欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志 ›› 2004, Vol. ›› Issue (1): 107-110.

• 研究简报 • 上一篇    下一篇

啮齿动物和鸟类对东灵山地区辽东栎种子丢失的影响

马杰, 李庆芬, 孙儒泳, 刘定震   

  1. 北京师范大学生态学研究所, 生物多样性与生态工程教育部重点实验室, 北京, 100875
  • 收稿日期:2003-04-09 修回日期:2003-06-26 出版日期:2004-02-10
  • 通讯作者: 刘定震
  • 基金资助:
    国家自然科学基金重大资助项目(39893360)

Influence on seed bank of Quercus liaotungensis by birds and rodents in Dongling Mountain

MA Jie, LI Qingfen, SUN Ruyong, LIU Dingzhen   

  1. Key Laboratory for Biodiversity Science and Ecological Engineering, Ministry of Education & Institute of Ecology, Beijing Normal University, Beijing 100875, China
  • Received:2003-04-09 Revised:2003-06-26 Online:2004-02-10

摘要: 2000年8月中旬至10月上旬,在北京东灵山地区小龙门林场选取两块辽东栎分布近似而坡向不同的样地,并对样地内种子库与啮齿动物的种群数量变化进行了调查。结果表明,两块样地种子雨持续40天左右,且种子下落趋势基本一致,高峰期都集中在9月中旬,不同坡向的种子产量差异显著。在两样地随机各设置24个种子方形收集器(0.5m2)和20个地表样方(1.0×0.5m2)调查种子产量。通过比较收集器内壳斗和种子数量,发现二者无显著差异,说明鸟类对林冠层种子丢失作用不明显;而收集器和地表样方种子数量差异显著,表明辽东栎种子库扩散主要由林中啮齿动物完成。标记重捕发现辽东栎林中啮齿动物群落包括大林姬鼠,社鼠,棕背鼠平和花鼠,其中大林姬鼠为优势种,占群落的77.2%。

关键词: 刺槐, 水分生理生态, 立地, 黄土高原

Abstract: Two plots with different slopes were selected for seed rain test in Liaotong oak (Quercus liaotungensis) forest in Dongling Mountain region of Beijing. The characteristics of seed bank and the population of rodents in the two plots were conducted from mid-Aogust. to the beginning of October. 2000. Results showed that the seed rain of Liaodong oaks continued about 40 days. The characteristics of the seed rain in two plots paralleled well and most seeds fell in mid-September, but the seed productivity were different in the two plots. Twenty-four traps above ground and twenty small plots on ground (about 0.5 m2) were randomly located in each plot. Significant difference in the seed crop size was found between traps in the air and on the ground in the two plots, yet no significant difference was found in the number of cups and acorns inside the traps. Our results indicated that birds showed little impact on the seed bank of oak in this area, but rodents showed a heavy impact on the seed bank. Four species of rodents, Apodemus peninsulae, Niviventer confucianus,Clethrionomys rufocanus and Eutamias sibiricus might contribute to the ground seed dispersal. The dominant species Apodemus peninsulae which accounts for 77.2% of the community might have the most important impact on seed dispersal.

Key words: Robinia pseudoacacia, Water physiological ecology, Habitat, Loess Plateau

中图分类号: