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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
14/04/1999 |
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Data da última atualização: |
14/04/1999 |
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Autoria: |
HANSON, J. D.; PARTON, W. J.; INNIS, G. S. |
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Afiliação: |
USDA Agricultural Research Service, Crops Research Laboratory, Colorado State University, Fort Collins. Natural Resoruce Ecology laboratory, Colorado State University, Fort Collins, USA. |
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Título: |
Plant growth and production of grassland ecosystems: a comparison of modelling approaches. |
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Ano de publicação: |
1985 |
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Fonte/Imprenta: |
Ecological Modelling, v.29, n.1/4, p.131-144, 1985. |
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Idioma: |
Inglês |
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Conteúdo: |
Nine plant growth models for grassland ecosystems were examined. Model objectives, complexity and inclusiveness were compared. A large degree of diversity in model complexity and strucuture exists in grassland models. The models examined during this comparison consisted primarily of linear and nonlinear difference/differential equations. Though grassland models use may of the same concepts of other plant growth models, grassland models tend to be more concerned with moisture and nutrient status then their cropland counter parts. The system level models require large amounts of data to use yet these data are often unavailable and parameters are hard to establish. These models seem best suited to merely approximate system behavior, but will become extremely useful as more understanding of the grassland ecosystem is gained. Grassland models which combine plant growth with animal grazing tend to include spatial heterogeneity of vegetation, thereby allowing these models to sumulate multiple landscape points and patchy grazing by herbivores. |
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Palavras-Chave: |
Ecosystem; Growth; Plant; Production. |
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Thesagro: |
Crescimento; Ecossistema; Planta; Produção. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01679naa a2200241 a 4500
001 1795219
005 1999-04-14
008 1985 bl --- 0-- u #d
100 1 $aHANSON, J. D.
245 $aPlant growth and production of grassland ecosystems$ba comparison of modelling approaches.
260 $c1985
520 $aNine plant growth models for grassland ecosystems were examined. Model objectives, complexity and inclusiveness were compared. A large degree of diversity in model complexity and strucuture exists in grassland models. The models examined during this comparison consisted primarily of linear and nonlinear difference/differential equations. Though grassland models use may of the same concepts of other plant growth models, grassland models tend to be more concerned with moisture and nutrient status then their cropland counter parts. The system level models require large amounts of data to use yet these data are often unavailable and parameters are hard to establish. These models seem best suited to merely approximate system behavior, but will become extremely useful as more understanding of the grassland ecosystem is gained. Grassland models which combine plant growth with animal grazing tend to include spatial heterogeneity of vegetation, thereby allowing these models to sumulate multiple landscape points and patchy grazing by herbivores.
650 $aCrescimento
650 $aEcossistema
650 $aPlanta
650 $aProdução
653 $aEcosystem
653 $aGrowth
653 $aPlant
653 $aProduction
700 1 $aPARTON, W. J.
700 1 $aINNIS, G. S.
773 $tEcological Modelling$gv.29, n.1/4, p.131-144, 1985.
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Embrapa Pantanal (CPAP) |
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| 1. |  | PALM, C. A.; NOORDWIJK, M. van; WOOMER, P. L.; ALEGRE, J. C.; ARÉVALO, L.; CASTILLA, C. E.; CORDEIRO, D. G.; HAIRIAH, K.; KOTTO-SAME, J.; MOUKAM, A.; PARTON, W. J.; RICSE, A.; RODRIGUES, V. G. S.; SITOMPU, S. M. Carbon losses and sequestration with land use change in the humid tropics. In: PALM, C. A.; VOSTI, S. A.; SANCHEZ, P. A.; ERICKSEN, P. J. (ed.). Slash-and-burn agriculture: the search for alternatives. New York: Columbia University Press, 2005. cap. 2, p. 41-63.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Acre. |
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