Data/hora: 17/06/2024 04:24:28

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	14/04/1999	
Data da última atualização: 	14/04/1999	
Autoria: 	HANSON, J. D.; PARTON, W. J.; INNIS, G. S.	
Afiliação: 	USDA Agricultural Research Service, Crops Research Laboratory, Colorado State University, Fort Collins. Natural Resoruce Ecology laboratory, Colorado State University, Fort Collins, USA.	
Título: 	Plant growth and production of grassland ecosystems: a comparison of modelling approaches.	
Ano de publicação: 	1985	
Fonte/Imprenta: 	Ecological Modelling, v.29, n.1/4, p.131-144, 1985.	
Idioma: 	Inglês	
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.	
Palavras-Chave: 	Ecosystem; Growth; Plant; Production.	
Thesagro: 	Crescimento; Ecossistema; Planta; Produção.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (38186-1) - ADD - SP - -- - SP4623 -  - 4623 - DIS