鼠类及种子特征对水青冈种子命运的影响

刘映良; 薛建辉

doi:10.3969/j.jssn.1000-2006.2010.05.003

鼠类及种子特征对水青冈种子命运的影响

刘映良，薛建辉

南京林业大学学报（自然科学版） ›› 2010, Vol. 34 ›› Issue (05) : 12-16.

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南京林业大学学报（自然科学版） ›› 2010, Vol. 34 ›› Issue (05) : 12-16. DOI: 10.3969/j.jssn.1000-2006.2010.05.003

研究论文

鼠类及种子特征对水青冈种子命运的影响

刘映良¹，薛建辉²

作者信息 +

The effects of rodents and seed traits on the fate of seeds of Fagus longipetiolata

LIU Yingliang¹, XUE Jianhui²

Author information +

文章历史 +

摘要

水青冈是我国亚热带东部常绿阔叶林中的优势树种之一，其成熟林内尽管每年有大量种子散落，但实生苗极少，种群天然更新主要依赖于萌蘖。为了揭示不同微生境下不同特征水青冈种子的命运格局，采用实验生态学方法，研究鼠类捕食及不同种子特征对水青冈种子命运的影响。结果表明：研究区鼠类主要有针毛鼠、社鼠和黄胸鼠；鼠类转运和就地消耗是影响水青冈种子命运的主要因素；鼠类在微生境中的捕食对不同特征种子均有极显著差异影响(p<0.01)，而就地消耗的影响不明显。不同特征水青冈种子被鼠类全部捕食所需的平均天数，虫蛀种子为3.05 d、带壳斗种子2.70 d、小粒种子2.62 d、大粒种子2.15 d。微生境与种子特征交互作用对水青冈种子的被食和就地消耗均没有显著影响。

Abstract

Fagus longipetiolata is one of dominant species in subtropical evergreen broadleaved forests of east China. There are few seedlings from seeds of F.longipetiolata in mature F.longipetiolata forests. The natural population regeneration of F.longipetiolata depends on basal sprouting, although a large number of seeds drop every year. Adopted method of experimental ecology, the effects of rodents predation and different seed traits on the fate of seeds of F.longipetiolata were studied in order to reveal the fate of different characteristic seeds of F.longipetiolata in different microhabitats. The main results were as follows: Rattus fulvescens, Niviventer confucianus and Rattus flavipectu are key animal species acting on seeds of F.longipetiolata in the study area. Removal and consumption in situ by rodents was the most important factor affecting the fate of seeds F.longipetiolata. The seed characteristics significantly related to rodents predation under different microenvironment (p<0.01), but no significant difference was observed for consumption in situ by rodents. The mean time of different characteristic seeds of F.longipetiolata consumption in situ by rodents was that insectdam seeds was 3.05d, hulled seeds was 2.70 d, small seeds was 2.62 d and big seeds was 2.15 d. The 2way interactions between microhabitats and seed traits had no effect on predation and consumption in situ of F.longipetiolata seeds.

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刘映良，薛建辉. 鼠类及种子特征对水青冈种子命运的影响[J]. 南京林业大学学报（自然科学版）. 2010, 34(05): 12-16 https://doi.org/10.3969/j.jssn.1000-2006.2010.05.003

LIU Yingliang, XUE Jianhui. The effects of rodents and seed traits on the fate of seeds of Fagus longipetiolata[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2010, 34(05): 12-16 https://doi.org/10.3969/j.jssn.1000-2006.2010.05.003

中图分类号： S718

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基金

收稿日期：2010-06-13修回日期：2010-07-20基金项目：“十一五”国家科技支撑计划(2006BAD03A0303)作者简介：刘映良(1975—)，副教授，博士。Email: Liuyl-23@126.com。引文格式：刘映良,薛建辉. 鼠类及种子特征对水青冈种子命运的影响[J]. 南京林业大学学报:自然科学版,2010,34(5):12-16.