少妇无码精品23p_亚洲一区无码电影在线观看网站 _悠悠色一区二区_中文字幕亚洲无码第36页

www.h5a3.com

Scientists to Help Save Giant Pandas


They just may be the world's most adored, most adorable animals, and there is no better place to fall under their spell than this remote, mountainous region where most of the world's wild pandas still live.

Sichuan Province is also home to the world's two largest panda reserves. They are part tourist attraction, but mostly serious research centers, where scientists from China and other countries work side by side to save the panda from extinction with some notable success recently in captive breeding.

"We have four cubs from last year," said Mike Allen, who went to the area from Zoo Atlanta. "We have five from the year before ... and they have made incredible progress here."

Incredible, because pandas have enormous difficulty breeding on their own.

Inept With the Ladies

Many males, it seems, are downright inept at their reproductive role, a big problem since females are fertile for only three days each year. And even when they do succeed, pandas are born so tiny -- smaller than a human hand -- they struggle to survive. So scientists here have spent years helping the pandas help themselves.

"Five or 10 years ago, there was less than a 50% survivorship rate for young cubs into adulthood," said Suzanne Hall, a reproductive specialist from the San Diego Zoo. "But in the last several years that's improved dramatically."

Eleven-year-old male Gao Gao and 5-year-old Guo Guo recently were brought together to give it the old college try, and, as expected, it didn't work. So the professionals moved in, sedating Guo Guo with a dart and then wheeling her off to the operating room for a painless artificial insemination procedure.

Today, this technique accounts for more than half the births of pandas in captivity.

Despite all the human affection and the extensive breeding efforts under way here, the sad truth is the future of these animals is still very uncertain. Their natural habitat is still threatened by farming, logging and poaching. Even the growing numbers of well-meaning ecotourists are taking their toll as many roads and hotels are built in the wild.

"If the population keeps expanding farther and farther into the forest and up the mountains, they're going to wipe out the pandas," Allen said.

The hope is that human expansion can be tamed to give the scientists and the pandas more time to make more progress.

(People's Daily May 13, 2002)

