文档介绍：
东北退化草地恢复演替系列两种无性系植
物种群互动格局#
杨允菲,李海燕,孟令宇*
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(东北师范大学草地科学研究所,植被生态学教育部重点实验室,长春 130024)
摘要:群落演替及优势种的替代是一种有序的过程。采用以空间代替时间,对不同混生比例
构成的地段连续取样测定方法,统计分析了东北退化草地恢复系列两种无性系植物全叶马兰
和羊草种群的相互消长。结果表明:在演替中羊草种群具有以根茎繁殖和生长季初期冬性分
株生长优势而最终取胜的生物学特性;两个混生种群均具有调节个体大小来保证种群数量相
对稳定的生存与发展策略;种群的波动性以全叶马兰大于羊草,种群的稳定性则羊草大于全
叶马兰;从生长季中期到末期,全叶马兰种群的密度/生物量随着羊草种群密度/生物量的增
加呈直线下降,在生长季后期和末期,全叶马兰种群的密度和主根生物量均随着羊草种群根
茎生物量和累积长度的增加呈对数函数下降;羊草种群根茎向全叶马兰群落以指数形式扩
张;全叶马兰优势种群被羊草种群替代后,将长期维持其在群落的伴生种地位。
关键词:植物生态学;羊草;全叶马兰; 无性系植物; 互动种群;演替系列
中图分类号:Q948
Interaction patterns on populations of two clonal plants in
restoring ession series in Northeast degraded meadow,
China
YANG Yunfei, LI Haiyan, MENG Lingyu
(Key Laboratory of Vegetation Ecology, Ministry of Education, Institute of Grassland Science,
Northeast Normal University, Changchun 130024)
Abstract: It is an orderly process on replacement between dominant species in munity
ession. Based on space instead of time, continuous sampled and measured method in different
mixed ratio munity sections, the mutual changes on populations of two clonal plants,
Leymus chinensis and Kalimeris integrifolia were analyzed in restoration ession series in
Northeast degraded meadow, China. The results showed that there are the biological
characteristics of eventually win such as rhizome reproduction and growth advantage of winter
ramets in the early