region's Pearl River experiences at least two tides every day, which maintain the steady flow of the river and its tributaries.

Blue-green algae can only become abundant in relatively still water, he said.

The tides also carry large numbers of freshwater and saltwater fish to the mouth of the Pearl River, which eat the algae, he said.

"The river will not see an outbreak of blue-green algae in the next 10 years," Li said.

Han Boping, a hydrobiology professor at the Guangzhou-based Jinan University, who has studied the blue-green algae in the province for many years, said that local people and the authorities must, however, be on the alert for the algae once spring approaches and brings with it warmer temperatures.

He said the government should take measures to control pollution in rivers, lakes and reservoirs before the weather gets warmer.

In May, a blue-green algae outbreak hit Taihu Lake, affecting the water supply to thousands of people in Wuxi.



Top China News  
Today's Top News  
Most Commented/Read Stories in 48 Hours
主站蜘蛛池模板: 欧美在线黄 | 波多野结衣一区在线观看 | 亚洲成a人片在线观 | 日韩美女免费线视频 | 孕妇孕妇aaaaa级毛片视频 | 免费观看欧美一级毛片 | 欧美做爰性欧美 | 成人精品综合免费视频 | 高清一区二区三区免费 | 玖草| 国产在线精品一区二区三区 | 美女扒开腿让男人桶尿口 | 成人综合国产乱在线 | 男人天堂网在线观看 | 99热成人精品热久久66 | 久久精品视频16 | 黄色一级毛片 | 中国的毛片 | 国产特黄特色的大片观看免费视频 | 欧美色性视频 | 日韩一及片 | 97在线视频观看 | 久久久久琪琪精品色 | 欧美jizzhd精品欧美高清 | 亚洲国产精品视频 | 国产一区二区三区高清视频 | 91pao强力打造免费高清 | 亚洲天堂视频网 | 三级视频在线播放线观看 | 欧美一区二区三区精品 | 久久久这里只有精品免费 | 欧美国产综合日韩一区二区 | 久久久久久久久免费影院 | 国产在线观看一区精品 | 日本久久免费 | 一区二区在线欧美日韩中文 | 欧美特黄视频在线观看 | 日韩欧美国产精品第一页不卡 | 亚洲国产成人综合精品2020 | 久久亚洲成人 | 国产成人在线网址 |