鼠类对山杏(Prunus armeniaca)种子扩散及存活作用研究(英文)  

Effect of rodents on seed dispersal and survival of wild apricot (Prunus armeniaca)

作　　者：张知彬[1] 王福生[1] 

机构地区：[1]中国科学院动物研究所

出　　处：《生态学报》2001年第5期839-845,共7页Acta Ecologica Sinica

基　　金：The project was supported by National Natural Science Foundation of China( No.39893360 ) and Foun-dation of Chinese Academy of

摘　　要：虽然有关鼠类搬运森林种子的证据已很清楚 ,但这些被移走种子的存活情况却知之甚少。提出了一个新的标记和跟踪种子的方法——标签法 ,即将种子拴一带有编码的细长金属片 ,研究了北京东灵山地区山杏 ( Prunusarmeniaca)种子的扩散距离和存活率。于 1 998年 6月 1 9～ 2 0日 ,7月 3日和 1 0月 2 3日共在 2 4个样点释放 1 4 4 0粒山杏种子。几乎所有释放的种子在 1 0 d内被鼠类取走。夏天释放的种子比秋天释放的种子消失的速度快。大多数种子的扩散距离在 2 0 m以内 ,小于鼠类的活动距离。鼠类吃掉种子的速度很快 ,但当种子变得稀少时 ,种子存活率有所提高。山杏种子 6。It is well recognized that rodents remove most seeds of forests.But few are known about the seed survival of the removed seeds.In this study,by using a new method of labeling seeds with small pieces of coded tin tags,the seed removal and survival of the wild apricot( Prunus armeniaca ) were studied in a mountainous area (40°00′N,115°30′E) of Beijing,China.A total of 1440 tin tagged seeds were released on June 19～20,July 3,and October 23,1998.Almost all the tin tagged seeds disappeared within 10 days due to the removal by rodents.The seeds released in summer disappeared more quickly than in autumn.In the same season of summer, seeds in large clumps (40 seeds/plot) disappeared more quickly than the seeds released in small clumps (20 seeds/plot). Most of the tagged seeds or their fragments were dispersed less than 20 m from the original releasing plots. Seeds were destroyed rapidly by rodents, but seed survival was obviously improved when seeds became rare. The daily seed survival rate during June to July was lower than that during the other periods of the year.

关 键 词：山杏 鼠类 种子命运 森林更新 种子存活 协同进货 

分 类 号：S718.52[农业科学—林学]