高速公路防护林内喜鹊和灰喜鹊的巢址选择

Nest-site selection of Pica pica and Cyanopica cyana in protection forest of freeways

2013年1月,实地记录高速公路道旁防护林内喜鹊和灰喜鹊巢址信息,采用SPSS 17.0统计分析。结果表明,61.19%的巢址选择>10 m的乔木,极少选择≤5 m的小树(p<0.01)。10 m半径内,47.1%为单巢型,52.9%为2—5巢,为偏向集群型。58.11%选择在距离高速公路5 m<X≤10 m区间内,显著高于≤5m区间和>10m区间(p<0.05)。89.21%选择在防护林中间和内侧,极显著高于单排防护林和防护林外侧(p<0.01)。水源生境为巢址第一选择,显著高于树林、农田、建筑和荒地(p<0.05)。

In January 2013, the information of nest sites of Pica pica and Cyanopica cyana in protection forest on sides of highways was recorded on site and statistically analyzed with SPSS 17.0. About 61.19 percent of nest sites were located on arbors higher than 10 m while the minority chose the trees lower than 5 m（p 〈 0.01）. About 47.1 percent of nest sites were single nest type whereas the remaining 52.9 percent of those that were labeled as preferred cluster type ranged from 2-5 nests within a 10 m radius. About 58.11 percent of nest sites were located in the scope of 5 to 10 m distance from highways demonstrating a significant higher proportion than that beyond this scope（p 〈 0.05）. About 89.21 percent of nest sites were distributed in the center or the inside of protection forest, obviously more than in single row or outside of protection forest（p 〈 0.01）. As the first candidate of nest sites, the proportion of water source habitats was far more than that of forests, farmlands, buildings and barren lands（p 〈 0.05）.