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

Make me your Homepage
left corner left corner
China Daily Website

Fish ecosystem on Yangtze 'on verge of collapse'

Updated: 2013-08-16 01:42
By Yang Yao ( China Daily)

Fish ecosystem on Yangtze 'on verge of collapse'

The environmental impact assessment for the Shuangjiangkou hydropower project, for instance, was passed two years after construction started in 2011.

Chen Jiakuan, a professor at Fudan University in Shanghai who participated in the research expedition, said that 450 million metric tons of sand flowed downstream in the Yangtze in the 1950s, compared to 150 million tons at present.

"The sand is silting up at reservoirs, leading to the degradation of water quality. It also changed the environment for fish," Chen said.

Hydroelectric power plants also change water temperatures and a river's flow, which damages native plants and animals in the river and on land, he said.

As for overfishing, experts said 100,000 tons of fish caught in the Yangtze is an amount beyond what its ecosystem could take.

An annual three-month moratorium during the fish spawning period on the Yangtze River is far from enough for fish reproduction, Zhao said.

"The best way is a total ban on fishing," he said.

But he said the policy is hard to implement as it involves a lot of issues such as compensating those who live on fishing.

He suggests establishing a department coordinating different interest groups to solve the problem.

"The department should be responsible for drafting compensation plans to ensure the fishing ban is effective."

As the Yangtze River basin covers 19 provinces and cities, accounting for 18.8 percent of the land area in China, saving the river and its fish resources is not an easy task.

New legislation is needed to raise public awareness, the report said.

Ren Wenwei, head of the Shanghai conservation program of WWF, said the current regulations are not enough.

"The Yangtze River Fishery Resources Committee is a vice-ministry level department, which has limited power to coordinate different interest groups," he said.

He and other scientists propose drafting a Yangtze River Basin Management Act and establishing a coordinating department directly under the State Council.

Previous Page 1 2 Next Page

8.03K
 
...
Hot Topics
A sailor from British Royal Navy destroyer HMS Daring tries to catch a mooring line to dock in the north side of the bund at Huangpu River in Shanghai December 10, 2013.
...
...
主站蜘蛛池模板: 亚洲产国偷v产偷v自拍涩爱 | 欧美一区二区三区在线观看免费 | mm在线精品视频 | 亚洲精品国产专区91在线 | 伊人成人在线 | 免费一级做a爰片性色毛片 免费一极毛片 | 欧美精品videos | 久久亚洲精品中文字幕二区 | 国产亚洲精品aaa大片 | 91精品国产免费久久久久久青草 | 欧美最黄视频 | 99久久国产综合精品2020 | 国产精品久久久久久久久久免费 | 亚洲国产一区二区三区综合片 | 高清在线观看自拍视频 | 欧美日本国产 | 久久免费大片 | 亚洲欧美综合国产不卡 | 国产com| 午夜性爽视频男人的天堂在线 | 激情性爽三级成人 | 亚洲香蕉影院 | 欧美xo影院 | 亚洲男女视频 | 丝袜黄色片 | 久草视频在线资源站 | 黑色丝袜美美女被躁视频 | 色欲麻豆国产福利精品 | 玖玖精品视频在线 | 日本一区二区三区不卡视频中文字幕 | 男人天堂网在线观看 | 日本一级大毛片a一 | 欧美精品videosbestsex另类 | 波多久久夜色精品国产 | 欧美大片国产在线永久播放 | 亚洲综合色一区二区三区小说 | 国产播放 | 日本成人午夜 | 中文精品99久久国产 | 精品一区二区在线欧美日韩 | 日本二级毛片免费 |