论文部分内容阅读
Antelope once sprinted on vast grasslands in the north and west of China was very popular and advantageous herbivore specie before. Przewalski， as well as Tibetan antelope， wild donkey， wild yak， Tibetan gazelle and Mongolian gazelle， requires a large habitat area on grassland. For example， millions of Mongolian gazelle once migrated to the territory of China in winter， and moved back to the Mongolian and Russian Daurian Steppe for reproduction in summer. Half a century ago， thousands of Przewalski also lived in Qinghai Lake basin， constituting the animal wonders of Eurasia.
EndangeredStatus
The Przewalski in history was distributed in Erdos Plateau in Inner Mongolia， East Qinghai and Gansu province. Due to the increased human activities and habitat deterioration， currently Przewalski is only distributed in the Qinghai Lake area. Przewalski was considered as "Little known antelope" that foreign scientists have not yet carried out studies in the book of "Wild Life on Northern Tibet Grasslands" by Dr. George Schaller， a famous wildlife biologist.
Today， 70% of grasslands have been built as fenced pastures， which rigidly cuts wildlife habitat environment， and affects feeding and migration of wildlife. As a result， wildlife habitat is fragmented， and habitat of wildlife declines causing a genetic isolation between populations. This effect of isolation is even greater than by mountains and great lakes. Fences make it easier for hunters to hunt wild animals. The wire fence even hangs wildlife to death or injury， which affects the survival and reproduction of wildlife.
EndangeredStatus
The Przewalski in history was distributed in Erdos Plateau in Inner Mongolia， East Qinghai and Gansu province. Due to the increased human activities and habitat deterioration， currently Przewalski is only distributed in the Qinghai Lake area. Przewalski was considered as "Little known antelope" that foreign scientists have not yet carried out studies in the book of "Wild Life on Northern Tibet Grasslands" by Dr. George Schaller， a famous wildlife biologist.
Today， 70% of grasslands have been built as fenced pastures， which rigidly cuts wildlife habitat environment， and affects feeding and migration of wildlife. As a result， wildlife habitat is fragmented， and habitat of wildlife declines causing a genetic isolation between populations. This effect of isolation is even greater than by mountains and great lakes. Fences make it easier for hunters to hunt wild animals. The wire fence even hangs wildlife to death or injury， which affects the survival and reproduction of wildlife.