摘要
丹顶鹤属国家Ⅰ级重点保护鸟类。影响丹顶鹤种群的最重要原因是生境破坏,使丹顶鹤失去了生存基础。因湿地减少及人为干扰,丹顶鹤的野外种群已经极其稀少。本研究对兴凯湖自然保护区秋季丹顶鹤的觅食生境进行了研究。利用样方法对丹顶鹤觅食地的植被高度、植被密度、植被盖度、水深进行了测量,得到丹顶鹤觅食生境数据。根据对野外调查数据用方差分析以及平均值比较等数学方法处理,获得丹顶鹤最佳觅食地的植被高度为60- 120cm,植被盖度低于75％,植被密度低于600棵／m2,人类干扰距离大于500m。
The foraging habitat of the red-crowned crane in Xingkai lake nature reserve was studied using the sample square method from October 23 to November 3, 2004. The height, density and coverage of the vegetation were measured and then processed by variance analysis and mean comparison. The data of the best foraging area of the red-crowned crane were as follows： height of vegetation 60-120 cm; density lower than 600 plant/m^2, coverage 75%, distance from human disturbance 〉500m.
关键词
丹顶鹤
觅食生境
保护
兴凯湖
Red-crowned crane
Foraging habitat
Conservation
Xingkai Lake
