کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4378211 | 1617534 | 2008 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Bayesian calibration of a model describing carbon, water and heat fluxes for a Swedish boreal forest stand
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
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چکیده انگلیسی
This study quantified major fluxes of carbon (C), heat and water, including uncertainty estimates, in a boreal forest in northern Sweden, using a process-based model (CoupModel) and Bayesian calibration methodology. Coupled C, water and heat fluxes were described together with estimated uncertainties for all major components of the simulated C budget. Simulated mean gross primary production was 641 ± 74 g C mâ2 yrâ1, total ecosystem respiration 570 ± 55 g C mâ2 yrâ1 and net ecosystem productivity 71 ± 37 g C mâ2 yrâ1. Most high-resolution measurements were well described but some interesting exceptions arose between model and measurements, e.g. latent heat flux was overestimated and field layer (understory) root litter production underestimated. Bayesian calibration reduced the assumed prior parameter ranges in 30 of 33 parameters, thus reducing the uncertainty in the estimates. There was a high degree of couplings between different sub-models and processes in the model, highlighting the importance of considering parameters not as singularities but in clusters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Modelling - Volume 213, Issues 3â4, 24 May 2008, Pages 331-344
Journal: Ecological Modelling - Volume 213, Issues 3â4, 24 May 2008, Pages 331-344
نویسندگان
Magnus Svensson, Per-Erik Jansson, David Gustafsson, Dan Berggren Kleja, Ola Langvall, Anders Lindroth,