日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

Global EditionASIA 中文雙語Fran?ais
China
Home / China / Environment

Fish species on brink of extinction as water quality declines

By Li Yang | China Daily | Updated: 2018-11-25 10:00
Share
Share - WeChat
The Wuhan section of the Yangtze River. [Xinhua]

Textbooks used in middle schools often call the Yangtze River one of the Mother Rivers of China as it has 49 tributaries, each with a drainage area of more than 10,000 square kilometers, and hundreds of attached lakes.

It is home to 424 types of fish, of which 183 are endemic, and the categories of freshwater fish in the river comprise 33 percent of the national total.

But President Xi Jinping has said that the country's longest river is almost a "fish desert".

In an April meeting in Wuhan, Hubei province, that focused on the Yangtze River Economic Belt, the president said the bio-integrity index of the Yangtze has reached the "no fish" level. This means that the river's water ecology has fallen to its lowest biodiversity level.

Six months later, the State Council, China's Cabinet, urged local governments to strengthen protection of aquatic species and accelerate restoration of the Yangtze's ecological environment.

The 6,380-kilometer waterway is the third-longest river in the world - after the Nile (6,670 km) and the Amazon (6,400 km). The Yangtze has a total drainage area of 1.8 million sq km, home to a population of some 400 million people.

Over the past 20 years, the urban area located in the river's drainage basin has increased by about 40 percent.

But a high population and economic burden has taken its toll.

The Yangtze River Dolphin was declared functionally extinct in 2006, there were only about 1,000 finless porpoise remaining in the Yangtze by the middle of this year and the Chinese paddlefish has not appeared in the river since 2003.

The Chinese sturgeon, Chinese sucker fish, Chinese rock carp and Dabry's sturgeon - all endemic to the Yangtze - are also on the brink of extinction.

Cao Wenxuan, an academician specializing in aquatic organisms in the middle and upper reaches of the Yangtze with the Chinese Academy of Sciences, said the waters in these reaches of the river are home to 43.3 percent of 124 types of endemic fish, so they deserve special attention and protection.

1 2 3 4 5 Next   >>|
Top
BACK TO THE TOP
English
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: 成人在线播放 | 免费的污污网站 | 免费看的黄色 | 欧美一级美国一级 | 欧美日韩成人一区二区 | 国产福利视屏 | 亚洲精品婷婷无码成人A片在线 | 成人久久精品一区二区三区 | 四虎在线免费观看 | 羞羞的视频在线免费观看 | 无码AV免费一区二区三区A片 | 久久久成人精品 | 亚洲五月综合网色九月色 | 天天爽天天碰狠狠添 | 激情婷婷成人亚洲综合 | 国产三级在线观看视频 | 色综合网址 | 第一页在线视频 | 国产午夜精品视频免费不卡69堂 | 亚洲国产综合精品中文第一区 | 国产自产在线 | 色网站在线视频 | 亚洲欧美视频一区二区 | 国产不卡在线观看视频 | 亚洲天堂视频在线观看 | 色屁屁影院网站入口 | 亚洲91精品 | 26uuu中文字幕 | 俄罗斯论理片 | 国产三级在线精品男人的天堂 | 中文字幕亚洲欧美日韩在线不卡 | 91精品天美精东蜜桃传媒入口 | 日本成人一区二区三区 | 波多野结衣mxgs1124在线 | 激情六月综合 | 欧美黄视频 | 麻豆国产一区二区三区四区 | 国产一区二区三区久久久久久久久 | 一级一级一级一级毛片 | 国产一区中文字幕 | 婷婷综合缴情亚洲五月伊 |