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

   
  home feedback about us  
   
CHINAGATE.OPINION.Social security    
Agriculture  
Education&HR  
Energy  
Environment  
Finance  
Legislation  
Macro economy  
Population  
Private economy  
SOEs  
Sci-Tech  
Social security  
Telecom  
Trade  
Transportation  
Rural development  
Urban development  
     
     
 
 
Human role in spread of flu must be faced


2006-01-26
China Daily

Evidence is accumulating that migratory birds may have played a role in getting domestic fowl infected with bird flu.

Nine outbreaks of avian influenza in Northwest China's Xinjiang Uygur Autonomous Region occurred near natural wetlands. It is no coincidence as wetlands are seasonal homes for migratory birds.

In the past 50 years, wetlands in the autonomous region have decreased from 2.8 million hectares to 1.4 million. The same reduction can be seen in other parts of the country.

Human activities related to farms and fisheries have been encroaching on the territories of wild birds.

Even before the outbreaks of bird flu, experts warned the diminishing wetlands would bring about disasters for humans.

We have been caught in a trap we set ourselves.

Wetlands are a buffer zone between domestic fowl and migratory birds, according to experts. The disappearance of this natural separation means the loss of the protection belt guaranteeing harmonious co-existence for humans and wild birds.

We should remember the lessons of SARS. We killed many civet cats, which were found to be carriers of the virus causing the epidemic.

Though this particular animal carried the virus, it was the killing and eating of the cats that should be blamed.

Some migratory birds carry the H5N1 virus, which does not cause problems in itself. But if the virus is caught by chickens and ducks, the risk of human infection is greatly increased.

Statistics from the State Administration of Forestry reveal two-thirds of the nation's lakes and wetlands are polluted to differing degrees  with 20 per cent of lake water so contaminated it is no longer useable. Perhaps this degraded environment plays a role.

Ornithologist Gu Jinghe, from Xinjiang, believes the H5N1 virus has existed in the migratory population for a long time.

Much needs to be done to find out exactly how migratory birds spread the virus among domestic fowl, how humans are infected and how the virus mutates.

Nevertheless, the lessons from SARS and the outbreaks of bird flu near wetlands in Xinjiang should be enough to convince us we must take a retrospectively critical view of what we humans have done to the environment.

In recent years, efforts to preserve wetlands have been made, but they are far from enough. Statistics indicate only 40 per cent of the country's total wetland area is under protection.

Even without bird flu, human activities could not be justified if they damage wetlands, which perform a function as important to the environment as a lung is to a human.

 
 
     
  print  
     
  go to forum  
     
     
 
home feedback about us  
  Produced by m.orobotics.cn. All Rights Reserved
E-mail: webmaster@chinagate.com.cn
主站蜘蛛池模板: www日本高清 | 亚洲国产欧美在线人成精品一区二区 | 人禽毛片| 久久五月女厕所一区二区 | 成人国产精品免费网站 | 大伊香蕉精品视频在线 | 免费永久观看美女视频网站网址 | 4438全国最大成人网视频 | 亚洲观看视频 | 欧美一级毛片图 | 久久亚洲精品视频 | 欧美激情视频一区二区免费 | 久久手机在线视频 | 亚洲免费精品 | 看成年女人免费午夜视频 | 国产97在线视频 | 欧美自拍网 | 一级做a爰片性色毛片视频图片 | 国产盗摄视频 | 国产a∨一区二区三区香蕉小说 | 亚洲男人的天堂在线 | 亚洲欧美韩日 | 天天se天天cao综合网蜜芽 | 久久久久国产午夜 | 97免费在线 | 欧美嫩交 | 欧美日韩亚洲在线观看 | 一级毛片 在线播放 | 九九看片| 怡红院免费全部视频在线 | 伊人色综合久久天天人手人停 | 日本精品一区二区三区在线视频一 | 亚洲一区二区影视 | 成人三级视频 | 美女视频黄a全部免费专区一 | 美女又爽又黄视频 | 国产欧美自拍视频 | 成人国产综合 | 欧美日韩精品一区二区 | 国产免费一区二区三区在线 | 色女生影院 |