北京高校喜鹊巢址选择的主要生态因素

Ecological Factors Affecting Choice of Pica pica sericea Nest Location in Universities in Beijing

根据从2003～2005年每年一次关于北京近20所高校校园喜鹊（Pica pica sericea）巢址的分布情况的调查，对影响高校校园喜鹊巢址选择的因素进行了分析，结果表明营巢树因素（营巢树的高度、胸径、巢位高度、巢上方的植被盖度）和环境因素（嘈杂度和食物的丰富程度）都会影响喜鹊对巢址的选择。研究结果对如何进行校园绿地的规划以及鸟类保护具有一定的指导作用。

This study is based on the investigations of factors affecting Pica pica sericea nest location in 20 universities in Beijing annually from 2003 to 2005. Through the analyzing and discussing of the factors, we find out that both the nest location trees （height and diameter of trees and the height of the nests, the coverage of the nests） and environment factors （ the level of noise and abundance of food ） can affect Pica pica sericea nest location. The acquired results can direct the campus construction and conservation of birds.