Modules function characteristics and growth pattern of deyeuxia angustifolia population in the sanji

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Advance in Forestry Research August 2014, Volume 3, Issue 3, PP.14-20

Modules Function Characteristics and Growth1 Pattern of Deyeuxia Angustifolia Population in the Sanjiang Plain of China Xiaoling Fu1, 2 , Fang Ma1 ,#, Hongwei Ni2, Jianbo Wang2 1. Harbin Institute of Technology, Harbin, Heilongjiang, 150001, China 2. Institute of Natural Resources And Ecology HAS. , Harbin, Heilongjiang 150040, China #Email: mafang@hit.edu.cn

Abstract In this paper, a quantitative analysis was conducted on the functional modules’ biomass structure and the relationships between biomass allocation of D.angustifolia population in the typical meadow, marsh meadow, mash.The results showed that the individual growth and modules’ biomass accumulation of D.angustifolia population were closely related to habitat conditions.The mean values of all functional modules’ biomass under different ecological environments exhibited the same regularity:stem modules>leaf modules,and there were some similarities in the whole population of D.angustifolia.The individual and each module’s biomass of the population differed with three habitats,being larger in typical meadow than marsh meadow and mash.The variations of ramet biomass allocation under different habit conditions indicated the important strategies in growth regulation and biomass allocation,i,e. ,more biomass was allocated to the stems preferentially, especially in the typical meadow and marsh meadow, to improve the individual of space and light resource competition.In good condition of water mash ,more biomass was allocated to the leaves preferentially, to ensure the full material product.There was the same regulation of heterogeneous speed growth in the relative weight increase of the leaves,stems and ramets of the population under the three habitat conditions. Keywords: Sanjiangplain of China; Deyeuxia Angustifolia; Population; Module; Biomass Allocation; Heterogeneous Speed Growth

三江平原小叶章种群构件生长规律与功能特征* 付晓玲 1,2,马放 1,倪红伟 2,钟海秀 2,王继丰 2 1. 哈尔滨工业大学,黑龙江 哈尔滨 150001 2. 黑龙江省科学院自然与生态研究所,黑龙江 哈尔滨 150040 摘

要:从构件水平对典型草甸、沼泽化草甸、沼泽 3 个生境的小叶章种群各功能构件的生物量结构及生物量比率之间

的关系进行了定量分析。结果表明,小叶章种群的个体生长和各构件生物量动态与环境条件关系密切。不同环境条件 下,小叶章种群各功能构件生物量平均值具有相同的规律:茎构件>叶构件。3 个生境中小叶章整体种群水平具有一定的 相似性。在地表无积水或湿润的典型草甸中,小叶章种群个体生物量和各构件生物量较沼泽化草甸和沼泽中大。不同生 境下小叶章种群分株生物量的差异蕴涵着重要的生长调节和物质分配策略。3 个生境均表现为优先分配茎器官,尤其是 在地表无积水或湿润的典型草甸以及在不同程度季节性积水的沼泽化草甸中,小叶章种群把较多的物质分配给茎的伸长 生长,以提高个体对空间和光资源的竞争。而在水分条件较好的沼泽中,小叶章种群把较多的物质分配到叶的建造上,

*基金资助:国家自然科学基金:三江平原湿地小叶章群落结构与功能对氮沉降和 CO2 升高的响应*(31170462)。黑龙江省科学 院青年创新基金:三江湿地小叶章种群构件结构和功能对氮沉降和 CO2 升高的响应*(14FA03) - 14 www.ivypub.org/afr


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