濒危物种 - 濒危物种-课件（PPT·精·选）.ppt

Endangered species is a native species that faces a significant risk of extinction in the near future throughout all or a significant portion of its range. ?According to scientists, more than one and one-half million species exist on the earth today. However, recent estimates state that at least 20 times that many species inhabit the .?In the United States, 735 species of plants and 496 species of animals are listed as threatened or endangered.?266 of these listed species have recovery plans currently under development. ?There are more than 1,000 animal species endangered worldwide. Top 10 Most Endangered Species? Rhino黑犀牛? Panda大熊猫?3. Sumatran tiger 苏门达腊虎? Sturgeon欧洲鳇?? Snapping Turtle大鳄龟? Turtle玳瑁龟? Leaf Mahogany大叶桃花心木?-Cheeked Parrot绿颊鹦鹉? Shark灰鲭鲨Giant panda?The giant panda is listed as endangered in the World Conservation Union's ('s) Red List of Threatened Animals. ?There are about 1,600 left in the wild. More than 160 pandas live in zoos and breeding centers around the world, mostly in tiger苏门达腊虎Sumatran tigers Only distribute in Indonesia ‘s Sumatra environment they live is from plain forest to high mountains. And there only remain about 400-500 of the wild Sumatran River Dolphin?The dolphins live mainly in downstream in Yangtze River .They are usually in pairs or more than 10 principals together. The existing quantity is rare, 20 years ago the scientists estimated that there are only about 300. The dolphins have already faced the risk of depopulation at that time. 白鳍豚Monk sealHawaii monk seals, Mediterranean(地中海)monk seals Caribbean(加勒比海)monk seals. Scientists have proved that Caribbean monk seals are extinct. Mediterranean monk seals, in 2008,there are only about 500 the whole Parrot As a result of this parrot is very beautiful, t