Shan Ji-Hong, Ma Jian-Zhang, Li Yan-Kuo, Qian Fa-Wen, Tu Xiao-Bin
College of Wildlife Resources, Northeast Forestry University, Harbin, China.
Dongwuxue Yanjiu. 2012 Aug;33(4):355-61. doi: 10.3724/SP.J.1141.2012.04355.
Using simultaneous land surveys, we monitored the population size and spatial distribution of wintering Siberian cranes at 64 lakes around Poyang Lake between 1998 and 2010. The results showed that 46 lakes were inhabited by wintering cranes, and in 25 of those, the number of wintering cranes accounted for more than 1% of the Siberian cranes' global population. The lakes where over 40.0% of the global population, e.g. 1 280 individuals, included Dachahu Lake in Jiujiang region, and Banghu Lake and Candouhu Lake in the Poyang Lake Nature Reserve. The average yearly population of the wintering Siberian crane in the Poyang lakes was 3 108±849, with the maximum of 4 004 individuals in winter 2002. On the whole, there was no drastic fluctuation, but population numbers have shown considerable fluctuation since 2003. We also found the Poyang Lake Nature Reserve was the major wintering area of the Siberian crane, with over 60% of Siberian cranes wintering in the reserve since 2002 (except in 2006). Most of the inhabited lakes are covered in existing nature reserves, though some lakes outside the reserve were also considerably used by Siberian cranes.
我们在1998年至2010年间，通过同步陆地调查，监测了鄱阳湖周边64个湖泊中越冬白鹤的种群数量和空间分布。结果显示，46个湖泊有越冬白鹤栖息，其中25个湖泊的越冬白鹤数量占全球白鹤种群数量的1%以上。全球种群数量超过40.0%（如1280只个体）的湖泊包括九江地区的大汊湖、鄱阳湖自然保护区的蚌湖和蚕豆湖。鄱阳湖越冬白鹤的年平均数量为3108±849只，2002年冬季最多达4004只。总体而言，数量没有剧烈波动，但自2003年以来种群数量出现了较大波动。我们还发现，鄱阳湖自然保护区是白鹤的主要越冬地，自2002年以来（2006年除外），超过60%的白鹤在该保护区越冬。大多数有白鹤栖息的湖泊都在现有的自然保护区内，不过保护区外的一些湖泊也被白鹤大量利用。
