Biomass structure and nitrogen, phosphorus nutrient of Calamagrostis angustifolia populations in different communities of Sanjiang Plain, Northeast China

Calamagrostis angustifolia is the dominant species in the typical meadow and marsh meadow communities of Sanjiang Plain. The study on its biomass, the nitrogen (N) and phosphorus (P) contents in its different organs showed that the biomass of different C. angustifolia organs in the two types of wetl...

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Bibliographic Details
Published in:Frontiers of forestry in China 2007-10, Vol.2 (4), p.366-375
Main Authors: Sun, Zhigao, Qin, Shengjin, Liu, Jingshuang, Wang, Jinda
Format: Article
Language:English
Subjects:
Ammonium
Biomass
Dominant species
Forestry
Leaves
Marshes
Meadows
Nitrogen
Nutrients
Organs
Studies
Vagina
Wetlands
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Summary:Calamagrostis angustifolia is the dominant species in the typical meadow and marsh meadow communities of Sanjiang Plain. The study on its biomass, the nitrogen (N) and phosphorus (P) contents in its different organs showed that the biomass of different C. angustifolia organs in the two types of wetland communities was distinctly different, which could be described by polynomial. The biomass of aboveground part and each organ presented single peak changing, with the maximum value of the latter occurred 15 days after. The F/C values were all less than 1, which were bigger in typical meadow than those in marsh meadow. The total N and P contents in different organs of aboveground part all descended monotonically in growth season, with the order of leaf>vagina>stem. The change of total N content in roots of the two types of C. angustifolia was consistent, while that of total P was quite different. The content of total N, ammonium nitrogen (NH^sub 4^^sup +^-N) and nitrate nitrogen (NO^sub 3^^sup -^-N), especially of NH^sub 4^^sup +^-N and NO^sub 3^^sup -^-N, varied widely in different organs, with NH^sub 4^^sup +^-N/NO^sub 3^^sup -^-N>1. Root was the important storage of N and P, but the storage of N and P in stem, leaf and vagina fluctuated greatly. The N/P ratios of the two types of C. angustifolia were all less than 14, which implied that N might be the limiting nutrient of C. angustifolia, and the limitation degree was higher in typical meadow than that in marsh meadow.[PUBLICATION ABSTRACT]
ISSN:1673-3517
1673-3630
DOI:10.1007/s11461-007-0059-3