长白山泥炭沼泽桧叶金发藓种群的年龄结构与生长分析

应用生态学报 ›› 2005, Vol. 16 ›› Issue (1): 44-48.

长白山泥炭沼泽桧叶金发藓种群的年龄结构与生长分析

卜兆君, 杨允菲, 代丹, 王宪伟

东北师范大学草地研究所, 植被生态科学教育部重点实验室, 泥炭沼泽研究所, 湿地保护与植被恢复国家环保总局重点实验室, 长春, 130024

收稿日期:2004-04-21 修回日期:2004-08-04 出版日期:2005-01-15 发布日期:2005-01-15
通讯作者: 杨允菲
基金资助:
国家自然科学基金项目(39770536)、国家自然科学基金重点项目(50139020)、教育部重点项目(02081)和东北师范大学基金资助项目(111373).

Age structure and growth pattern of Polytrichum juniperum populations in a mire of Changbai Mountains

BU Zhaojun, YANG Yunfei, DAI Dan, WANG Xianwei

Key Laboratory for Vegetation Ecology of Ministry of Education/Key Laboratory for Wetland Conservation and Vegetation Restoration of State Environmental Protection Ministry, Institute of Grassland Sciences/ Institute of Peat and Mire, Northeast Normal University, Changchun 130024, China

Received:2004-04-21 Revised:2004-08-04 Online:2005-01-15 Published:2005-01-15

摘要/Abstract

摘要： 在长白山哈尼泥炭沼泽,应用"固有年际标记",对有孢子体和无孢子体生产的桧叶金发藓种群进行了年龄结构与生长分析.结果表明,在两种群中,分株均由6个龄级组成,分株数量和生物量年龄结构均呈衰退型,有孢子体生产的种群尤为明显.总体分株生物量无显著差异(P＞0.05),各龄分株干物质积累量均随龄级增加呈相似线性增长规律.总体分株平均高度相差6.17%(P＜0.05),孢子体生产限制了分株高度的生长.各龄分株的平均高度均随龄级增加而呈相似线性增长规律.无孢子体生产的种群内,分株高度的变异程度仅为2.44%,体现了高度一致性对营养株存活的意义.有孢子体生产的种群内,分株高度变异系数为25.07%,分株生物量变异系数仅为8.25%,反映干物质积累量的一致性对种群实现有性繁殖的意义.两种群分株生物量与高度间呈极显著线性正相关(P＜0.001),未表现出异速生长规律.

关键词: 桧叶金发藓, 泥炭沼泽, 无性系, 固有年际标记, 年龄结构

Abstract: In this paper, the age structure and growth pattern of two Polytrichum juniperum populations with and without sporophytes in Hani mire of Changbai Mountains were studied by ‘innate annual marker' method. The ramets of both populations were composed of 6 age classes, and their quantity and biomass showed a declining age structure, which was more obvious in the sporophyte produced population. No significant difference of biomass was found (P>0.05) between the two populations. The dry material accumulation of the ramets in both populations increased with aging, and showed similar patterns of linear function. The ramets mean height of sporophyte-produced population was 6.17% shorter (P<0.05) than the another, because sporophyte production limited the height growth. The ramets mean height also increased with aging, and showed similar patterns of linear function. In non-sporophyte produced population, the variation coefficient of ramets height was only 2.44%, which indicated the significance of similar height for ramets survival. In sporophyte produced population, the variation coefficient of ramets height was 25.07%, while that of ramets biomass was 8.25%, suggesting the significance of similar biomass to the reproduction of population. The biomass of ramets had a significantly positive correlation with height in both populations(P<0.001), and no allometric growth was showed.

Key words: Polytrichum juniperum, Mire, Clone, Innate annual marker, Age structure

中图分类号:

Q945.3
Q948

卜兆君, 杨允菲, 代丹, 王宪伟. 长白山泥炭沼泽桧叶金发藓种群的年龄结构与生长分析[J]. 应用生态学报, 2005, 16(1): 44-48.

BU Zhaojun, YANG Yunfei, DAI Dan, WANG Xianwei . Age structure and growth pattern of Polytrichum juniperum populations in a mire of Changbai Mountains [J]. Chinese Journal of Applied Ecology, 2005, 16(1): 44-48.

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