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

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / China

Cities struggling to deal with storms

By Wang Qian | China Daily | Updated: 2013-03-29 07:09

Cities struggling to deal with storms

A tree felled by a storm lies on a street in Liuzhou in the Guangxi Zhuang autonomous region on Thursday. Many southern regions have been hit in the past few days by a growing number of storms, that have brought heavy rain, strong winds, lightning, thunder, sleet, hail, and - in some cases - tornados. Li Shuhou / for China Daily

 

Heavy rain, sleet, hail and tornados put drainage systems under pressure

The rising number of severe storms in China has revealed problems that are the result of rapid urbanization, experts say.

Many regions are coping with a growing number of storms that bring heavy rain, strong wind, lightning, thunder, sleet, hail, and in some cases, tornados.

These frequent and turbulent storms "are putting pressure on urban drainage systems and local authorities' emergency response systems," said Xie Yingxia, vice-president of the Institute of Urban Water and Engineering under the China Academy of Urban Planning and Design.

She said urban drainage networks have failed to keep pace with construction above ground, leading to more floods and traffic jams in cities hit by severe weather.

"In some cities, water can't flow into rivers or lakes because authorities have blocked the waterways, increasing the risk of floods," Xie said.

Li Weibiao, a professor of atmospheric sciences at Sun Yat-sen University, said studies show the Pearl River Delta is getting more heavy rainfall and afternoon precipitation.

Li said this shows a need for detailed impact studies to evaluate the associated risks and costs, and to develop strategies to cope with such events.

Since the beginning of March, South China has had five bouts of severe weather, claiming more than 30 lives, said Zheng Yongguang, a researcher at the National Climate Center's forecast office.

"Generally, we can forecast regional convective storms about 20 to 30 minutes before they happen," he said.

But Yuan Hongyong, deputy director of Tsinghua University's Center for Public Safety Research, said that is not enough time for China's emergency response system to inform people who may be affected.

"It takes at least 40 minutes for the system to work, from receiving a weather alert from the China Meteorological Administration to relaying that to the public," Yuan said, adding that a 20-minute forecast requires the system to be more efficient.

He said China's emergency response system can cover all cities through various ways, such as text messages, television, the Internet and broadcast media, but it still takes time to cover counties and villages.

The strongest tornado to hit Dongguan, Guangdong province, on March 20, showed how weak the alert system is. The tornado killed nine people and injured 272 others, causing a direct economic loss of more than 1.3 billion yuan ($209 million).

Fang Weidong, deputy director of the Dongguan emergency response office, conceded on March 22 that the system needs improvement.

The city's meteorological bureau issued alerts only for strong gales and thunderstorms before the disaster. It made no mention of a tornado.

According to the authority, the wind speed of the tornado was up to 176.8 km per hour .

Ma Xuekuan, chief forecaster at the National Meteorological Center, said the heavy rainfall will continue in South China into next week, and people should be aware of possible disasters triggered by continuous rain.

wangqian@chinadaily.com.cn

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
主站蜘蛛池模板: 国产成人精品久久一区二区三区 | 国产激情视频网站 | 日韩在线视频中文字幕 | 国产欧美综合一区二区 | 国产精品久久久久久久久99热 | 视频一区二区在线 | 久久午夜视频 | 99久久精品男女性高爱 | 美女视频免费永久观看的 | 大伊香蕉精品视频在线天堂 | 亚洲制服欧美自拍另类 | 中文字幕色站 | 亚洲 欧美 国产 中文 | 日本精品一区二区三区在线视频一 | 欧美日韩精品一区二区三区视频在线 | 午夜免费69性视频爽爽爽 | 欧美一级看片a免费观看 | 久久久综合结合狠狠狠97色 | 国产一级毛片午夜 | 1024色淫免费视频 | 最新日韩欧美不卡一二三区 | 1769视频在线观看国产 | 波多野结衣在线不卡 | 国产精品单位女同事在线 | 99久免费精品视频在线观看2 | 美女黄影院 | 国产精品日本欧美一区二区 | 国产成人一区二区三中文 | 和老外3p爽粗大免费视频 | 国产草草影院ccyycom软件 | 男人又粗又硬桶女人免费 | 香港a毛片免费全部播放 | 亚洲成人自拍网 | 91日本在线视频 | 97久久天天综合色天天综合色 | 日本阿v视频在线观看高清 日本波多野结衣视频 | 亚洲欧洲日韩在线 | 99草精品视频 | 国产精品成人免费综合 | 欧美成人午夜在线全部免费 | 久久久国产成人精品 |