日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

USEUROPEAFRICAASIA 中文雙語Fran?ais
Opinion
Home / Opinion / Op-Ed Contributors

Will the porpoise go the dolphin way?

By Peter Beaudoin | China Daily | Updated: 2013-04-19 07:13

A series of recent water quality and food safety issues have raised public concern. The World Wide Fund for Nature has delved into the vulnerability of the long-term health of China's rivers and wide-ranging variety of species, which depend on clean and abundant freshwater sources for their survival.

The Ministry of Agriculture recently announced that only 1,000 finless porpoises were left in the Yangtze River, its tributaries and adjoining lakes. The endangered species has declined at a shocking rate of 13.7 percent a year in recent times. At this pace, the best scientific estimates say the Yangtze finless porpoise could become extinct in 10 to 15 years.

The porpoise has thrived in the main stream of the Yangtze River for about 300,000 years and is the only surviving freshwater subspecies of the narrow-ridged finless porpoise. But excessive exploitation of resources in the Yangtze River basin has pushed the mammal to the brink of extinction.

The Yangtze River basin is home to 400 million people, and the river is the engine that drives roughly 40 percent of the Chinese economy. In economics terms, the Yangtze River basin is thriving. But at what cost? Ecologically, the Yangtze is very unhealthy - if it was a human patient it would have been placed in the intensive care unit.

Close to 56 percent of China's freshwater fish catch comes from the Yangtze, but recent evidence suggests the river's declining health is having a serious impact on four species of carp that often grace the dinner tables of the nation. Alarmingly, fry from these "big four" have declined by up to 95 percent in recent years because of river-lake disconnection, pollution, illegal fishing and water infrastructure development. This means less food for not only fish and birds, but also human beings.

That the main breeding areas of the finless porpoise - Poyang and Dongting lakes - are also the main dredging grounds for sand, needed to fuel China's construction boom, has complicated matters further.

But there is a glimmer of hope. After dozens of porpoises were found dead in the Yangtze (including about 12 in Donting Lake) in the spring of 2012, the Hunan provincial government passed a regulation to protect the species. The regulation, for the first time, links assessment of local officials' annual performance with the safety of species.

The challenge is daunting because the Dongting Lake has only a small number of the porpoises.Scientists estimate that if the species' number drops below 200 in the Yangtze, it will be unable to survive.

Previous Page 1 2 Next Page

Most Viewed in 24 Hours
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: 欧美一区二区三区视频在线 | 国产精品1000部啪视频 | 午夜激情小视频 | 欧美一级黄 | 天天爽夜夜爽夜夜爽精品视频 | 欧美区亚洲区 | 成人av网站在线观看 | 午夜激情网址 | 国产精品日韩在线 | 亚洲综合一二三 | 国产精品一区二区三区不卡 | 在线播放网址 | 日韩第二页 | 久久精品香蕉 | 欧美一区二区三区免费看 | 亚洲欧洲在线播放 | 婷婷综合网站 | 国产小视频在线观看 | 亚洲男人天堂视频 | a√任天堂中文 | 国产激情在线播放 | 美女国产视频 | 免费av网站在线看 | 亚洲激情av | 日本不卡中文字幕 | 全部孕妇毛片丰满孕妇孕交 | 中文字幕五月 | 黄色一级大片免费看 | 五月婷婷开心网 | 日韩资源网 | 成人免费精品动漫网站 | 伊人久久久 | 国产专区视频 | 亚洲国产精品免费在线观看 | 九一毛片 | 日韩视频在线观看免费 | 九九免费| 91精品久| 麻豆欧美| 久久这里只有精品国产 | 国产成人精品一区二区三区视频 |