On the Uncertainty Induced by Pedotransfer Functions in Terrestrial Biosphere Modeling
نویسندگان
چکیده
Hydrological, ecohydrological, and terrestrial biosphere models depend on pedotransfer functions for computing soil hydraulic parameters based easily measurable variables, such as textural physical properties. Several have been derived in the last few decades, providing divergent estimates of parameters. In this study, we quantify how uncertainties embedded using different propagate to ecosystem dynamics, including simulated hydrological fluxes vegetation response water availability. Using a state-of-the-art ecohydrological model applied at 79 sites worldwide, show that related can affect both dynamics. Uncertainties evapotranspiration, plant productivity, structure, quantified leaf area, are order ?10% annual time scales. Runoff groundwater recharge one magnitude larger. All largely amplified when small-scale topography is taken into account distributed domain, especially water-limited ecosystems with low permeability soils. Overall, function given type higher than across types The climate-dependent but not type-dependent. Evapotranspiration, productivity semiarid climates, whereas climates where potential evapotranspiration comparable precipitation.
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ژورنال
عنوان ژورنال: Water Resources Research
سال: 2022
ISSN: ['0043-1397', '1944-7973']
DOI: https://doi.org/10.1029/2021wr031871