Home>News Center>China
       
 

Beijing has hotter summers due to urban "heat island" effect
(Xinhua)
Updated: 2004-06-25 09:30

The urban "heat island" effect is bringing Beijingers more scorching summer days, as the "heat island" now covers about 20 percent of the 1,040-sq-km downtown area of China's capital, according to the latest scientific research findings.

Studies using remote sensing technology discovered that the urban "heat island" effect was a major factor behind the air temperature rise in Beijing, said Li Yanming, a senior engineer with the Beijing Research Institute of Garden, at an internationalurban "heat island" effect symposium held Wednesday in the city.

Beijing's downtown area under the unified design by the municipal government had its land area used for construction purposes almost double the level 15 years ago, whereas the area ofnatural plants, including farm land, reduced from 645 sq. km to 279 sq. km, according to Li Yanming. This made the capital look like a huge "heat island", Li added.

The term "heat island" comes from the fact that in an air temperature distribution graph, the high temperature part has a shape of an "island".

Originating in the early 19th century, "heat island" studies focus on the manmade effect on temperature gap between a city's downtown and suburban areas and the ensuing impact on the urban ecological environment.

A research team headed by Li Yanming found that Beijing's "heatisland" featured low green patch coverage but high concentration of buildings. It is also densely populated, with a great deal of artificial heating resources.

To allay the urban "heat island" effect, it is imperative to increase the areas of water surface and green patches, Li said. Research shows that when a city's green coverage surpasses 40 percent, the "heat island" effect will be lowered notably.

In this regard, Beijing has cultivated 81 vast green patches since 1999. Another seven patches of large wedge-shaped green lotswill be arranged with a combined area of 175 square kilometers between the downtown and suburban areas of Beijing to raise the city's green coverage to 43 percent by the time the city hosts theOlympic Games in 2008.



 
  Today's Top News     Top China News
 

Minister: China deserves market economy status

 

   
 

Grain yield to end years of decline

 

   
 

Iraq attacks kill over 100, wound 320

 

   
 

Investigation: Boat tragedy 'avoidable'

 

   
 

Probe-2 satellite headed for July orbit

 

   
 

New rules unveiled for clean projects

 

   
  Probe-2 satellite headed for July orbit
   
  Green GDP fine tunes growth to ecology
   
  Grain yield to end years of decline
   
  542 Japanese chemical bombs retrieved
   
  New system to make professors do better
   
  Investigation: Boat tragedy 'avoidable'
   
 
  Go to Another Section  
 
 
  Story Tools  
   
  Related Stories  
   
Escaping summer heat
   
Summer heat wave rolls on
  News Talk  
  When will china have direct elections?  
Advertisement
         
主站蜘蛛池模板: 久久久噜噜噜久久中文字幕色伊伊| 免费观看性生活大片| 4480yy私人影院论| 女人让男生桶的视频免费| 丰满少妇高潮惨叫久久久| 日韩欧美久久一区二区| 亚洲午夜久久久久久久久电影网| 狠狠综合久久久久综合小说网| 又粗又长又黄又爽视频| 青草影院内射中出高潮| 旧里番yy6080| 亚洲欧美一区二区三区| 狠狠躁天天躁中文字幕无码| 动漫人物桶动漫人物免费观看 | 亚洲人成在线中文字幕| 波多结衣一区二区三区| 伊人久久精品亚洲午夜| 精品久久久无码人妻中文字幕| 四虎成人精品在永久免费| 视频一区视频二区制服丝袜| 国产孕妇做受视频在线观看| 亚洲六月丁香婷婷综合| 成人免费看www网址入口| 久久免费视频3| 日韩成人精品日本亚洲 | 久在线精品视频| 欧美一级片观看| 再深点灬再大点灬舒服| 老子影院午夜伦不卡亚洲| 国产精品视频免费一区二区 | 国产精品久久99| 2021国产麻豆剧果冻传媒影视| 国产高清视频一区三区| 99久久免费只有精品国产| 在线观看污污网站| CAOPORN视频在线观看| 天堂在线www| a级亚洲片精品久久久久久久| 香港一级毛片免费看| 欧美亚洲欧美日韩中文二区| 四虎成人永久影院|