国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

The Huaihe River is one of China's most turbulent rivers and the key to flood control is the scientific use of flood diversion areas, said a senior Chinese flood control expert.

Luo Zewang, deputy general engineer with the Huaihe River Water Resources Committee under the Ministry of Water Resources, said the river is subject to big fluctuations in rainfall between different years, causing frequent floods, waterlogging or droughts.

Luo said diverting floodwater in the middle reaches is crucial to controlling the floods.

Hongze Lake, the largest lake in the lower reaches of the river, has been elevated due to silting over the years, he said, which makes it difficult for floodwater to quickly flow downstream and empty into the sea.

The key to solving this problem is to use the flood diversion areas rationally, which currently total 22 along the river, Luo said.

He explained that diverting floodwater to Qiujiahu Lake, Chengdonghu Lake and Jingshanhu Lake from July 7 to 11 had successfully lowered the flood level on the river's trunk stream.

Luo noted that some 1.5 million people lived in these diversion areas before this year's flood.

He said the flood-control standards of the embankments of the river are relatively low, which puts great pressure on efforts to protect the embankments when floods occur.

Under the current circumstances, timely and accurate forecasting of rainfall and floods are very important to go along with scientific use of the flood diversion areas, said Luo.

To improve flood control work on the Huaihe River, China is building a major flood-control project in Linhuaigang in the river 's middle reaches. It is expected to enable the river to withstand the massive flooding that occurs every hundred years.

Involving a total investment of 2.27 billion yuan (about 273, 494 million US dollars), the project started at the end of 2001 and is expected to finish by 2006.

Close

Today's Top News		Top National News
+Emergency aid flooding into disaster areas ( 2003-07-14) +Liaison Office: No contact made with HK 'democrats' ( 2003-07-14) +China raps Japanese politician for whitewashing history ( 2003-07-14) +Editorial: Is war on Iran imminent? ( 2003-07-14) +Beijing marks Olympic anniversary after SARS ( 2003-07-14)		+Five killed, scores missing in Sichuan, Hubei mudslides ( 2003-07-14) +Capital aims for Olympic success ( 2003-07-14) +Guangdong unearthes 5,000-year-old resident ( 2003-07-14) +Xi'an savours ancient alcohol ( 2003-07-14) +30m viewers to tune into digital TV across China ( 2003-07-14)