BerningerNikinmaaSievanenEtAl2000

Référence

Berninger, F., Nikinmaa, E., Sievanen, R. and Nygren, P. (2000) Modelling of reserve carbohydrate dynamics, regrowth and nodulation in a N2-fixing tree managed by periodic prunings. Plant, Cell and Environment, 23(10):1025-1040.

Résumé

We used a modified transport resistance approach to model legume tree growth, nodulation and dynamics of reserve carbohydrates after pruning. The model distributes growth between roots and shoots applying the transport resistance approach. Within shoots, growth is divided into leaves, branches and stems applying the pipe model theory. The model also accounts for the metabolic differences of principal N sources, nitrate, ammonium and atmospheric dinitrogen, in a mechanistic way. We compared the simulation results with measured biomass dynamics of Gliricidia sepium (Jacq.) Walp. (Papilionaceae: Robinieae) under humid and subhumid tropical conditions. Comparison showed that the biomass production predicted by the model is close to measured values. Total N2 fixation is also similar to measured values. Qualitatively the model increases the proportion of N2 fixation if roots acquire less mineral N. In the present study, the general form of the model is discussed and compared with similar models. The results encourage the use of this approach for studying biomass dynamics of legume trees under the scheme of periodic prunings. Also, it shows that process-based models have potential in the simulation of trees disturbed by prunings, herbivory or similar factors.

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@ARTICLE { BerningerNikinmaaSievanenEtAl2000,
    AUTHOR = { Berninger, F. and Nikinmaa, E. and Sievanen, R. and Nygren, P. },
    TITLE = { Modelling of reserve carbohydrate dynamics, regrowth and nodulation in a N2-fixing tree managed by periodic prunings },
    JOURNAL = { Plant, Cell and Environment },
    YEAR = { 2000 },
    VOLUME = { 23 },
    PAGES = { 1025-1040 },
    NUMBER = { 10 },
    NOTE = { 01407791 (ISSN) Cited By (since 1996): 5 Export Date: 24 April 2007 Source: Scopus CODEN: PLCED doi: 10.1046/j.1365-3040.2000.00624.x Language of Original Document: English Correspondence Address: Berninger, F.; Department of Forest Ecology; Box 24; University of Helsinki FIN-00014 Helsinki, Finland; email: frank.berninger@helsinki.fi References: Bacanamwo, M., Harper, J.E., The feedback mechanisms of nitrate inhibition of nitrogenase activity may involve asparagine and/or products of its metabolism (1997) Physiologia Plantarum, 100, pp. 371-377; Barnes, P., Fodder production of some shrubs and trees under two harvest intervals in subhumid southern Ghana (1998) Agroforestry Systems, 42, pp. 139-147; Barton, C.V.M., Jarvis, P.G., Growth response of branches of Picea sitchensis to four years exposure to elevated atmospheric carbon dioxide concentration (1999) New Phytologist, 144, pp. 233-243; Berninger, F., Nikinmaa, E., Foliage area - Sapwood area relationships of Scots pine (Pinus sylvestris) trees in different climates (1994) Canadian Journal of Forest Research, 24, pp. 2263-2268; Blair, G., Catchpoole, D., Horne, P., Forage tree legumes: Their management and contribution to the nitrogen economy of wet and humid tropical environments (1990) Advances in Agronomy, 44, pp. 27-54; Brugge, R., Thornley, J.H.M., Shoot-root-nodule partitioning in a vegetative legume - A model (1985) Annals of Botany, 55, pp. 563-671; Claupein, W., Stickstoffdungung und chemischer Pflanzenschutz in einem Dauerfeldversuch und die Ertragsgesetze von Liebig, Liebscher, Wollny und Mitscherlich (1993) Journal of Agronomy and Crop Science, 171, pp. 102-113; Denison, F., Hunt, S., Layzell, D.B., Nitrogenase activity, nodule respiration, and O2 permeability following detopping of alfalfa and birdsfoot trefoil (1992) Plant Physiology, 98, pp. 894-900; Dewar, R.C., Medlyn, B.E., McMutrie, R.E., A mechanistic analysis of light and carbon use efficiencies (1998) Plant, Cell and Environment, 21, pp. 573-588; Erdmann, T.K., Nair, P.K.R., Kang, B.T., Effects of cutting frequency and cutting height on reserve carbohydrates in Gliricidia sepium (Jacq.) 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    ABSTRACT = { We used a modified transport resistance approach to model legume tree growth, nodulation and dynamics of reserve carbohydrates after pruning. The model distributes growth between roots and shoots applying the transport resistance approach. Within shoots, growth is divided into leaves, branches and stems applying the pipe model theory. The model also accounts for the metabolic differences of principal N sources, nitrate, ammonium and atmospheric dinitrogen, in a mechanistic way. We compared the simulation results with measured biomass dynamics of Gliricidia sepium (Jacq.) Walp. (Papilionaceae: Robinieae) under humid and subhumid tropical conditions. Comparison showed that the biomass production predicted by the model is close to measured values. Total N2 fixation is also similar to measured values. Qualitatively the model increases the proportion of N2 fixation if roots acquire less mineral N. In the present study, the general form of the model is discussed and compared with similar models. The results encourage the use of this approach for studying biomass dynamics of legume trees under the scheme of periodic prunings. Also, it shows that process-based models have potential in the simulation of trees disturbed by prunings, herbivory or similar factors. },
    KEYWORDS = { Agroforestry Gliricidia sepium Legume trees Nitrogen supply Non-structural carbohydrates Transport resistance model carbohydrate growth modeling legume nodulation nutrient dynamics pruning regrowth Gliricidia sepium },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.04 },
}

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