陕西黄龙山自然保护区褐马鸡繁殖早期栖息地选择  

Foraging-sites and day-roosting selection of Crossoptilon mantchuricum during early breeding period in Huanglong Mountains Nature Reserve,Shaanxi,China

作　　者：李宏群[1,2] 廉振民[1] 

机构地区：[1]延安大学生命科学学院,陕西延安716000 [2]长江师范学院生命科学系,重庆408100

出　　处：《湖南农业大学学报（自然科学版）》2010年第5期552-555,共4页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：教育部科学技术研究重点项目(206148);陕西省林业厅自然科学重点项目(08-0102)

摘　　要：2006年2—3月,在陕西黄龙山自然保护区采用样带法对褐马鸡(Crossoptilon mantchuricum)繁殖早期取食地和卧息地选择进行研究.结果表明,褐马鸡选择取食地具有以下特征:低海拔,下坡位,小坡度,离道路较近,沟底,乔木和灌丛种类数量较少,乔木、草本、灌丛的盖度及草本高度较小,可视度较大;选择卧息地具有坡度较小,半阳坡,离道路较远,乔木盖度较大,灌丛数量和高度较小,草本高度较小和可视度小的特征.逐步判别分析表明,地理性、乔木数量、灌丛种类和数量及草本盖度等5个因子判别能力最强,由这5个变量构成方程的判别准确率达96.08%,可以较好地将取食地样方与对照样方分开;坡度、坡向、道路距离和乔木盖度等4个因子判别能力最强,由这4个变量构成方程的判别准确率达75.64%,可以较好地将卧息地样方与对照样方分开.Foraging-sites and day-roosting used by brown-eared pheasant （Crossoptilon mantchuricum） were investigated by using line transects in Huanglong Mountains of Shaanxi province during February and March of 2006.Brown-eared pheasant preferred foraging-sites characterized by lower altitude and slope location,smaller slope degree,nearer distance to trail,gully,fewer variety,density and cover of trees and shrubs,smaller cover and height of grasses,and higher visibility class.Brown-eared pheasant like roosting-sites characterized by half sunny slope,smaller slope degree,farther distance to trail,bigger cover of trees,smaller density and height of shrubs,lower height of grasses and lower visibility class.The overall classification model developed from those five variables was successful to distinguish a habitat from randomly used sites ones at probability of 96.08%.Geographical character,density of trees,density and variety of shrubs and cover of grasses were critical factors to discriminate foraging-sites from random plots.The overall classification model developed from those four variables was successful to distinguish used sites from random ones at probability of 75.64%.Slope degree,slope aspect,distance to trail,and cover of trees were critical factors to discriminate day-roosting from random plots.

关 键 词：褐马鸡 取食地 卧息地 陕西黄龙山自然保护区 

分 类 号：Q958.1[生物学—动物学]