![Hier klicken, um den Treffer aus der Auswahl zu entfernen](images/unchecked.gif) |
Titel |
Terrestrial water and carbon fluxes across climatic gradients: does plant diversity matter? |
VerfasserIn |
Christoforos Pappas, Simone Fatichi, Paolo Burlando |
Konferenz |
EGU General Assembly 2014
|
Medientyp |
Artikel
|
Sprache |
Englisch
|
Digitales Dokument |
PDF |
Erschienen |
In: GRA - Volume 16 (2014) |
Datensatznummer |
250089460
|
Publikation (Nr.) |
EGU/EGU2014-3663.pdf |
|
|
|
Zusammenfassung |
Vegetation diversity in many land-surface, ecohydrological, and dynamic vegetation models is crudely represented using a discrete classification of a handful of "plant types" (named Plant Functional Types; PFTs). The parameterization of PFTs typically reflects mean properties of observed plant functional traits over broad categories (e.g., temperate broadleaf deciduous forest) ignoring most of the inter- and intra-specific trait variability. In the present study, taking advantage of well-established plant-trait cross-correlations described by the Leaf Economics Spectrum, we generated coordinated hypothetical species across a continuous spectrum of leaf traits, rather than using pre-defined categories. The behavior of these proxy species is then tested using a mechanistic ecohydrological model (T&C) that operates as a filter of their performance. Simulations are carried out for a range of climates representative of different elevations and wetness conditions in Switzerland. Using this framework the following questions are addressed: (i) how sensitive are the carbon and water dynamics to species diversity? and (ii) which is the correlation between plant physiological traits, plant performance and observed trait distribution across climatic gradients? |
|
|
|
|
|