Direct Penman–Monteith parameterization for estimating stomatal conductance and modeling sap flow
نویسندگان
چکیده
منابع مشابه
Parameterization and Testing of a Coupled Model of Photosynthesis-stomatal Conductance for Greenhouse Rose Crop
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Representation of stomatal physiology in models of plant-atmosphere gas exchange is minimal, and direct application of process-based models is limited by difficulty of parameter estimation. We derived simple models of stomatal conductance from a recent process-based model, and cross-validated them against measurements of sap flux (176-365 d in length) in 36 individual trees of two age classes f...
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We analyzed assumptions and measurement errors in estimating canopy transpiration (E(L)) from sap flux (J(S)) measured with Granier-type sensors, and in calculating canopy stomatal conductance (G(S)) from E(L) and vapor pressure deficit (D). The study was performed in 12-year-old Pinus taeda L. stands with a wide range in leaf area index (L) and growth rate. No systematic differences in J(S) we...
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Uncertainties in ecophysiological responses to environment, such as the impact of atmospheric and soil moisture conditions on plant water regulation, limit our ability to estimate key inputs for ecosystem models. Advanced statistical frameworks provide coherent methodologies for relating observed data, such as stem sap flux density, to unobserved processes, such as canopy conductance and transp...
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ژورنال
عنوان ژورنال: Trees
سال: 2016
ISSN: 0931-1890,1432-2285
DOI: 10.1007/s00468-016-1513-3