【摘要】 世界上现存有15种鹤,中国记录有9种,黑龙江省拥有7种,包括丹顶鹤、白鹤、白头鹤、白枕鹤、灰鹤、沙丘鹤及蓑羽鹤。由于栖息地变化,它们均处于濒危状态。为了加强鹤类的保护工作,黑龙江省出台了一系列法规和决定,使鹤类及栖息地得到有效的保护。鹤类种群数量在逐渐恢复。更多还原

【Abstract】 15 species of cranes were recorded in the world, 9 of them were recorded in China, 7 species were recorded in Heilongjiang Province, they are Red-crowned Crane, Siberian Crane, White-naped Crane, Hooded Crane, Common Crane, Sand Crane and Demoiselle Crane. Because of environment change, they are all endangered. In order to save them from danger, much work had been done in Heilongjiang Province. The habitats of cranes had been protected in effectively. The population are increasing gradually.更多还原