Blue-green algae discovered in Chaohu Lake

时间：2007-06-08 05:59:45

（单词翻译:单击）

June 8 - More blue-green algae1 has been found in east China, this time in China's fifth largest freshwater lake - Chaohu Lake - in the eastern province of Anhui.

 

Local environmental protection officials are playing down the discovery, insisting the algae is unlikely to develop into a bloom similar to that found in Taihu Lake last week, in neighboring Jiangsu Province.

 

"The algae is only in the western part of the lake and will not pollute the whole lake which measures about 750 square meters," said Zhang Zhiyuan, chief engineer of the provincial2 environmental protection bureau, without revealing the surface area of the lake affected3 by the algae.

 

But he admitted, "Theoretically speaking, the algae could spread unchecked. It is also impossible to eradicate4 it in the short term," Zhang admitted.

 

"But its growth is greatly influenced by weather. Thanks to the recent frequent rainfall that has diluted5 the lake, the algae has been notably6 curbed," he said.

 

However, environmental officials have been concerned enough to hold talks with the provincial water resources bureau about diverting water to the lake.

 

"A mere7 700 million cubic meters of water is enough to prevent the algae from blooming," Zhang said.

 

The lake has suffered from high levels of nitrogen and phosphorus for years. The local environment agency is now closely monitoring water quality and says it will report anything unusual to the government.

 

"The eastern part of the lake, which is the source of drinking water for the neighboring Chaohu city, meets the country's drinking water standards," Zhang said. The city has a population of 320,000.

 

The Chaohu Lake experienced a blue-green algae bloom in July 2004 but it soon subsided8 after timely winds and rainfall.

 

Blue-green algae is a simple aquatic9 plant life that occurs naturally in rivers, lakes, damp soil, tree trunks, hot springs and snow.

 

"Bloom" is the common term used to describe an increase in the number of algal cells to a point where they can discolor the water, form scum, produce unpleasant tastes and odors, affect shellfish and fish populations or otherwise create a nuisance and seriously reduce the water quality.

 
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1 algae tK6yW     
n.水藻，海藻
参考例句：
  • Most algae live in water.多数藻类生长在水中。
  • Algae grow and spread quickly in the lake.湖中水藻滋蔓。
2 provincial Nt8ye     
adj.省的，地方的；n．外省人，乡下人
参考例句：
  • City dwellers think country folk have provincial attitudes.城里人以为乡下人思想迂腐。
  • Two leading cadres came down from the provincial capital yesterday.昨天从省里下来了两位领导干部。
3 affected TzUzg0     
adj.不自然的，假装的
参考例句：
  • She showed an affected interest in our subject.她假装对我们的课题感到兴趣。
  • His manners are affected.他的态度不自然。
4 eradicate Ui1zn     
v.根除，消灭，杜绝
参考例句：
  • These insects are very difficult to eradicate.这些昆虫很难根除。
  • They are already battling to eradicate illnesses such as malaria and tetanus.他们已经在努力消灭疟疾、破伤风等疾病。
5 diluted 016e8d268a5a89762de116a404413fef     
无力的，冲淡的
参考例句：
  • The paint can be diluted with water to make a lighter shade. 这颜料可用水稀释以使色度淡一些。
  • This pesticide is diluted with water and applied directly to the fields. 这种杀虫剂用水稀释后直接施用在田里。
6 notably 1HEx9     
adv.值得注意地，显著地，尤其地，特别地
参考例句：
  • Many students were absent,notably the monitor.许多学生缺席，特别是连班长也没来。
  • A notably short,silver-haired man,he plays basketball with his staff several times a week.他个子明显较为矮小，一头银发，每周都会和他的员工一起打几次篮球。
7 mere rC1xE     
adj.纯粹的；仅仅，只不过
参考例句：
  • That is a mere repetition of what you said before.那不过是重复了你以前讲的话。
  • It's a mere waste of time waiting any longer.再等下去纯粹是浪费时间。
8 subsided 1bda21cef31764468020a8c83598cc0d     
v.（土地）下陷（因在地下采矿）( subside的过去式和过去分词 )；减弱；下降至较低或正常水平；一下子坐在椅子等上
参考例句：
  • After the heavy rains part of the road subsided. 大雨过后，部分公路塌陷了。 来自《简明英汉词典》
  • By evening the storm had subsided and all was quiet again. 傍晚， 暴风雨已经过去，四周开始沉寂下来。 来自《现代汉英综合大词典》
9 aquatic mvXzk     
adj.水生的，水栖的
参考例句：
  • Aquatic sports include swimming and rowing.水上运动包括游泳和划船。
  • We visited an aquatic city in Italy.我们在意大利访问过一个水上城市。

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