Matches in SemOpenAlex for { <https://semopenalex.org/work/W2773506614> ?p ?o ?g. }
- W2773506614 endingPage "275" @default.
- W2773506614 startingPage "257" @default.
- W2773506614 abstract "Aim: stomata regulate CO₂ uptake, water-vapour loss and uptake of gaseous pollutants. Jarvis-type models that apply multiple-constraint functions are commonly used to estimate stomatal conductance (gs), but most parameters for plant functional types (PFTs) have been estimated using limited information. We refined the data set of key components of the gs response to environmental factors in global PFTs. - Location: global. - Time period: data published in 1973–2015. - Major taxa studied: woody plants and major crops (rice, wheat and maize). - Methods: we reviewed 235 publications of field-observed gs for the parameterization of Jarvis-type models in global PFTs. The relationships between stomatal parameters and climatic factors [mean annual air temperature (MAT) and mean annual precipitation (MAP)] were assessed. - Results: we found that maximal stomatal conductance (gmax) in global woody plants was correlated with MAP rather than with MAT. The gmax of woody plants on average increased from 0.18 to 0.26 mol/m²/s with an increase in MAP from 0 to 2,000 mm. Models, however, can use a single gmax across major crops (0.44 mol/m²/s). We propose similar stomatal responses to light for C₃ crops and woody plants, but C₄ crops should use a higher light saturation point of gs. Stomatal sensitivity to vapour-pressure deficit (VPD) was similar across forest PFTs and crops, although desert shrubs had a relatively low sensitivity of stomata to VPD. The optimal temperature for gs increased by 1 °C for every 3.0 °C of MAT. Stomatal sensitivity to predawn water potential was reduced in hot and dry climate. The fraction of nighttime conductance to gmax (0.14 for forest trees, 0.28 for desert shrubs and 0.13 for crops) should be incorporated into the models. - Main conclusions: this analysis of global gs data provides a new summary of gs responses and will contribute to modelling studies for plant–atmosphere gas exchange and land-surface energy partitioning." @default.
- W2773506614 created "2017-12-22" @default.
- W2773506614 creator A5016893899 @default.
- W2773506614 creator A5035509716 @default.
- W2773506614 creator A5050476461 @default.
- W2773506614 creator A5056592756 @default.
- W2773506614 creator A5071153077 @default.
- W2773506614 date "2017-12-06" @default.
- W2773506614 modified "2023-10-16" @default.
- W2773506614 title "Global diurnal and nocturnal parameters of stomatal conductance in woody plants and major crops" @default.
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