南京紫金山地区鼠类对3种栎树橡子的取食和扩散  

Effect of Small Rodents on Acorn Predation and Dispersal of Three Oak Species in Zijinshan Mountain,Nanjing

作　　者：刘长渠 黄华[1] 杨月琴[1] 易现峰[1] 

机构地区：[1]河南科技大学农学院,河南洛阳471003

出　　处：《河南科技大学学报（自然科学版）》2016年第3期78-81,86,共5页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(31470113);农业虫害鼠害综合治理研究国家重点实验室开放课题(ChineseIPM1404)

摘　　要：为了研究生境破碎化对鼠类扩散种子行为的影响,于2012年10月至2013年5月,在南京紫金山地区选择典型的试验区域释放栓皮栎、麻栎和蒙古栎橡子。研究结果表明:鼠类偏好取食蒙古栎橡子,而很少取食当地的栓皮栎和麻栎橡子;大部分栓皮栎、麻栎和蒙古栎橡子存留在种子释放点,很少被扩散;栓皮栎和麻栎的橡子在释放点有较高的成苗比例,而蒙古栎的成苗率较低。生境破碎化可能引起当地鼠类的种类和数量下降,使得该地区栓皮栎和麻栎的种子扩散过程受阻,原地成苗率高。An experiment was conducted to study the effects of habitat fragmentation on small rodents and Quercus seed fates. Tagged acorns of Q. variabilis,Q. acutissima and Q. mongolica were pair-released and tracked in Zijinshan Mountain,Nanjing during October 2012 to May 2013. The results show that small rodents prefer to acorns of Q. mongolica over those of Q. variabilis and Q. acutissima. Acorn of the three oak species are either eaten in situ or left in seed stations by small rodents,resulting in a few acorns dispersed by rodents.Acorns of Q. variabilis and Q. acutissima are more likely to establish seedlings at seed stations while acorns of Q. mongolica are less likely to produce seedlings. The diminishing of small rodents and the failure of seed dispersal has resulted in seedling establishment of Q. variabilis and Q. acutissima at seed stations.

关 键 词：生境破碎化 鼠类 种子扩散 种子命运 成苗 

分 类 号：Q143[生物学—生态学]