2012年冬季鄱阳湖大型越冬水鸟数量与分布

2013年3月8日对鄱阳湖大型水鸟数量和分布进行了同步调查，同时还记录了大型水鸟的栖息生境和成幼比。本次调查共记录到大型水鸟10种，总数量40573只。雁形目水鸟数量占本次调查所有水鸟总数量的88.32%。小天鹅的数量最多，为16552只。栖息生境调查显示，白鹤在泥滩地中的群体个数最多，占比为56.52%，白头鹤、白枕鹤、灰鹤在草地中栖息的群体个数最多，接近或超过70%。4种鹤的幼鸟比例都在18%以上。

Number and Distribution of Large Waterfowls at Poyang Lake in Winter of 2012

The number and distribution of large waterfowls in Poyang lake were synchronized surveyed at March 8, 2013, and its waterfowl habitats and ratio of young ＆amp; adult were recorded. The survey recorded a total 40 573 large waterfowls of 10 kinds. From them Anseriformes number accounted for 88.32% of the total number of all waterfowl. Cygnus columbianus has the largest number of 16 552. Habitats survey showed that populations of Grus leucogeranus has the maximum number, accounting for 56.52%, the number of G. monacha, G. vipio, G. grus groups in grassland habitat was the maximum, accounting for close to or more than 70%. The proportion of each of young birds of four Grus was more than 18%.