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时间:2018-01-02
《山西芦芽山自然保护区虎纹伯劳生态习性探究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、山西芦芽山自然保护区虎纹伯劳生态习性探究 摘要2011—2013年4—10月,在山西芦芽山国家级自然保护区对虎纹伯劳的生态习性进行了观察。结果表明:虎纹伯劳在该区为夏候鸟,最早4月23日迁来,最晚9月27日迁走,居留期为147~155d。迁来初期,虎纹伯劳常在低山灌丛带、河谷地带的向阳处或电线、电杆活动。进入繁殖期,虎纹伯劳多转移向中海拔地区的疏林灌丛带。虎纹伯劳在该区的种群密度在8、9月最大,每千米遇见只数分别为0.51、0.58只;在4、6月种群密度最小,每千米遇见只数0.18只,3年在该区的种群密度平均为0.29只
2、/km。繁殖前(5月)每千米遇见只数为0.33只,繁殖后(9月)每千米遇见只数0.58只,繁殖后比繁殖前每千米遇见只数增长76%。繁殖期5月下旬至7月中旬,5月上旬营巢,雌雄鸟共同营巢,营巢期7~8d,窝卵数4~6枚,孵卵由雌鸟承担,孵化期15~16d,雏鸟晚成性,巢内育雏14~16d,平均孵化率为89.7%,平均成活率为89.2%,繁殖力2.2只,食物主要以昆虫为主,占食物种类的98%以上。关键词山西芦芽山自然保护区;虎纹伯劳;生态习性中图分类号Q954;Q959.7文献标识码A文章编号1007-5739(2013)24
3、-0267-029StudyOntheEcologicalHabitofLaniusTigrinusinShanxiLuyaMountainNatureReserveGUORui-ping(ShanxiLuyaMountainNationalNatureReserve,NinwuShanxi036707)AbstractLaniustigrinus′secologicalhabitwasstudiedfromApriltoQctoberintheyearbetween2011and2013inShanxiLuyaMount
4、ainNatureReserve.TheresultsshowedthatLaniustigrinuswasasummerbirdinthisarea,itmovedtothisareaonApril23andreturnedonSeptember27andstayedhereabout147~155d.Atthebeginningofmigrate,Laniustigrinusoftenlivedinlowmountainshrublandrivervalleywithasunnyexposureorwirepole.L
5、aniustigrinusmovedtothewoodlandsshrublandofmiddleelevationareaduringthebreedingseason.PopulationdensityofLaniustigrinusintheareawasthegreatestinAugustandSeptember,everykilometermeetnumberwas0.51and0.58respectively;PopulationdensityofLaniustigrinusintheareareachedt
6、heleastinAprilandJune,everykilometermeetnumberwas0.18,average9populationdensityofthisareawas0.29perkilomenterduringthethreeyears.Beforebreedingeverykilometermeetnumberwas0.33inMay,afterbreedingeverykilometermeetnumberwas0.58inSeptember,everykiolmetermeetnumberincr
7、esasedby76%thanbeforebreeding.BreedingperiodfromlateMaytomidJuly,LaniustigrinusstartednestinggenerallyinearlyMay.Maleandfemalebirdnestedtogether,nestingperiodwas7~8d,clutchsizewas4~6pieces,eggswasbornedbythefemale,theincubationperiodwas15~16d,Nestlingsgrewtomaturi
8、tylate,Thenestbroodperiodwas14~16days,averagehatchingratewas89.7%,averagesurvivalratewas89.2%,thefecunditywas2.2,insectsplayedanimportantroleinwhatLaniu
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