南充市树麻雀种群数量及时空分布的研究

2004年10月至2006年2月，笔者对四川省南充市城区、场镇和农村中的树麻雀种群数量、时空分布及其对栖息地的选择利用进行了调查．结果显示：在城区和场镇中树麻雀已恢复为常见鸟类；种群数量季节变化较显著，春季最低，秋季最高．农村中树麻雀仍是罕见种．在城区、场镇树麻雀的夜宿地为行道树、竹林和建筑物的缝隙．除传统房屋的缝隙外，它们还在现代建筑的各种缝隙中营巢．树麻雀觅食地为荒草地、食堂附近、垃圾堆、粮仓附近等，而在农村中的麦田、稻田、菜地和果园里未见到树麻雀觅食．对导致树麻雀种群数量变动的原因进行了讨论分析，认为剧毒农药、鼠药的禁用和城区面积的扩大对南充市城区、场镇树麻雀种群数量的恢复起有较大的作用，但农村中农药污染的影响仍比较严重，致使树麻雀种群恢复不明显．

Study on Population Number and Space-Time Distribution of Sparrows in Nanchong

From October 2004 to February 2006,we made a survey about population number,space-time distribution and selection about habitat place of sparrow(Passer monlanus) in Nanchong.The result display: the recover of sparrows in urban and town is obvious.The change of population number in different season is obvious too.The habitation places of sparrows are mainly on the roadside trees,bamboo forests and the gap of building in urban and town.The breeding places of sparrow in urban is variegated.Their foraging place are uneven ground,round the canteen,garbage dump and grain store,but cornfield,rice paddy,pot garden and orchard in suburban,we have not found them.We think: the main reasons of recover in urban and town are forbidden of some severe toxicity pesticide,rat poison and the extend of urban area.But pesticide pollution is still serious in villages.