摘要
三江平原芦苇湿地在5～10月的生长季节中,种群不同构件生物量季节动态变化存在明显差异.研究结果表明:叶鞘和叶的生物量最大值分别出现在6月、7月;而茎秆生物量和芦苇种群地上部生物量最大值则出现在8月;地下部根状茎的生物量变化与上述截然相反,最大值出现在生长季节始、末期,7月生物量最小;不定根生物量在8月达到最大值;同化器官和非同化器官生物量的比值具有明显的季节动态变化.相关分析表明,芦苇种群地上部生物量和地下部生物量呈负相关关系.
The seasonal dynamics of different components biomass in Phragmites australis population differed greatly in the growth period.The results were as follows: The biomass maximum of leaf sheath and leaf appeared in June and July separately.Both biomass maximum of stalk and all of components aboveground appeared in Aug.The biomass increase of its rhizome was different completely,its maximum appeared at the beginning and end of growth season and its minimum was in July.The biomass maximum of adventitious root appeared in Aug..The biomass ratio of assimilative and non-assimilative organs changed seasonally.By means of correlation analysis,the biomass aboveground and underground was of negative correlation,the negative correlation coefficient was 0.75839.
出处
《中国草地学报》
CSCD
2006年第4期1-5,共5页
Chinese Journal of Grassland
基金
国家科技公关项目(201BA508B24)
关键词
三江平原
芦苇
种群
生产
分配
Sanjiang plain
Phragmites australis
Population
Production
Allocation
作者简介
张友民(1963-),男,副教授,在读博士后,1985年毕业于东北师范大学生物系,主要从事植物学与湿地植物生态学研究,已发表论文20余篇.
