NDLI: Assessing temporal variation of primary and ecosystem production in two Mediterranean forests using a modified 3-PG model

Content Provider	Springer Nature Link
Author	Nolè, Angelo Collalti, Alessio Magnani, Federico Duce, Pierpaolo Ferrara, Agostino Mancino, Giuseppe Marras, Serena Sirca, Costantino Spano, Donatella Borghetti, Marco
Copyright Year	2013
Abstract	Forest ecosystem carbon uptake is heavily affected by increasing drought in the Mediterranean region.The objectives of this study were to assess the capacity of a modified 3-PG model to capture temporal variation in gross primary productivity (GPP), and ecosystem net carbon uptake (NEE) in two Mediterranean forest types.The model was upgraded from a monthly (3-PG) to a daily time step (3-PG$_{day}$), and a soil water balance routine was included to better represent soil water availability. The model was evaluated against seasonal GPP and NEE dynamics from eddy covariance measurements.Simulated and measured soil water content values were congruent throughout the study period for both forest types. 3-PG$_{day}$ effectively described the following: GPP and NEE seasonal patterns; the transition of forest ecosystems from carbon sink to carbon source; however, the model overestimated diurnal ecosystem respiration values and failed to predict ecosystem respiration peaks.The model served as a rather effective tool to represent seasonal variation in gross primary productivity, and ecosystem net carbon uptake under Mediterranean drought-prone conditions. However, its semi-empirical nature and the simplicity inherent in the original model formulation are obstacles preventing the model working well for short-term daily predictions.
Starting Page	729
Ending Page	741
Page Count	13
File Format	PDF
ISSN	12864560
Journal	Annals of Forest Science
Volume Number	70
Issue Number	7
e-ISSN	1297966X
Language	English
Publisher	Springer Paris
Publisher Date	2013-08-28
Publisher Institution	Institut National de la Recherche Agronomique (INRA)
Publisher Place	Paris
Access Restriction	Subscribed
Subject Keyword	Carbon balance Forest Ecosystem Mediterranean Drought Model Forestry Wood Science & Technology Forestry Management Tree Biology Environment
Content Type	Text
Resource Type	Article
Subject	Ecology Forestry

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