塔城盆地大鸨迁徙前期种群分布与集群大小研究  

Distribution and Grouping Size of Great Bustard Preceding Migration in Tacheng Basin

作　　者：汪沐阳 徐峰[1] 陈强 库尔班江.哈那哈提 杨维康[1] David Blank 

机构地区：[1]中国科学院新疆生态与地理研究所中国科学院干旱区生物地理与生物资源重点实验室,乌鲁木齐830011 [2]塔城地区动植物保护管理办公室,新疆塔城834700 [3]伊犁地区动植物保护办公室,新疆伊宁835000

出　　处：《四川动物》2015年第6期921-924,929,共5页Sichuan Journal of Zoology

基　　金：中国科学院西部之光人才培养计划西部博士资助项目(XBBS201308);国家自然科学基金项目(31401988;U1303301);中国科学院外国专家特聘研究员项目(2011T1Z42)

摘　　要：2014年10月采用样线法调查了塔城地区大鸨指名亚种Otis tarda tarda迁徙前期种群分布与集群特征。调查面积约2000 km2。调查期间共记录大鸨54群374只,主要分布于阿不都拉乡、恰夏乡和168团3个区域。受食物可利用度影响,迁徙前期塔城大鸨主要在冬小麦和春小麦留茬地中采食。不同分布区域和栖息地类型没有影响大鸨的平均集群大小。农田生态系统食物资源分布均匀,导致迁徙前期大鸨多集小群,偶集大群,以避免集大群而带来的资源竞争。Line transect method was used to survey the distribution and grouping pattern of preceding migration of great bustard Otistarda tarda tarda in Tacheng basin in October 2014. The total survey area was 2000 km2. A total of 374 individuals were observed from 54 groups. The great bustards mostly distributed in three areas： Abudula town,Qiaxia town and the 168 regiment. The great bustards were mostly found in winter wheat and stubble wheat agricultural fields due to the abundant food.The mean group size was not influenced by distribution areas or habitat types. In preceding migration,the great bustards usually formed small groups to decrease the food competition due to the evenly distributed food resource in agro-ecosystem.

关 键 词：大鸨指名亚种 集群 迁徙 

分 类 号：Q959.7[生物学—动物学] Q958.1