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植物研究 ›› 2012, Vol. 32 ›› Issue (4): 425-429.doi: 10.7525/j.issn.1673-5102.2012.04.009

• 论文 • 上一篇    下一篇

不同功能型植物叶氮含量与光合特性的关系研究

苗艳明;吕金枝;毕润成*   

  1. 山西师范大学生命科学学院,临汾;041004
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-07-20 发布日期:2012-07-20
  • 通讯作者: 毕润成
  • 基金资助:
     

Relationships between Leaf Nitrogen Content and Photosynthetic Characteristics in Different Plant Functional Types

MIAO Yan-Ming;LV Jin-Zhi;BI Run-Cheng*   

  1. School of Life Science,Shanxi Normal University,Linfen 041004
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-07-20 Published:2012-07-20
  • Contact: BI Run-Cheng
  • Supported by:
     

摘要: 在山西南部的霍山七里峪林场,确定乔木、灌木和草本物种共26个,用Li-3000A叶面积测定仪测量了叶面积的大小、用Li-6400便携式光合作用测定系统测定了叶光饱和速率(Aarea),计算了比叶重(LMA)、单位重量的光饱和光合速率(Amass)、单位面积叶氮含量(Narea)、单位重量叶氮含量(Nmass)及光合氮利用效率(PNUE),研究了它们之间的不同和相互作用关系。结果表明:不同功能型植物的NmassAareaAmassNareaPNUE差异显著(p<0.05),植物叶片氮含量与植物光合生理特性具有显著相关关系,NmassAareaAmassPNUE呈线性显著的正相关(p<0.05);NareaAareaAmassPNUE之间呈极显著的负相关(p<0.01)。

关键词: In Huoshan Mountain, sampling plots were set up at Qiliyu Farm for field investigation, trees, shrubs and grasses in 26 species were identified. The leaf area was measured with Li-3000A Leaf Area Meter, and the saturated photosynthetic rate (Aarea) was determined with Li-6400 portable photosynthesis system. The leaf mass per area (LMA), The net photosynthesis based on mass (Amass), leaf nitrogen content per unit area (Narea), leaf nitrogen content per unit mass (Nmass) and photosynthetic nitrogen use efficiency (PNUE) were quantified, the differences and interactions among three plant functional types (PFTs) were studied. The results showed that there were significant differences (p<, 0.05) in Nmass, Aarea, Amass, Narea and PNUE of three PFTs. The photosynthetic characteristics were significantly correlated with leaf nitrogen content, Nmass was significantly correlated with Aarea (p<, 0.05), Amass and PNUE, while Narea was significantly positively correlated with Aarea, Amass and PNUE (p<, 0.01).

Abstract: 功能型;叶氮含量;光饱和光合速率;光合氮利用效率

Key words: plant functional type, leaf nitrogen content, saturated photosynthetic rate, photosynthetic nitrogen use efficiency

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