久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

US EUROPE AFRICA ASIA 中文
Business / Green China

Fish ecosystem on Yangtze 'on verge of collapse'

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

Fish ecosystem on Yangtze 'on verge of collapse'

Landscape changes since 2005 along the banks of the Chishui River, a tributary of the Yangtze River, suggest the grave effects of human activity on the ecosystem of China’s longest river. [PHOTO BY WANG LEI / FOR CHINA DAILY]

Human activity along the upper reaches of the Yangtze River - such as building hydropower stations and excessive fishing - has pushed its aquatic ecosystem to the verge of collapse, a report released on Thursday warns.

Researchers suggested starting a fishing ban along the entire river and enacting a national law to protect the "mother river" of China, as its fishery resources are experiencing a severe recession.

The number of fish in four major species has shrunk from more than 30 billion in the 1950s to less than 100 million, and the number of breeds has been reduced from 143 to 17, according to the report released by the Yangtze River Fishery Resources Committee under the Ministry of Agriculture and the World Wide Fund for Nature.

The report is based on a 12-day scientific expedition in five provincial-level regions in June, in which 32 researchers from government agencies and NGOs participated.

It was the first expedition of its kind to study the upper reaches of the Yangtze River regarding wetlands, aquatic diversity and water environment, according to the WWF.

Besides the sharp decrease in the number of fish, some species, such as the finless porpoise, have already become extinct, said Zhao Yimin, head of the Yangtze River Fishery Resources Committee.

The plight along the river is not catching much public attention "as people can buy fresh fish from a wet market every day. They don't realize how serious the situation is", Zhao said.

"The source species are reducing, leading to unsustainable development of aquaculture and an increasingly fragile ecosystem."

Zhao said China's fishery resources will be drained soon if no immediate action is taken.

The report cited over-exploitation of hydropower and lax law enforcement as major reasons behind the dire situation.

On the Jinsha River, 25 hydropower plants are being, or will be built 100 km apart along the 2,308 km tributary of the Yangtze, according to the country's energy development plan.

Once completed, the plants will have power-generating capacity equivalent to four Three Gorges Dam projects.

"It will cut the river into sections, and completely change the aquatic environment, bringing a devastating impact to species and water quality," Zhao said.

According to environmental laws, a power plant has to pass an environmental impact assessment before construction starts. However, a majority of the projects go ahead without any assessment, Zhao said.

