Vegetation-specific model parameters are not required for estimating gross primary production

W Yuan; W Cai; S Liu; W Dong; J Chen; MA Arain; PD Blanken; A Cescatti; G Wohlfahrt; T Georgiadis; L Genesio; D Gianelle; A Grelle; G Kiely; A Knohl; D Liu; MV Marek; L Merbold; Leonardo Montagnani; O Panferov; M Peltoniemi; S Rambal; A Raschi; A Varlagin; J Xia

doi:10.1016/j.ecolmodel.2014.08.017

Vegetation-specific model parameters are not required for estimating gross primary production

W Yuan, W Cai, S Liu, W Dong, J Chen, MA Arain, PD Blanken, A Cescatti, G Wohlfahrt, T Georgiadis, …

Ecological Modelling, Vol.292, pp.1-10

292

24/11/2014

: https://doi.org/10.1016/j.ecolmodel.2014.08.017

https://hdl.handle.net/10863/12930

Gross primary production

Light use efficiency

Model parameters

Models of gross primary production (GPP) based on remote sensing measurements are currently parameterized with vegetation-specific parameter sets and therefore require accurate information on the distribution of vegetation to drive them. Can this parameterization scheme be replaced with a vegetation-invariant set of parameters that can maintain or increase model applicability by reducing errors introduced from the uncertainty of land cover classification? Based on the measurements of ecosystem carbon fluxes from 168 globally distributed sites in a range of vegetation types, we examined the predictive capacity of seven light use efficiency (LUE) models. Two model experiments were conducted: (i) a constant set of parameters for various vegetation types and (ii) vegetation-specific parameters. The results showed no significant differences in model performance in simulating GPP while using both set of parameters. These results indicate that a universal of set of parameters, which is independent of vegetation cover type and characteristics can be adopted in prevalent LUE models. Availability of this well tested and universal set of parameters would help to improve the accuracy and applicability of LUE models in various biomes and geographic regions.

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url

https://www.sciencedirect.com/science/article/pii/S0304380014003962

: Vegetation-specific model parameters are not required for estimating gross primary production
: W Yuan
W Cai
S Liu
W Dong
J Chen
MA Arain
PD Blanken
A Cescatti
G Wohlfahrt
T Georgiadis
L Genesio
D Gianelle
A Grelle
G Kiely
A Knohl
D Liu
MV Marek
L Merbold
Leonardo Montagnani
O Panferov
M Peltoniemi
S Rambal
A Raschi
A Varlagin
J Xia
: Ecological Modelling, Vol.292, pp.1-10
: 0304-3800
: 292
: Elsevier
: 10
: (UNIBZ)23920887
991005773387701241
: WOS:000343845400001
: 2-s2.0-84906874350
: Faculty of Science and Technology
: English
: Journal article
: Yuan W, Cai W, Liu S, Dong W, Chen J, Arain MA, Blanken PD, Cescatti A, Wohlfahrt G, Georgiadis T, Genesio L, Gianelle D, Grelle A, Kiely G, Knohl A, Liu D, Marek MV, Merbold L, Montagnani L, Panferov O, Peltoniemi M, Rambal S, Raschi A, Varlagin A, Xia J