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白刺幼苗生物量与氮含量在叶与全株间的尺度转换

邢磊 薛海霞 李清河 高婷婷

邢磊, 薛海霞, 李清河, 高婷婷. 白刺幼苗生物量与氮含量在叶与全株间的尺度转换[J]. 北京林业大学学报, 2018, 40(2): 76-81. doi: 10.13332/j.1000-1522.20170338
引用本文: 邢磊, 薛海霞, 李清河, 高婷婷. 白刺幼苗生物量与氮含量在叶与全株间的尺度转换[J]. 北京林业大学学报, 2018, 40(2): 76-81. doi: 10.13332/j.1000-1522.20170338
Xing Lei, Xue Hai-xia, Li Qing-he, Gao Ting-ting. Scaling from leaf to whole plant in biomass and nitrogen content of Nitraria tangutorum seedlings[J]. Journal of Beijing Forestry University, 2018, 40(2): 76-81. doi: 10.13332/j.1000-1522.20170338
Citation: Xing Lei, Xue Hai-xia, Li Qing-he, Gao Ting-ting. Scaling from leaf to whole plant in biomass and nitrogen content of Nitraria tangutorum seedlings[J]. Journal of Beijing Forestry University, 2018, 40(2): 76-81. doi: 10.13332/j.1000-1522.20170338

白刺幼苗生物量与氮含量在叶与全株间的尺度转换

doi: 10.13332/j.1000-1522.20170338
基金项目: 

国家自然科学基金项目 31470622

详细信息
    作者简介:

    邢磊。主要研究方向:植物逆境生理生态。Email: 1762561840@qq.com 地址:100091北京市海淀区香山路东小府1号中国林业科学研究院林业研究所

    责任作者:

    李清河,研究员,博士生导师。主要研究方向:植物逆境生理生态、植物生殖生态等。Email:tsinghel@caf.ac.cn 地址:同上

  • 中图分类号: Q948.1;S793;S718.55+6

Scaling from leaf to whole plant in biomass and nitrogen content of Nitraria tangutorum seedlings

  • 摘要: 目的 植物生物量和营养的分配模式是植物对生态系统中物质和能量循环的一种演变策略,其资源分配给不同构件的模式是其生物学特性的一个基本方面。本文目的为解决野外调查工作中植物整体生物量与养分含量难以测定等问题。 方法以乌兰布和沙漠东北部唐古特白刺幼苗为研究对象,将其分为根、茎、叶3个主要组成部分,通过对这3个主要组成构件生物量的测定与拟合分析,以叶器官为变量,建立了白刺全株生物量的预测模型,并通过进一步测定其各部位氮含量,建立了其全株氮含量的预测模型,得出了白刺叶与全株不同尺度之间生物量与氮含量的缩放关系,探讨了白刺全株生物量与全株氮含量之间的相关关系。结果结果表明:以叶生物量对数转换值为自变量能够很好的拟合出根(R2=0.901 2,P < 0.001)和茎(R2=0.926 4,P < 0.001)的生物量;以叶氮含量为自变量也能够较好的拟合出根(R2=0.850 1,P < 0.001)和茎(R2=0.844 7,P < 0.001)的氮含量,进而得出以叶器官生物量为自变量的全株生物量预测模型:Mp=ML+100.020 9 ML0.845 6+100.436 9 ML0.867 8,以及以叶器官生物量与氮含量为自变量的全株氮含量预测模型:Np=MLNL+100.020 9ML0.845 6(0.109 4NL+0.015 6)+100.436 9ML0.867 8(0.108 8NL+0.014 8),并经实测数据验证,白刺全株生物量与全株氮含量之间的相关关系可表达为:lgNp=1.075 2lgMp- 1.768 4。结论白刺通过某一构件的生物量与氮含量能够较好的预测出其全株生物量与全株氮含量之间的相关关系。

     

  • 图  1  白刺根、茎生物量与叶片生物量的异速生长关系

    Figure  1.  Allometry relationship between root, stem biomass and leaf biomass of Nitraria tangutorum

    图  2  白刺全株生物量与叶片生物量间的模拟曲线与验证曲线

    Figure  2.  Simulating and verifying curves between whole plant biomass and leaf biomass of Nitraria tangutorum

    图  3  白刺根、茎氮含量与叶氮含量间的线性拟合关系

    Figure  3.  Linear fitting relations between N concent of root, stem and that of leaf for Nitraria tangutorum

    图  4  白刺全株氮含量与全株生物量间的模拟曲线与验证曲线

    Figure  4.  Simulating and verifying curves between whole plant N content and whole plant biomass of Nitraria tangutorum

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出版历程
  • 收稿日期:  2017-10-13
  • 修回日期:  2017-12-29
  • 刊出日期:  2018-02-01

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