Previous Page 1 2 Next Page

Hot Topics

Editor's Picks
...
久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

    日本va欧美va精品| 成人激情免费网站| 欧美成人aa大片| 国产露脸91国语对白| 日本一区二区三区免费乱视频 | 激情综合色丁香一区二区| 久久久久99精品一区| 成人国产精品免费观看视频| 亚洲免费成人av| 欧美情侣在线播放| 韩国女主播一区| 中文字幕字幕中文在线中不卡视频| 欧美在线不卡视频| 老色鬼精品视频在线观看播放| 久久久不卡网国产精品一区| 99re6这里只有精品视频在线观看 99re8在线精品视频免费播放 | 欧美成人乱码一区二区三区| 成人一二三区视频| 亚洲国产日韩一区二区| 欧美成人精品二区三区99精品| 成人免费毛片高清视频| 亚洲一区二区五区| 欧美变态tickle挠乳网站| www.久久精品| 亚洲mv在线观看| 2020国产精品| 欧美最猛性xxxxx直播| 黄色小说综合网站| 一区二区三区中文字幕精品精品 | 久久久综合视频| 91福利视频在线| 国内精品久久久久影院色| 亚洲精品欧美激情| 欧美电影免费观看高清完整版| 99视频在线精品| 日韩av中文字幕一区二区| 国产网站一区二区三区| 欧美日韩国产一级片| 成人综合在线网站| 日韩一区精品字幕| 椎名由奈av一区二区三区| 精品久久久久久久人人人人传媒| 91福利在线导航| 久久草av在线| 亚洲精品亚洲人成人网| 久久这里只精品最新地址| 91极品美女在线| 国产精品996| 五月激情六月综合| 中文字幕综合网| 久久久久久久一区| 欧美视频一区在线| 成人一区二区三区在线观看| 日本中文一区二区三区| 亚洲视频一二三| 久久久久久综合| 91精品综合久久久久久| 成人福利视频在线| 国产一二三精品| 日韩av一区二| 夜夜亚洲天天久久| 最新国产の精品合集bt伙计| 久久久久久免费网| 日韩欧美国产综合一区| 欧美欧美欧美欧美首页| 日本精品一区二区三区高清 | 日韩一级完整毛片| 欧美性大战久久久久久久蜜臀| 国产精品亚洲视频| 美美哒免费高清在线观看视频一区二区 | 精品免费视频一区二区| 欧美日韩在线三区| 99综合电影在线视频| 亚洲视频一区二区在线| 国产精品久久午夜夜伦鲁鲁| 久久综合五月天婷婷伊人| 91麻豆精品国产91久久久久久久久| 一本大道久久a久久精二百| 懂色一区二区三区免费观看| 国产精选一区二区三区| 精品一二线国产| 蜜桃免费网站一区二区三区| 婷婷久久综合九色国产成人| 亚洲午夜在线观看视频在线| 一区二区三区视频在线看| 亚洲蜜臀av乱码久久精品蜜桃| 中文字幕在线不卡视频| 中文字幕日本不卡| 精品久久久久一区二区国产| 亚洲精品国产精品乱码不99| 国产亚洲精品久| 久久久精品免费网站| 久久久777精品电影网影网| 337p粉嫩大胆噜噜噜噜噜91av| 欧美成人三级在线| 精品国产乱码久久久久久夜甘婷婷| 日韩一级高清毛片| 精品少妇一区二区三区在线播放| 日韩欧美亚洲国产精品字幕久久久| 91精品黄色片免费大全| 7777女厕盗摄久久久| 欧美一区二区三区视频| 欧美一级久久久| 日韩精品一区二区三区视频在线观看| 日韩一级免费观看| 欧美精品一区二区在线播放| 久久色成人在线| 国产日韩欧美在线一区| 久久五月婷婷丁香社区| 中文字幕av免费专区久久| 国产精品网友自拍| 亚洲人成人一区二区在线观看| 一区二区三区蜜桃网| 午夜电影一区二区| 久久99精品国产.久久久久久| 国产综合久久久久久久久久久久| 国产成人av一区二区三区在线| 成人黄色av网站在线| 色综合天天综合在线视频| 欧美日韩中文国产| 日韩一级片网址| 久久久精品天堂| 亚洲人成精品久久久久久 | 亚洲黄网站在线观看| 天天影视网天天综合色在线播放| 美女脱光内衣内裤视频久久网站 | 69久久夜色精品国产69蝌蚪网| 欧美一区二区三区免费大片| 精品国产免费人成电影在线观看四季 | 国内精品伊人久久久久av影院 | 日本一区二区三区国色天香 | 91免费看`日韩一区二区| 欧美色区777第一页| 日韩精品自拍偷拍| 国产欧美视频在线观看| 亚洲欧美一区二区三区孕妇| 亚洲国产精品影院| 国模冰冰炮一区二区| 不卡一区在线观看| 欧美肥胖老妇做爰| 国产日韩欧美麻豆| 亚洲丶国产丶欧美一区二区三区| 蜜臀久久99精品久久久画质超高清 | 欧美一区二区三区播放老司机| 26uuu精品一区二区在线观看| 亚洲欧洲成人av每日更新| 日韩国产欧美三级| 丁香天五香天堂综合| 欧美色涩在线第一页| 久久影视一区二区| 亚洲久草在线视频| 国内一区二区视频| 在线看国产一区| 久久丝袜美腿综合| 亚洲一二三四区| 国产一区二区三区国产| 欧美主播一区二区三区| 26uuu亚洲婷婷狠狠天堂| 亚洲精品国产品国语在线app| 精品在线播放午夜| 91福利小视频| 国产偷国产偷精品高清尤物| 亚洲成av人片观看| 成人在线视频一区| 欧美一区二区三区四区高清| 国产精品乱人伦中文| 奇米精品一区二区三区在线观看| 成人久久18免费网站麻豆| 日韩午夜精品电影| 一区二区三区.www| 国产69精品久久久久777| 欧美一区二区三区在线电影| 国产精品久久久久aaaa樱花 | 在线一区二区三区做爰视频网站| 精品久久久久一区二区国产| 亚洲国产婷婷综合在线精品| 成人性生交大片免费看视频在线| 在线播放欧美女士性生活| 国产精品二区一区二区aⅴ污介绍| 免费久久99精品国产| 一本色道久久综合狠狠躁的推荐 | 91蝌蚪porny九色| 久久综合色鬼综合色| 婷婷夜色潮精品综合在线| 91污在线观看| 欧美激情自拍偷拍| 久久精品国产精品亚洲综合| 欧美亚洲尤物久久| 日韩美女精品在线| 国产91在线|亚洲| 精品人在线二区三区| 日韩精品三区四区| 欧日韩精品视频| 亚洲视频资源在线| 成人午夜视频免费看| www激情久久| 久久精品国产亚洲高清剧情介绍| 欧美日韩免费在线视频| 亚洲精品国产a| 97se亚洲国产综合自在线|