In This Series

Application Procedures for Loan of Giant Pandas

Giant Panda Museum Established in Southwest China

Panda Project to Bear Positive Results

Giant Panda Basi Recovered

Methods to Improve Propagation of Pandas

12 Giant Pandas Artificially Bred This Year

Another Giant Panda Population Found in Sichuan

Returning Giant Pandas to Nature

Panda's Hometown Lures Tourists, Investors With Wonders

Test-tube Baby Panda Experiments Under Way

References

Archive

Web Link



Copyright ?2001 China Internet Information Center. All Rights Reserved
E-mail: webmaster@china.org.cn Tel: 86-10-68326688
香蕉视频一级| a级毛片免费观看网站| 国产国语在线播放视频| 欧美激情一区二区三区视频| 久久久成人影院| 91麻豆tv| 精品在线视频播放| 日本特黄特黄aaaaa大片| 国产一级强片在线观看| 午夜精品国产自在现线拍| 日韩专区亚洲综合久久| 久久精品欧美一区二区| 国产网站在线| 欧美α片无限看在线观看免费| 国产伦精品一区三区视频| 亚久久伊人精品青青草原2020| 久久99中文字幕| 国产美女在线观看| 免费国产一级特黄aa大片在线| 欧美夜夜骑 青草视频在线观看完整版 久久精品99无色码中文字幕 欧美日韩一区二区在线观看视频 欧美中文字幕在线视频 www.99精品 香蕉视频久久 | 久久久久久久久综合影视网| 色综合久久手机在线| 国产伦精品一区二区三区在线观看| 国产视频一区在线| 免费国产在线观看| 精品国产一区二区三区免费| 国产福利免费观看| 亚洲第一色在线| 黄视频网站免费观看| 天天做日日爱| 一本高清在线| 国产网站在线| 精品国产香蕉在线播出| 九九九在线视频| 精品在线观看国产| 久久精品免视看国产成人2021| 人人干人人草| 亚洲 男人 天堂| 久久99中文字幕| 欧美1卡一卡二卡三新区| 一本高清在线| 精品视频在线观看一区二区| 国产a毛片| 日韩一级黄色| 日韩一级黄色片| 欧美另类videosbestsex久久| 国产一区二区精品久久91| 日韩一级黄色| 日本在线不卡免费视频一区| 国产一区国产二区国产三区| 日本乱中文字幕系列| 亚洲精品永久一区| 久久精品店| 青草国产在线| 日本伦理片网站| 久久福利影视| 九九九在线视频| 午夜精品国产自在现线拍| 亚洲天堂免费观看| 黄视频网站免费看| 亚洲精品中文字幕久久久久久| 成人在免费观看视频国产| 久久精品免视看国产成人2021| 999久久久免费精品国产牛牛| 999久久久免费精品国产牛牛| 精品久久久久久影院免费| 毛片成人永久免费视频| 日日夜夜婷婷| 国产成人女人在线视频观看 | 国产91精品一区二区| 99久久精品国产片| 国产一区国产二区国产三区| 日本久久久久久久 97久久精品一区二区三区 狠狠色噜噜狠狠狠狠97 日日干综合 五月天婷婷在线观看高清 九色福利视频 | 国产精品自拍在线观看| 国产伦精品一区二区三区在线观看| 久久精品免视看国产明星| 色综合久久天天综合绕观看| 国产精品1024永久免费视频| 久草免费在线视频| 九九干| 国产a网| 麻豆系列国产剧在线观看| 欧美夜夜骑 青草视频在线观看完整版 久久精品99无色码中文字幕 欧美日韩一区二区在线观看视频 欧美中文字幕在线视频 www.99精品 香蕉视频久久 | 国产高清视频免费| 黄视频网站在线免费观看| 国产a视频| 成人a级高清视频在线观看| 韩国毛片基地| 久草免费在线视频| 欧美一区二区三区性| 亚洲天堂在线播放| 你懂的福利视频| 国产激情一区二区三区| 香蕉视频久久| 99色视频在线| 国产极品精频在线观看| 国产高清在线精品一区a| 日韩中文字幕在线亚洲一区| 亚洲第一色在线| 国产伦精品一区三区视频| 国产精品免费精品自在线观看| 国产成人啪精品视频免费软件| 亚洲 激情| 精品久久久久久中文字幕一区 | 日本久久久久久久 97久久精品一区二区三区 狠狠色噜噜狠狠狠狠97 日日干综合 五月天婷婷在线观看高清 九色福利视频 | 欧美国产日韩在线| 精品视频一区二区三区| 色综合久久手机在线| 精品视频一区二区三区免费| 九九精品在线播放| 四虎久久影院| 美女免费毛片| 亚洲第一色在线| 精品美女| 精品在线视频播放| 日韩在线观看免费完整版视频| 久久久成人网| 成人免费网站视频ww| 亚洲天堂在线播放| 国产国语在线播放视频| 久久精品欧美一区二区| 欧美激情影院| 国产一级强片在线观看| 黄色短视频网站| a级毛片免费观看网站| 日韩专区亚洲综合久久| 久久久成人网| 一级女人毛片人一女人| 九九免费精品视频| 欧美激情中文字幕一区二区| 国产成人精品影视| 国产综合91天堂亚洲国产| 日韩字幕在线| 超级乱淫黄漫画免费| 尤物视频网站在线观看| 91麻豆国产级在线| 国产91素人搭讪系列天堂| 毛片电影网| 中文字幕一区二区三区精彩视频| 亚久久伊人精品青青草原2020| 欧美另类videosbestsex高清| 久久国产一久久高清| 欧美国产日韩久久久| 成人免费一级毛片在线播放视频| 精品久久久久久综合网| 99热精品一区| 日本免费乱理伦片在线观看2018| 毛片成人永久免费视频| 韩国三级一区| 91麻豆国产级在线| 精品久久久久久综合网| 欧美激情一区二区三区中文字幕| 黄色短视频网站| 国产伦久视频免费观看 视频| 欧美电影免费看大全| 精品久久久久久影院免费| 久久福利影视| 沈樵在线观看福利| 国产伦精品一区二区三区在线观看| 精品在线免费播放| 国产a视频| 中文字幕一区二区三区精彩视频 | 国产网站麻豆精品视频| 国产成人啪精品| 色综合久久久久综合体桃花网| 精品国产一区二区三区精东影业 | 韩国三级香港三级日本三级| 欧美激情影院| 欧美激情一区二区三区视频| 999久久66久6只有精品| 精品美女| 日韩中文字幕一区| 欧美夜夜骑 青草视频在线观看完整版 久久精品99无色码中文字幕 欧美日韩一区二区在线观看视频 欧美中文字幕在线视频 www.99精品 香蕉视频久久 | 欧美一区二区三区性| 韩国毛片免费大片| 精品国产亚一区二区三区| 四虎影视久久久| 国产高清在线精品一区二区| 亚洲 欧美 91| 国产视频久久久久| 久久久久久久免费视频| 毛片成人永久免费视频| 国产精品自拍在线观看| 超级乱淫伦动漫| 四虎精品在线观看| 国产一区二区精品久久91| 国产不卡福利| 久久成人综合网| 国产福利免费观看| 精品国产亚洲一区二区三区| 欧美日本二区| 亚洲第一色在线| 深夜做爰性大片中文| 韩国三级香港三级日本三级la| 国产精品1024在线永久免费| 午夜欧美成人久久久久久| 久久精品人人做人人爽97| 日韩在线观看免费完整版视频| 精品视频一区二区三区免费| 国产视频久久久久|