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
China
Home / China / Environment

Expedition to study finless porpoises to be launched in Yangtze River

chinadaily.com.cn | Updated: 2017-10-24 15:32

Expedition to study finless porpoises to be launched in Yangtze River

File photo: a wild finless porpoise.[Photo provided by the Institute of Hydrobiology under the Chinese Academy of Sciences]


A scientific expedition to the Yangtze River to study wild finless porpoises and their habitats will be launched on Nov 10.

The 40-day expedition, which will be organized by the Ministry of Agriculture, will be conducted in the main stream of the middle and lower reaches of the Yangtze spanning from Yichang in Hubei province to Shanghai, as well as the river's large tributaries and the lakes of Dongting and Boyang.

Two scientific research vessels will set off from Wuhan, the capital city of Hubei province, on Nov 10 and the journey will cover approximately 3,400 kilometers.

Hao Yujiang, an associate research fellow at the Institute of Hydrobiology under the Chinese Academy of Sciences, said that visual observations and acoustic investigations will be conducted. Water samples, substrate sludge and sounds will be collected every 50 km along the river.

Unmanned aerial vehicles equipped with surveillance cameras will also be deployed to observe the habitats of finless porpoises, the most basal living member of the porpoise family.

A separate expedition in 2012 found that the population of the finless porpoises living in Yangtze had shrank to about 1,045, or 13.7 percent less than six years before.

Scientists said that the threats faced by finless porpoises include insufficient food, the use of illegal fishing tools, destruction of their habitats, water pollution and the construction of water conservancy projects that interrupt their migration channels.

During the 8th World Freshwater Dolphin Day on Oct 24, representatives from the World Wildlife Fund, China Wildlife Conservation Association and the Chinese Academy of Sciences attended a conference at the Shanghai Natural History Museum where they shared their experiences on the protection of these finless porpoises.

He Qi in Shanghai contributed to this story.

Previous 1 2 3 Next

Editor's picks
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: 久久午夜网 | 国产午夜伦理 | 日韩一区二区在线播放 | 欧美成人a视频 | 精品一区二区在线观看 | 免费成人深夜天涯网站 | 中文字幕在线视频免费观看 | 欧美天天射 | 成人a视频在线观看 | 中文字幕第35页 | 亚洲国产精 | 麻豆精品国产传媒 | 精品免费一区二区 | 精品手机在线视频 | 亚洲成年人网 | 久操av在线 | 欧美日韩www | av片国产| 黄色羞羞网站 | 日本激情影院 | 殴美一级黄色片 | 日韩精品视频网 | 五月天综合激情 | 午夜国产福利视频 | 日韩激情一区二区 | 中文字幕第8页 | 黄视频在线播放 | 亚洲无线视频 | 亚洲在线视频观看 | 99热热热热| 国产精品综合久久 | 精品在线观看视频 | 丁香婷婷久久 | 一区二区三区在线视频播放 | 曰本一级片 | 亚洲福利影院 | 成年人国产视频 | 亚洲精品黄色 | 久久影院国产 | 天天综合网天天综合 | 少妇一区二区视频 |