三级aa视频在线观看-三级国产-三级国产精品一区二区-三级国产三级在线-三级国产在线

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Environment

Antelope rebound impacts grasslands

By Tang Yue | China Daily | Updated: 2016-10-27 08:11

Antelope rebound impacts grasslands

Tibetan antelopes cross grasslands at Nagqu prefecture in the Tibet autonomous region. The species' population has risen to 250,000, leading to a downgrading of its level of protection. [Photo/Xinhua]


The rebound in numbers of the once-endangered Tibetan antelope has come with some unintended consequences, a conservation official said on Wednesday.

While the species' survival is more assured now, its growing numbers also have put some pressure on fragile mountain grasslands.

The antelope population had declined to about 70,000 in the early 1990s from poaching, but it has reached about 250,000 nationwide, including 150,000 in the Tibet autonomous region, according to a report by the Chinese Academy of Sciences released on Wednesday.

The antelope was downgraded last month from "endangered" to "near threatened", dropping two levels, at the sixth World Conservation Congress of the International Union for Conservation of Nature in Honolulu, Hawaii.

"On one hand, certainly, it is good to see the protection measures are effective," said Yan Xun, a senior wildlife conservation official with the State Forestry Administration. "But on the other, we've received some reports that the animals have done damage to grasslands in some areas."

The damage has not been acute enough to suggest the antelope population should be controlled, Yan said.

The population, which reached almost 1 million a century ago, was in harmony with nature. Now, some habitat has been occupied by people and thus the antelope are more concentrated in certain areas, putting pressure on grasslands, he said.

An academy report based on a three-year study said the ecosystem of the Tibetan plateau has been stable over the past 20 years, although grasslands have decreased by 0.13 percent.

Wang Xiaodan, who co-authored the report, said rehabilitation techniques for degraded grasslands are not well developed and the terrain and climate of the plateau pose extra challenges.

Other challenges remain: Reports show the population of black-necked crane, or Tibetan crane, is 7,000. There are about 10,000 Tibetan yaks, and the Tibetan red deer number 1,000.

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: 国外免费精品视频在线观看 | 中文字幕一区二区三区四区 | 婷婷综合亚洲 | 色国产在线视频一区 | 国产成人精品影院狼色在线 | 91国在线国内在线播放 | 日日噜噜夜夜狠狠tv视频免费 | 日韩欧美亚洲国产一区二区三区 | 青青青青久久精品国产h | 三级毛片网站 | 国产一级三级三级在线视 | 亚洲午夜精品在线 | 亚洲一区欧美一区 | 亚洲日韩成人 | 国产精品www夜色影视 | 国产精品免费观看视频 | 黄色免费毛片 | 亚洲 欧美 日韩在线综合福利 | 黄色网址网站在线观看 | 国产免费拍拍视频在线观看网站 | 麻豆国产入口在线观看免费 | 仑乱高清在线一级播放 | 国产乱人伦偷精品视频不卡 | 爱色视频 | 香蕉成视频片在线观看 | 性网站在线 | 欧美一级特黄aaaaaa在线看首页 | 222在线看片免费 | 国产成人精品亚洲77美色 | 大杳蕉精品视频在线观看 | 日韩区在线观看 | 久久综合中文字幕一区二区三区 | 国产成人高清一区二区私人 | 国内精品视频 在线播放 | 美国一级毛片免费看成人 | 99精品国产一区二区三区 | 国产亚洲美女精品久久久 | 国内黄色精品 | 美女被啪到深处喷水gif动态图视频 | 亚洲系列_1页_mmyy11 | 久久精品韩国三级 |