男女羞羞视频在线观看,国产精品黄色免费,麻豆91在线视频,美女被羞羞免费软件下载,国产的一级片,亚洲熟色妇,天天操夜夜摸,一区二区三区在线电影
   

CHINA / National

Floodwater a friend, not foe
(Xinhua)
Updated: 2006-03-25 13:48

Floods have become friends rather than foes, since China is making terrible summer floodwaters useful in fighting drought. Many areas are saving floodwaters for the dry season.

Some water-deficient regions have begun diverting floodwater from major rivers for storage during flood season.

Then they use these valuable sources of water for irrigation in dry season to ensure stable water supply and crop yields.

Major rivers, often referred to as "mother rivers," serve as the principal source of irrigation in China. However, raging floods on these rivers in high-water seasons pose a great threat to people living on both banks.

According to the State Flood Prevention and Drought Relief Headquarters, floods killed 1,231 people, left 331 others missing and caused direct economic losses of 136 billion yuan (US$16.9 billion) in the first three quarters of 2005.

The traditional way to curb floods is to reinforce river embankments and open reservoir sluices to discharge floodwater. But, in dry season, people in river areas often face water shortage.

Baicheng City, which lies on Nenjiang River, a tributary of the Songhua River in northeast China, undertook an unprecedented experiment in 2003, encouraged by the government's call for scientific development.

"The city often suffers from severe drought as it uses less than 2 percent of Nenjiang River's average yearly water flux, or 21.6 billion cubic meters," said Xu Kai, an official of the water resources bureau.

After realizing the value of floodwater, the city began to channel floodwater into reservoirs and ponds for storage for use in dry seasons.

"During the past three years, we have utilized 3 million cubic meters of floodwaters, which have helped to improve 50 square kilometers of wetlands, and raised the underground water level by one meter," Xu said.

The city's five reservoirs and 18 ponds are now filled with floodwater.

To date, more and more people living adjacent to large rivers, such as the Yangtze River and Yellow River, have followed the example of Baicheng City.

The move is important, as nearly two thirds of 660 cities lack water supply. China's per capita share of water resources is only a quarter of the world's average.

 
 

主站蜘蛛池模板: 阿拉善右旗| 公主岭市| 武义县| 道孚县| 九江市| 余庆县| 涞水县| 林州市| 绍兴市| 龙岩市| 白水县| 出国| 惠来县| 麦盖提县| 牟定县| 耒阳市| 固镇县| 河北省| 阿克陶县| 广元市| 屏南县| 百色市| 清水县| 九江县| 保亭| 都匀市| 清徐县| 新郑市| 许昌市| 白玉县| 雷州市| 海盐县| 灯塔市| 大连市| 保山市| 富锦市| 高平市| 高州市| 扎鲁特旗| 阳西县| 张家川| 林口县| 盖州市| 泾川县| 哈巴河县| 元朗区| 油尖旺区| 吉首市| 微山县| 宿松县| 紫阳县| 镇原县| 武夷山市| 黄浦区| 滦南县| 齐河县| 华亭县| 阿图什市| 庆云县| 丰城市| 如东县| 岐山县| 邻水| 无极县| 延安市| 台南市| 高尔夫| 保靖县| 巢湖市| 彩票| 江西省| 平顺县| 阿克苏市| 屏南县| 德阳市| 芒康县| 翼城县| 娱乐| 盐津县| 金阳县| 桂东县| 高要市|