Improving the modelling and understanding of carbon-nitrogen-water interactions in a semiarid Mediterranean oak forest

Cristina Puertes, María González-Sanchis, Antonio Lidón, Inmaculada Bautista, Antonio D. del Campo, Cristina Lull and Félix Francés

Ecological Modelling, 2020, vol. 420, issue C

Abstract: Mediterranean drylands are often nutrient poor, but parameter requirements of forest ecosystem models are usually high. Therefore, there is a need for developing parsimonious nutrients models. In that sense, this study aims to contribute to a better understanding and modelling of the hydrological and biogeochemical (carbon and nitrogen) cycles and their interactions in semiarid conditions and to test the capability of a new parsimonious model to satisfactorily reproduce them. The proposed model (TETIS-CN) and two additional widely used models were implemented in a Quercus ilex forest, and no noteworthy differences were found. Results suggest that: (1) it is important to include carbon observations in the calibration process and to consider all the existing vegetation species in the simulation; (2) a fixed daily potential uptake may not be appropriate to reproduce plant nitrogen uptake; and (3) TETIS-CN, with a lower number of parameters, proved an acceptable tool.

Keywords: Carbon; Nitrogen; Water; Plant-soil interactions; Mediterranean drylands; Quercus ilex (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:eee:ecomod:v:420:y:2020:i:c:s030438002030048x

DOI: 10.1016/j.ecolmodel.2020.108976

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