Estimating net ecosystem exchange of carbon using the normalized difference vegetation index and an ecosystem model

The evaluation and prediction of changes in carbon dynamics at the ecosystem level is a key issue in studies of global change. An operational concept for the determination of carbon fluxes for the Belgian territory is the goal of the presented study. The approach is based on the integration of remotely sensed data into ecosystem models in order to evaluate photosynthetic assimilation and net ecosystem exchange (NEE). Remote sensing can be developed as an operational tool to determine the fraction of absorbed photosynthetically active radiation (fPAR). A review of the methodological approach of mapping fPAR dynamics at the regional scale by means of NOAA11-AVHRR/2 data for the year 1990 is given. The processing sequence from raw radiance values to fPAR is presented. An interesting aspect of incorporating remote sensing derived fPAR in ecosystem models is the potential for modeling actual as opposed to potential vegetation. Further work should prove whether the concepts presented and the assumptions made in this study are valid.

[1]  G. Likens,et al.  Carbon in the biota. , 1973, Brookhaven symposia in biology.

[2]  F. Veroustraete,et al.  On the use of a simple deciduous forest model for the interpretation of climate change effects at the level of carbon dynamics , 1994 .

[3]  A. Ruimy.  Modelisation de la productivite primaire nette continentale , 1995 .

[4]  P. W. Wilson,et al.  The Kinetic Basis of Molecular Biology. , 1955 .

[5]  I. Noble,et al.  The Use of Vital Attributes to Predict Successional Changes in Plant Communities Subject to Recurrent Disturbances , 1980 .

[6]  G. Asrar,et al.  Estimating Absorbed Photosynthetic Radiation and Leaf Area Index from Spectral Reflectance in Wheat1 , 1984 .

[7]  J. P. Grime,et al.  Plant Strategies and Vegetation Processes. , 1980 .

[8]  Ranga B. Myneni,et al.  Remote sensing of vegetation canopy photosynthetic and stomatal conductance efficiencies , 1992 .

[9]  Dennis D. Baldocchi,et al.  Trace gas exchange above the floor of a deciduous forest: 1. Evaporation and CO2 efflux , 1991 .

[10]  S. Goetz,et al.  Satellite remote sensing of surface energy balance : success, failures, and unresolved issues in FIFE , 1992 .

[11]  G. Collatz,et al.  Physiological and environmental regulation of stomatal conductance, photosynthesis and transpiration: a model that includes a laminar boundary layer , 1991 .

[12]  Arthur P. Cracknell,et al.  Pixel and sub-pixel accuracy in geometrical correction of AVHRR imagery , 1989 .

[13]  F. Veroustraete,et al.  Vegetation, Modelling and Climatic Change Effects. , 1997 .

[14]  D. Paslier,et al.  Net Exchange of CO2 in a Mid-Latitude Forest , 1993, Science.

[15]  G. Mohren,et al.  Carbon in Dutch forest ecosystems , 1993 .

[16]  F. Woodward.  Climate and plant distribution , 1987 .

[17]  Ramakrishna R. Nemani,et al.  Relating seasonal patterns of the AVHRR vegetation index to simulated photosynthesis and transpiration of forests in different climates , 1988 .

[18]  R. Whittaker.  Forest Dimensions and Production in the Great Smoky Mountains , 1966 .

[19]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[20]  Richard H. Waring,et al.  Environmental Limits on Net Primary Production and Light‐Use Efficiency Across the Oregon Transect , 1994 .

[21]  Ranga B. Myneni,et al.  Remote sensing of solar radiation absorbed and reflected by vegetated land surfaces , 1992, IEEE Trans. Geosci. Remote. Sens..

[22]  G. Kohlmaier,et al.  Model of the seasonal and perennial carbon dynamics in deciduous-type forests controlled by climatic variables , 1989 .

[23]  Y. Kaufman,et al.  Algorithm for automatic atmospheric corrections to visible and near-IR satellite imagery , 1988 .

[24]  G. Woodwell,et al.  Global Climatic Change , 1989 .

[25]  H. H. D..  Lehrbuch der Botanik , 1895, Nature.

[26]  D. Bartlett,et al.  Use of vegetation indices to estimate indices to estimate intercepted solar radiation and net carbon dioxide exchange of a grass canopy , 1989 .