斑翅山鹑巢址选择的研究

STUDIES ON THE NEST SITE SELECTION OF DAURIAN PARTRIDGE

１９９１－１９９３年在山西宁武县对斑翅山鹑的巢址选择进行了研究。野外工作中共发现６０个巢，其中绝大多数位于远离林地的农田或灌丛地带，６６．６７％的巢位于向阳的东南坡和西南坡上。对巢址与随机选取的非巢样点所进行的对比分析发现，在１２个栖地参数中，影响巢址选择的５个因素依次为：落叶的数量、地缘宽度、干草的数量、灌丛宽度和梯田高度。判别分析的结果表明，落叶的数量和干草的数量是区别巢址与非巢样点的两个最重要参数。斑翅山鸽倾向于把巢址选在落叶和干草数量相对较多、各层植被覆盖度相对较高的地方。Ｐ＜０．０１表２斑翅山鹑的巢址与随机选取的非巢样点的判别分析结果Ｔａｂ．２ＴｈｅｒｅｓｕｌｔｓｏｆｄｉｓｃｒｉｍｉｎａｎｔａｎａｌｙｓｉｓｂｅｔｗｅｅｎＤａｕｒｉａｎＰａｒｔｒｉｄｇｅｎｅｓｔ－ｓｉｔｅｓａｎｄｒａｎｄｏｍｃｈｏｓｅｎｎｏｎ－ｎｅｓｔｓｉｔｅｓｐ＜０．０１标准相关系数＝０．７４４２．３落叶数量、干草数量与巢址选择某个地点被斑翅山鹑选作巢址的可能性的大小可以通过一种选择性指数（ｓｅｌｅｃｔｉｏｎｉｎｄｅｘ）来予以反映。选择性指数可通过下式求得：Ｓ＝ｎ／Ｎ其中ｓ为选择性指数，ｎ为具有某个特定参数值的巢数，Ｎ为具有该特定?

This paper presents the results of a study on the nest site selection of the Daurian Partridge Perdix dauuricae in Ningwu County of Shanxi Province from 1991 to 1993.Totally 60 nests have been found in the field work, with most of them were located in the farmland and shruby areas.About 67% of the nests built in the sunny southeastern slope and southwestern slope.The comparisons of the 12 habitat variables which may affect nesting success between the nest sites and random chosen non-nest sites within 100 m from the nest show that,5 variables influenced the nest site selection of the Daurian Partridge are(in decreasing order of importance):the amount of leaf litter,the width of field boundary,the amount of dead grass,the width of shrub and the height of the bank at the base of the field boundary.The results of discriminant analysis indicate that,the amount of leaf litter and the amount of dead grass are the two most important variables distinct the nest sites andnonnest sites.In conclusion,the Daurian Partridge prefer to select the site in thefarmland and shruby areas which have more leaf litter and dead grass combined with relativehigher vegetation coverage to build its nest.