?? ??50??????????????
![](https://image.chezhanri.com/2019/0224/20190224103901826.jpg)
????:1?????wx:??????????
2????????????
3?????
4??????
5?????????
??,???????????,??3???????,????50????????????
???????????????????????????,????3700?????????,????????????2300????????????,???????????1800????,????????????????????1978??????????????????????????????????,??1965???????????,??????????????????????????????50?????2019????????????(IUCN)????????????????,?(CR)????????????????
?????????????,??????????????????????,????????????3?????????????,3?????????50??????????????
????,???????,?????????????????????????,????????????????50??????????????????,??50???????????????,???????50?,??????,???????,?????????????????????,??,?????????????,????????????? (?? ??? ??????? ??????? ??????????)
????????????:??????????