Effects of forest rodents on Quercus variabilis seed fate under soil and litter cover in Funiu Mountains

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摘要：

在伏牛山国家级自然保护区研究了覆盖处理下森林鼠类对建群种栓皮栎种子扩散和命运的影响,对人工释放种子分别设置了2cm土壤覆盖(SC)、5cm(LC)和10cm枯落物覆盖(HC)3种处理,探讨不同覆盖处理下贮食鼠类与森林种子间的作用机制,以期为制定南水北调水源区人工促进天然更新措施积累基础数据.结果发现:1)3种处理显著影响栓皮栎种子的留存,种子留存率由高到低始终为HC、SC、LC;2)HC处理的原地捕食(EIS)量显著低于其他两种处理,但3种处理间种子埋藏率未呈现显著差异;3)在SC下,动物更倾向于将种子搬运至(1,2]m,而在LC和HC处理下动物更倾向于将种子搬运至(5,10]m.结果表明,覆盖处理对伏牛山水源林建群种种子扩散动态、种子命运以及种子扩散距离均可产生显著影响,在直播造林时,对种子进行10cm枯落物覆盖可延缓动物发现的时间,这在一定程度上为非休眠性白栎类橡子提供了临时庇护并为种子萌发争取了时间.

To explore the interaction mechanisms between rodents and dominant species regeneration in the Funiu Mountain Nature Reserve,which is also water source area of the south to North Water Transfer Project.The effects of forest rodents on seed dispersal and fate of Quercus variabilis under2cm soil cover(SC),5cm litter cover(LC),and10cm litter cover(HC)were conducted by artificial released seeds in the Funiu Mountain Nature Reserve.The results showed that:(1)Survival dynamics of Q.variabilis seeds were significantly affected by the cover treatments.The survival rates of seeds from high to low is always HC,SC,LC.(2)the rate of seed eaten in situ under HC was significantly lower than the other two treatments,but no significant difference was found among the3treatments.(3)Seeds under SC were more likely carried to distance of(1,2]m,while the animals were more inclined to transport the seeds to the distance of the(5,10]m in the treatment of LC and HC.Therefore,10cm leaf litter may protect Q.variabilis seeds to interference the feeding of the rodents and enhance their survival by making them more difficult to detect.This also strives fortimefor non dormant white oak acorn to germinatein some sense.

作者：

史晓晓魏凯璐闫慧慧贺渤蒋铮于飞

Shi Xiaoxiao;Wei Kailu;Yan Huihui;He Bo;Jiang Zheng;Yu Fei(College of Life Sciences, Henan Normal University, Xinxiang 453007, China)

机构地区：

betway官方app 生命科学学院

出处：

《betway官方app 学报：自然科学版》 CAS 北大核心 2018年第1期95-100,共6页

基金：

国家自然科学基金(31700384) 河南高等学校重点科研项目(15A180047) betway官方app 博士启动项目(qd14170) betway官方app 青年项目(2016QK13)

关键词：

伏牛山栓皮栎种子扩散覆盖处理

Funiu Mountains Quercus variabilis seed dispersal cover treatment