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生态学杂志 ›› 2021, Vol. 40 ›› Issue (4): 940-949.doi: 10.13292/j.1000-4890.202104.001

• 研究报告 • 上一篇    下一篇

扎龙湿地不同生长期芦苇分株构件生物量分配及生长分析

焦德志1*,刘润泽1,潘林1,王素玲1,杨允菲2     

  1. 1齐齐哈尔大学生命科学与农林学院, 抗性基因工程与寒地生物多样性保护黑龙江省重点实验室, 黑龙江齐齐哈尔 161006; 2东北师范大学草地科学研究所, 植被生态科学教育部重点实验室, 长春 130024)
  • 出版日期:2021-04-10 发布日期:2021-04-07

Biomass allocation and growth analysis of the ramets of Phragmites communis in different growth stages in Zhalong wetland.

JIAO De-zhi1*, LIU Run-ze1, PAN Lin1, WANG Su-ling1, YANG Yun-fei2#br#   

  1. (1Key Laboratory of Resistance Gene Engineering and Preservation of Biodiversity in Cold Areas in Heilongjiang Province, College of Life Science and Agriculture, Forestry, Qiqihar University, Qiqihar 161006, Heilongjiang, China; 2Key Laboratory of Vegetation of Education Ministry, Institute of Grassland Science, Northeast Normal University, Changchun 130024, China).
  • Online:2021-04-10 Published:2021-04-07

摘要: 生物量及其分配规律直接影响着植物的生长和繁殖,也反映了植物的生态适应策略。采用大样本抽样方法,比较扎龙湿地不同生境2个生长期芦苇分株生物量的分配规律。结果表明:2个生长期中,不同生境芦苇的株高、叶重、叶鞘重、茎重和株重等数量特征均表现出一定的差异,芦苇分株和构件的生长均具有较大的可塑性;芦苇分株和构件生物量的平均分配比例在31.72%~35.29%和12.77%~67.51%,其中,6月各构件间差异均不显著(P<0.05),8月各构件间差异均显著(P<0.05),且均以茎为最大,其次为叶片,叶鞘最小;芦苇分株重和不同构件重与株高之间以及不同构件重与株重之间均表现为幂函数形式的异速生长关系,在芦苇分株增重的过程中,2个生长期叶片、叶鞘和茎的贡献率为29.8%~46.6%、14.9%~31.5%和20.6%~55.2%;不同生长期和不同生境芦苇分株生物量分配策略存在差异,但光合构件和支持构件间具有稳定的协同生长关系,分株及构件间的相对生长受遗传因素和环境因子的双重控制。

关键词: 芦苇种群, 分株, 构件, 生物量, 异速生长

Abstract: Biomass and its allocation, as ecological adaptation strategy of plants, affect plant growth and reproduction. By using large sample method, we analyzed the biomass allocation of ramets of Phragmites australis in two growth stages at different habitats of Zhalong wetland. The results showed that the ramet height, leaf weight, leaf sheath weight, stem weight and ramet weight of P. australis at different habitats were different in the two growth stages, and that the growth of the ramets and modules of P. australis showed great plasticity. The ranges of average proportion of biomass allocation of ramet modules in P. australis were 31.72%-35.29% and between 12.77%-67.51% respectively. There was no significant difference among modules in June (P>0.05), but significant difference among modules in August (P<0.05), with stem being the largest, leaf the second, and leaf sheath the smallest. There was an allometric growth relationship by power function between remat height and ramet weight and the weight of different modules, and also between the weight of different modules and ramet weight. With the increases of ramet weight, the contribution rates of leaves, leaf sheaths and stems were 29.8%-46.6%, 14.9%-31.5% and 20.6%-55.2%, respectively. Our results suggested that the strategies of biomass allocation of ramet in different growth periods and habitats were different, and that there was a stable cooperative growth relationship between the photosynthetic module and the supporting module of the ramet. Moreover, the relative growth between ramet and module was controlled by both genetic and environmental factors.

Key words: Phragmites australis population, ramet, module, biomass, allometry.