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Comparing field inventory with mechanistic modelling and light-use efficiency modelling based approaches for estimating forest net primary productivity at a regional level

Dubber, Wilhelm LU ; Eklundh, Lars LU and Lagergren, Fredrik LU (2017) In Boreal Environment Research 22. p.337-352
Abstract

Monitoring of forest carbon fluxes for the purpose of national greenhouse-gas inventorying and reporting are commonly based on repeated large-scale field measurements. Alternate approaches based on modelling of forest growth offers potential benefits such as cost savings and detailed assessments of involved carbon fluxes. We calculated the net primary productivity (NPP) of Swedish forests using two methods based on mechanistic and light use efficiency (LUE) modelling. The results were evaluated using data from traditional field inventories, and showed large variations in calculated NPP for the two methods. The national mean NPP for each method ranged between 0.35 and 0.59 kg C m- 2 year- 1,... (More)

Monitoring of forest carbon fluxes for the purpose of national greenhouse-gas inventorying and reporting are commonly based on repeated large-scale field measurements. Alternate approaches based on modelling of forest growth offers potential benefits such as cost savings and detailed assessments of involved carbon fluxes. We calculated the net primary productivity (NPP) of Swedish forests using two methods based on mechanistic and light use efficiency (LUE) modelling. The results were evaluated using data from traditional field inventories, and showed large variations in calculated NPP for the two methods. The national mean NPP for each method ranged between 0.35 and 0.59 kg C m- 2 year- 1, with an average regional difference of ±50%. Despite the large differences in calculated NPP, mechanistic modelling was promising for estimating the spatial distribution with an r2 value of 0.92 for predicting NPP of mainland Sweden.

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organization
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type
Contribution to journal
publication status
published
subject
in
Boreal Environment Research
volume
22
pages
16 pages
publisher
Finnish Zoological and Botanical Publishing Board
external identifiers
  • scopus:85027697239
ISSN
1239-6095
language
English
LU publication?
yes
id
a60fd5f6-a79a-4d80-a878-e57e5eed747b
alternative location
http://www.borenv.net/BER/pdfs/ber22/ber22-317-336.pdf
date added to LUP
2017-09-14 14:26:20
date last changed
2017-09-14 14:26:20
@article{a60fd5f6-a79a-4d80-a878-e57e5eed747b,
  abstract     = {<p>Monitoring of forest carbon fluxes for the purpose of national greenhouse-gas inventorying and reporting are commonly based on repeated large-scale field measurements. Alternate approaches based on modelling of forest growth offers potential benefits such as cost savings and detailed assessments of involved carbon fluxes. We calculated the net primary productivity (NPP) of Swedish forests using two methods based on mechanistic and light use efficiency (LUE) modelling. The results were evaluated using data from traditional field inventories, and showed large variations in calculated NPP for the two methods. The national mean NPP for each method ranged between 0.35 and 0.59 kg C m<sup>-</sup> <sup>2</sup> year<sup>-</sup> <sup>1</sup>, with an average regional difference of ±50%. Despite the large differences in calculated NPP, mechanistic modelling was promising for estimating the spatial distribution with an r2 value of 0.92 for predicting NPP of mainland Sweden.</p>},
  author       = {Dubber, Wilhelm and Eklundh, Lars and Lagergren, Fredrik},
  issn         = {1239-6095},
  language     = {eng},
  pages        = {337--352},
  publisher    = {Finnish Zoological and Botanical Publishing Board},
  series       = {Boreal Environment Research},
  title        = {Comparing field inventory with mechanistic modelling and light-use efficiency modelling based approaches for estimating forest net primary productivity at a regional level},
  volume       = {22},
  year         = {2017},
}