国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

Global EditionASIA 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
Share
Share - WeChat

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.

1 2 3 Next   >>|
Top
BACK TO THE TOP
English
Copyright 1994 - . 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
 
宜城市| 镇赉县| 仲巴县| 吉隆县| 资溪县| 酉阳| 西峡县| 泰州市| 商南县| 上犹县| 子洲县| 安庆市| 都匀市| 财经| 台山市| 合阳县| 长葛市| 贵州省| 宝山区| 景德镇市| 海晏县| 永修县| 蒙山县| 武山县| 霸州市| 延寿县| 信宜市| 仁寿县| 雷山县| 宣威市| 汉阴县| 庆城县| 曲麻莱县| 军事| 兴隆县| 司法| 灵丘县| 武邑县| 乡宁县| 鸡泽县| 墨江|