Predicting the response of plants to increasing carbon dioxide: A critique of plant growth models

Reynolds, James F.; Acock, B.

doi:10.1016/0304-3800(85)90049-3

Cited by 82 publications

(31 citation statements)

References 52 publications

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“…It will also contribute to estimates of R~oi~. The use of growth models to predict plant responses to elevated CO 2 has been reviewed by, e.g., Reynolds and Acock (1985), Agren et al (1991), andMcMurtrie et al (1992). Much remains to be learned before mechanistic predictions of plant growth under any CO 2 environment will be possible.…”

Section: From Canopy To Whole Plant and Communitymentioning

confidence: 99%

Scaling CO2-photosynthesis relationships from the leaf to the canopy

1994

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Responses of individual leaves to short-term changes in CO2 partial pressure have been relatively well studied. Whole-plant and plant community responses to elevated CO2 are less well understood and scaling up from leaves to canopies will be complicated if feedbacks at the small scale differ from feedbacks at the large scale. Mathematical models of leaf, canopy, and ecosystem processes are important tools in the study of effects on plants and ecosystems of global environmental change, and in particular increasing atmospheric CO2, and might be used to scale from leaves to canopies. Models are also important in assessing effects of the biosphere on the atmosphere. Presently, multilayer and big leaf models of canopy photosynthesis and energy exchange exist. Big leaf models - which are advocated here as being applicable to the evaluation of impacts of 'global change' on the biosphere - simplify much of the underlying leaf-level physics, physiology, and biochemistry, yet can retain the important features of plant-environment interactions with respect to leaf CO2 exchange processes and are able to make useful, quantitative predictions of canopy and community responses to environmental change. The basis of some big leaf models of photosynthesis, including a new model described herein, is that photosynthetic capacity and activity are scaled vertically within a canopy (by plants themselves) to match approximately the vertical profile of PPFD. The new big leaf model combines physically based models of leaf and canopy level transport processes with a biochemically based model of CO2 assimilation. Predictions made by the model are consistent with canopy CO2 exchange measurements, although a need exists for further testing of this and other canopy physiology models with independent measurements of canopy mass and energy exchange at the time scale of 1 h or less.

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Section: From Canopy To Whole Plant and Communitymentioning

confidence: 99%

Scaling CO2-photosynthesis relationships from the leaf to the canopy

1994

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“…These advances trigger new subjects for the researcher as well as for the administrator of resources. Reynolds & Acock (1985) verified that the existent models have been used to obtain answers on subjects for which they were not developed, like seeking answers to the cause of variations in atmospheric carbon dioxide concentrations for example.…”

Section: The Ideal Applied Modelmentioning

confidence: 93%

Principles of crop modelling and simulation: II. the implications of the objective in model development

Neto

Teruel

Reichardt

et al. 1998

Sci. agric. (Piracicaba, Braz.)

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“…Though there is a plethora of models ranging from those for annual crops to long-lived trees with varying model characteristics, they all remarkably have an overall similarity in structure [9] . This prompted crop growth modelers across the globe to mobilize their resources with the aim of developing models using a modular modeling approach and a common computer programming language FORTRAN [10] .…”

Section: Introductionmentioning

confidence: 99%

A Simulation Model Estimates of the Intercropping Advantage of an Immature-Rubber, Banana and Pineapple System

Jall¹

2009

American J. of Agricultural and Biological Sciences

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Problem statement:Intercropping has been shown to have many advantages but it is fallacious to conclude it is always a better cropping system. Little is known about a new doublehedgerow intercropping of rubber, banana and pineapple in relation to its effects on growth and yield of the component crops when compared to their monocrops. Simulation modeling offers a cheaper and faster alternative to explore cropping scenarios and estimate their productivity under a wide range of management and environmental conditions. This simulation study was therefore undertaken to evaluate the growth and yield of immature rubber, banana and pineapple intercrop and monocrop scenarios with the aid of an intercrop simulation model named SURHIS, as well as estimating the intercropping advantage. Approach: A FORTRAN computer model (SURHIS) that simulated the daily light interception and utilization by immature-rubber, banana and pineapple intercropping system was used to simulate intercrop and monocrop scenarios to estimate potential Dry Matter Yield (DMY) for all crops as well as fruit yields for banana and pineapple. The results of the model were tested for accuracy by comparing actual field experimental results with the aid of Mean Deviation (MD) and Mean Absolute Error (MAE) statistical analyses. Intercropping advantage was assessed using the Land Equivalent Ratio (LER) analysis. Results: The model was representative or predicted DMY of the crops with sufficient accuracy. The LER analysis showed that the intercropping system had a dry matter yield productivity advantage of 81% more than monocrops of the component crops. The results also showed that the higher the Plant Population Density (PPD), the greater is the dry matter yield. It was also shown that banana and pineapple had no deleterious effect on the growth of rubber. Fruit weight per plant of banana and pineapple was reduced with increase in PPD for the monocrops. Measured average fresh fruit bunch weight for banana was 18 kg plant −1 and the average fresh fruit weight per plant for pineapple was 2.1 kg for the intercropping system. Conclusion: Intercropping of banana and pineapple with immature-rubber is more productive than the component crops grown as monocrops in their respective optimum plant population densities per hectare. The model can be useful for predicting potential productivity, with sufficient accuracy, of the afore-mentioned intercropping system under varying plant density and environment scenarios as well as acting as a guide for plant density experimentation.

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Predicting the response of plants to increasing carbon dioxide: A critique of plant growth models

Cited by 82 publications

References 52 publications

Scaling CO2-photosynthesis relationships from the leaf to the canopy

Scaling CO2-photosynthesis relationships from the leaf to the canopy

Principles of crop modelling and simulation: II. the implications of the objective in model development

A Simulation Model Estimates of the Intercropping Advantage of an Immature-Rubber, Banana and Pineapple System

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