The influence of aerosols on crop production: A study using the CERES crop model

Greenwald, Roby; Bergin, Michael; Xu, Jin; Cohan, Daniel S.; Hoogenboom, Gerrit

doi:10.1016/j.agsy.2005.10.004

Cited by 94 publications

(75 citation statements)

References 31 publications

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“…Deeper diffuse light penetration along canopy depth has been suggested as the primary mechanism underlying the corresponding increases of canopy-level LUE (Urban et al, 2007;Li et al, 2014). This mechanism is further supported by observations of increasing LUE with higher leaf area index (LAI; Greenwald et al, 2006;Alton et al, 2007), which varies with genotype/species differences in leaf morphology, orientation, and distribution. Whether increases in LUE under diffuse light result in higher primary productivity, however, is unclear, as lower total surface irradiance tends to accompany diffuse light conditions (Kanniah et al, 2012).…”

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confidence: 53%

Excess Diffuse Light Absorption in Upper Mesophyll Limits CO₂ Drawdown and Depresses Photosynthesis

et al. 2017

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mentioning

confidence: 53%

Excess Diffuse Light Absorption in Upper Mesophyll Limits CO₂ Drawdown and Depresses Photosynthesis

et al. 2017

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“…In practice, greater canopy photosynthesis can be produced under a moderately turbid sky, even though global solar radiation is reduced compared with clear sky conditions, because of the shift in RUE (Gu et al, 2003). So far a lot of such studies are carried out for forest, whereas there are only a few cases for crops (Greenwald et al, 2006).…”

Section: Uncertainty Of the Modelingmentioning

confidence: 99%

Regional crop yield, water consumption and water use efficiency and their responses to climate change in the North China Plain

Mo¹,

Liu²,

Lin³

et al. 2009

Agriculture, Ecosystems & Environment

159

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“…The relationship between DF and RUE is highly uncertain, both in magnitude (max RUE) and in shape. For example, Rochette et al (1996) observe a linear relationship over a maize field, rather than the hyperbolic relationship used in Greenwald et al (2006). These various DF-to-RUE relationships are shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, enhanced light scattering under cloudy skies diminishes the PM impact, leading to seasonal and regional differences in the relative impact of PM on crop growth. Greenwald et al (2006) modify an existing process-based crop model to incorporate effects from scattered and dif- Relationship between DF and RUE for various assumptions: max RUE = 0 % (orange), 10 % (blue), 50 % (red), and 100 % (black) from Greenwald et al (2006), and linear (green) from Rochette et al (1996).…”

Section: Introductionmentioning

confidence: 99%

Particulate matter air pollution may offset ozone damage to global crop production

Schiferl

Heald

2018

Atmos. Chem. Phys.

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Abstract. Ensuring global food security requires a comprehensive understanding of environmental pressures on food production, including the impacts of air quality. Surface ozone damages plants and decreases crop production; this effect has been extensively studied. In contrast, the presence of particulate matter (PM) in the atmosphere can be beneficial to crops given that enhanced light scattering leads to a more even and efficient distribution of photons which can outweigh total incoming radiation loss. This study quantifies the impacts of ozone and PM on the global production of maize, rice, and wheat in 2010 and 2050. We show that accounting for the growing season of these crops is an important factor in determining their air pollution exposure. We find that the effect of PM can offset much, if not all, of the reduction in yield associated with ozone damage. Assuming maximum sensitivity to PM, the current (2010) global net impact of air quality on crop production varies by crop (+5.6, −3.7, and +4.5 % for maize, wheat, and rice, respectively). Future emissions scenarios indicate that attempts to improve air quality can result in a net negative effect on crop production in areas dominated by the PM effect. However, we caution that the uncertainty in this assessment is large, due to the uncertainty associated with crop response to changes in diffuse radiation; this highlights that a more detailed physiological study of this response for common cultivars is crucial.

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The influence of aerosols on crop production: A study using the CERES crop model

Cited by 94 publications

References 31 publications

Excess Diffuse Light Absorption in Upper Mesophyll Limits CO₂ Drawdown and Depresses Photosynthesis

Excess Diffuse Light Absorption in Upper Mesophyll Limits CO₂ Drawdown and Depresses Photosynthesis

Regional crop yield, water consumption and water use efficiency and their responses to climate change in the North China Plain

Particulate matter air pollution may offset ozone damage to global crop production

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The influence of aerosols on crop production: A study using the CERES crop model

Cited by 94 publications

References 31 publications

Excess Diffuse Light Absorption in Upper Mesophyll Limits CO2 Drawdown and Depresses Photosynthesis

Excess Diffuse Light Absorption in Upper Mesophyll Limits CO2 Drawdown and Depresses Photosynthesis

Regional crop yield, water consumption and water use efficiency and their responses to climate change in the North China Plain

Particulate matter air pollution may offset ozone damage to global crop production

Contact Info

Product

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Excess Diffuse Light Absorption in Upper Mesophyll Limits CO₂ Drawdown and Depresses Photosynthesis

Excess Diffuse Light Absorption in Upper Mesophyll Limits CO₂ Drawdown and Depresses Photosynthesis