濮阳东方医院男科非常便宜(濮阳东方医院男科治疗阳痿评价比较好) (今日更新中)

CHANGSHA/HARBIN, Feb. 12 (Xinhua) -- As Chinese people are embracing the arrival of the Year of Tiger on Saturday, zoologists are worried about the survival of South China Tigers as the endangered species are facing a serious problem of inbreeding.No traces of the tigers have been found in the last decade, they said.The number of captive South China tigers (Panthera tigris amoyenesis) rose to 92 in 2009 from 60 in 2007 but all the tigers were the offsprings of six wild South China tigers which were caught more than 40 years ago, said Deng Xuejian, a professor with the Department of Biology of Hunan Normal University, based in Changsha, capital of central China's Hunan Province."The inbreeding may lead to genetic freaks, low survival rates and poor physical makeup," Deng said.All the genes have come from two male and four female tigers, which had lead to highly identical genes in the offspring, Deng said."The situation may reduce the genetic diversity and cause degradation or even the extinction of the species," he said.The tigers would lose genetic diversity if their genes were too similar, said Ma Zaiyu, president of veterinary hospital of Changsha Zoo."The number of the members of a species should be at least 1,000 to maintain the stability of the species," Ma said.Zoologists estimated the number of wild South China tigers could have been less than 30 in the 1990s. The remaining wild tigers are presumed to live in the remote areas of Guangdong, Hunan, Fujian and Jiangxi provinces, Deng Xuejian said.Based on analysis of relevant date combining field investigation, Deng estimated the number of wild South China tigers could be less than 10.No traces of wild South China tigers were reported in Hunan in the last two years, said Zhou Shuhuai, director of wildlife protection section of the Hunan provincial forestry bureau."The number is limited and the tigers scatter in different areas, which make it difficult for natural breeding between wild tigers," said Huang Gongqing, a tiger expert at South China Tiger Breeding Base in Suzhou, a city of east China's Jiangsu Province."The extinction of the wild tigers will happen sooner or later," Huang warned.Some experts have said that there may be already no wild South China tigers. "However, we cannot know as the animal is very difficult to trace," Deng said.Ma Zaiyu said to avoid extinction of the species, more captive tigers should be bred, and some genes might be recovered when the population reaches 1,000, while Deng suggested continuous search for wild tigers to enrich the captive tigers' genes.The situation is much better for the Siberian tigers (panthera tigris altaica) in northeast China as the number of the wild ones is quite stable, experts said.The number maintains at around 20 in China, among which 10 to 14 are in Heilongjiang Province and eight to ten are in Jilin Province, said Sun Haiyi, deputy director of Heilongjiang Wildlife Institute"But no more young tigers under one year old have been discovered in the past two years. The reason might be the number of female tigers are less than the males and the animals are relatively isolated by the mountains," Sun said.China established a breeding base for the Siberian tigers in Heilongjiang in 1986 and the number of captive tigers has increased from eight to current more than 800, Sun said.Experts called for more efforts to protect the habitats of the tigers for the purpose of protection and re-wilding of the tigers.

BEIJING, March 17 (Xinhua) -- Liu Yunshan, a senior official of the Communist Party of China (CPC), Wednesday pledged to work with Germany to increase bilateral cooperation."We can enhance our cooperation in various areas, including environmental protection and sustainable development," Liu said when meeting with a delegation of Germany's Green Party, one of the country's major parties.Liu, who is in charge of the CPC's publicity department, said the growth of bilateral ties accorded with common interests of both nations.Liu Yunshan (R), head of the Publicity Department of the Communist Party of China Central Committee, meets with Cem Oezdemir, co-leader of Germany's Green Party, in Beijing, capital of China, March 17, 2010.The CPC and the Chinese government valued ties with Germany and with the Greens, and would expand bilateral cooperation on the basis of equality and mutual respect, Liu said.Cem Oezdemir, co-leader of the Greens, said his party was ready to increase coordination with China on coping with international challenges.Oezdemir and his delegation are visiting China at the invitation of the CPC from March 16 to 20.Wang Jiarui, head of the International Department of the CPC Central Committee, met with the delegation earlier Wednesday to exchange views on promoting party-to-party relations.

SHANGHAI, March 23 (Xinhua) -- There has been no timetable for the construction of a maglev line project between Hangzhou and Shanghai, a spokesman of the Shanghai municipal government said Monday.The project is still undergoing feasibility studies, the official said when responding to media reports last week which said the construction is expected to start this year.The proposal of the ultra-high-speed maglev line, with an estimated cost of 22 billion yuan (3.22 billion U.S. dollars), was approved by the National Development and Reform Commission in 2006.When completed, the line is expected to cut the travel time between Shanghai and Hangzhou, capital of the neighboring Zhejiang Province, to half an hour from the current 2.5 hours.

BEIJING, Feb. 14 (Xinhua) -- A cold front is expected to sweep the northern part of China over the next three days, bringing strong wind and a temperature drop, the China Meteorological Administration (CMA) said Sunday.Small to moderate snow or sleet is forecast in the northern and southwestern part of Xinjiang Uygur Autonomous Region, western Tibet Autonomous Region and the northeastern part of China.The cold front will cause a temperature drop of four to six degrees Celsius since Feb. 15 in central and eastern parts of Inner Mongolia Autonomous Region, north China and northeastern China.The central and the eastern part of China will see a temperature drop of three to five degrees Celsius.Areas in Hunan and Guizhou provinces would expect freezing rain over the following three days.The CMA also said the blizzard condition which had stricken eastern Jiangsu and Zhejiang provinces had eased to small to moderate snow or sleet.The National Meteorological Center had cleared the blizzard warning by 6 p.m. Sunday, 24 hours after the issuance, the CMA said.

ULAN BATOR, Feb. 1 (Xinhua) -- Aid materials provided by the Chinese government arrived on Monday to help Mongolians cope with the worst snowstorms the country has ever seen in three decades.The aid, worth 10 million yuan (1.46 million U.S. dollars), includes food, portable power generators and quilts.At a handover ceremony at the airport, Enkhbold Miyegombo, deputy prime minister of Mongolia and head of the State Emergency Commission, said the timely support was an embodiment of brotherhood between China and Mongolia.Chinese Ambassador Yu Hongyao said he was confident that Mongolians would overcome the disaster with the leadership of the Mongolian government.The Red Cross Society of China has also announced a donation of 30,000 dollars to Mongolia, Yu said.Snowstorms across Mongolia have left over 1.5 million head of cattle dead, dealing a heavy blow to the country's farming industry.

来源：资阳报