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Mapping NPP for a coniferous forest in southern sweden using data from Terra/MODIS

Olofsson, P. LU and Eklundh, L. LU orcid (2005) 31st International Symposium on Remote Sensing of Environment, ISRSE 2005: Global Monitoring for Sustainability and Security
Abstract

Net primary production (NPP) is modeled for a coniferous forest in southern Sweden for 2001. The model is based on the light-use efficiency concept where NPP is calculated as a product of absorbed photosynthetically active radiation (APAR) and a light-use efficiency factor (ε). APAR is estimated from the fraction of APAR (FAPAR) multiplied with the daily total amount of incoming PAR. FAPAR is obtained by linear transformation of 250 m NDVI from Terra/MODIS. Prior to the transformation, the NDVI has been seasonally adjusted by fitting local asymmetric Gauss functions to the time series. ε is modeled daily as a function of temperature, latitude and time. The model is evaluated against an NPP time series obtained from flux measurements of... (More)

Net primary production (NPP) is modeled for a coniferous forest in southern Sweden for 2001. The model is based on the light-use efficiency concept where NPP is calculated as a product of absorbed photosynthetically active radiation (APAR) and a light-use efficiency factor (ε). APAR is estimated from the fraction of APAR (FAPAR) multiplied with the daily total amount of incoming PAR. FAPAR is obtained by linear transformation of 250 m NDVI from Terra/MODIS. Prior to the transformation, the NDVI has been seasonally adjusted by fitting local asymmetric Gauss functions to the time series. ε is modeled daily as a function of temperature, latitude and time. The model is evaluated against an NPP time series obtained from flux measurements of net ecosystem exchange (NEE) and measurements of respiration carried out simultaneously at the site (r 2 = 0.78 for modeled and measured NPP). FAPAR is evaluated against measurements 2004.

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Contribution to conference
publication status
published
subject
keywords
FAPAR, LUE, MODIS, Norway spruce, NPP, Sweden
conference name
31st International Symposium on Remote Sensing of Environment, ISRSE 2005: Global Monitoring for Sustainability and Security
conference location
St. Petersburg, Russian Federation
conference dates
2005-06-20 - 2005-06-24
external identifiers
  • scopus:84879722137
language
English
LU publication?
yes
id
782d9312-8ee7-4c5c-8050-f36df20cc81e
date added to LUP
2020-04-07 22:33:58
date last changed
2021-03-24 03:56:32
@misc{782d9312-8ee7-4c5c-8050-f36df20cc81e,
  abstract     = {<p>Net primary production (NPP) is modeled for a coniferous forest in southern Sweden for 2001. The model is based on the light-use efficiency concept where NPP is calculated as a product of absorbed photosynthetically active radiation (APAR) and a light-use efficiency factor (ε). APAR is estimated from the fraction of APAR (FAPAR) multiplied with the daily total amount of incoming PAR. FAPAR is obtained by linear transformation of 250 m NDVI from Terra/MODIS. Prior to the transformation, the NDVI has been seasonally adjusted by fitting local asymmetric Gauss functions to the time series. ε is modeled daily as a function of temperature, latitude and time. The model is evaluated against an NPP time series obtained from flux measurements of net ecosystem exchange (NEE) and measurements of respiration carried out simultaneously at the site (r <sup>2</sup> = 0.78 for modeled and measured NPP). FAPAR is evaluated against measurements 2004.</p>},
  author       = {Olofsson, P. and Eklundh, L.},
  language     = {eng},
  month        = {12},
  title        = {Mapping NPP for a coniferous forest in southern sweden using data from Terra/MODIS},
  year         = {2005},
}