辽宁猛禽迁徙规律的研究

On the migration law of raptor in Liaoning province

辽宁是猛禽迁徙的重要停歇站 ,是候鸟进出东北的咽喉之地 .基于辽宁在研究猛禽迁徙上所具有的优越地理位置 ,于 1 996～ 1 998年 3～ 5月、9～ 1 2月连续三年在大连老铁山和锦州绥中地区对辽宁省猛禽的迁徙规律做了详细的调查和研究 .结果表明 :辽宁是我国猛禽分布最多的省份之一 ,共有 2目、3科、2 3属、4 2种 ,占我国猛禽种数的 4 5 7% ;多数为旅鸟 ,占辽宁省猛禽种数的近一半 .猛禽迁徙不像其他鸟类那样成群迁徙 ,而是单独迁飞或组成保持相应距离的松散群迁飞 .春季迁徙始于 2月初 ,止于 5月初 ,高峰期在 3月下旬至 4月上旬 ;秋季迁徙始于 9月上旬 ,止于 1 2月初 ,高峰期在 9月下旬至 1 0月上旬 .猛禽迁徙的最适天气条件是晴朗、少云、能见度好、三级以上的东北风或西北风 .

Liaoning province is one of the important ceasing stations for the raptors during their migrating stage,and Liaoning province is the terra that raptors must pass through when they migrate,so selected Liaoning province to develop study.Investigated the migration laws of raptors for three years in Laotieshan in Dalian city and Suizhong in Jinzhou city during March to May and September to December in 1996 to 1998.The results show that Liaoning province is one of the provinces where raptors are the most.There are 42 species raptors in Liaoning province,they belong to 2 orders,3 families,23 genuses.The number of raptor species of Liaoning occupy 45.7 percentage of total in China,most of them migrate by individual or by loose group.The raptors began to migrate at the early days of Feburary and end at the early days of May during the spring,the migrating fastigium appears at the last ten-days of March to the first ten days of Aprial.The raptors began to migrate at the early days of September and end at the early days of December during the autumn ,the migrating fastigium appears at the last ten-days of September to the first ten days of October.The fittest weather is sunny,good visibility with upwards third class northeaster of northwester winds.