Towards a quantitative interpretation of vegetation indices Part 1: Biophysical canopy properties and classical indices

Abstract The information content of vegetation indices currently derived from satellite observations is discussed using a physically‐based approach. These indices can, in principle, be related to some of the biophysical properties of the canopy through a complex set of equations, provided atmospheric effects, the anisotropy of the coupled surface‐atmosphere system, and the morphology and optical heterogeneity of the canopy are taken into account. Atmospheric effects are discussed on the basis of an approximate analytical expression applicable to vegetation indices built from AVHRR channels 1 and 2. These indices strongly depend on the aerosol and water vapor content, a fact that limits their quantitative interpretation in terms of physical and biophysical properties of the canopy. The interaction between the electromagnetic solar radiation and the surface is discussed using physical models of albedos developed for vegetation canopies. Finally, the biophysical leaf model PROSPECT is used to parameterize re...

[1]  J. Dave.  Extensive datasets of the diffuse radiation in realistic atmospheric models with aerosols and common absorbing gases , 1978 .

[2]  P. Sellers.  Canopy reflectance, photosynthesis, and transpiration. II. the role of biophysics in the linearity of their interdependence , 1987 .

[3]  Inez Y. Fung,et al.  Application of Advanced Very High Resolution Radiometer vegetation index to study atmosphere‐biosphere exchange of CO2 , 1987 .

[4]  Richard L. Thompson,et al.  Inversion of vegetation canopy reflectance models for estimating agronomic variables. V. Estimation of leaf area index and average leaf angle using measured canopy reflectances , 1984 .

[5]  R. T. Watson,et al.  Greenhouse gases and aerosols , 1990 .

[6]  R. Dickinson,et al.  A physical model of the bidirectional reflectance of vegetation canopies: 2. Inversion and validation , 1990 .

[7]  Peter Koepke,et al.  Removal of Atmospheric Effects prom AVHRR Albedos , 1989 .

[8]  D. Kimes,et al.  Irradiance measurement errors due to the assumption of a Lambertian reference panel , 1982 .

[9]  B. Pinty,et al.  On the design and validation of surface bidirectional reflectance and albedo models , 1992 .

[10]  G. Suits.  The calculation of the directional reflectance of a vegetative canopy , 1971 .

[11]  C. J. Tucker,et al.  Relationship between atmospheric CO2 variations and a satellite-derived vegetation index , 1986, Nature.

[12]  R. Dickinson,et al.  A physical model for predicting bidirectional reflectances over bare soil , 1989 .

[13]  Toby Grier,et al.  Estimation of canopy parameters of row planted vegetation canopies using reflectance data for only four view directions , 1987 .

[14]  P. J. Camillo,et al.  A canopy reflectance model based on an analytical solution to the multiple scattering equation , 1987 .

[15]  B. Pinty,et al.  A physical model of the bidirectional reflectance of vegetation canopies , 1990 .

[16]  M. Verstraete.  Radiation transfer in plant canopies - Transmission of direct solar radiation and the role of leaf orientation , 1987 .

[17]  J. C. Price,et al.  Timing of NOAA afternoon passes , 1991 .

[18]  B. Pinty,et al.  A Method for the Estimate of Broadband Directional Surface Albedo from a Geostationary Satellite , 1987 .

[19]  Michel M. Verstraete,et al.  Radiation transfer in plant canopies: Scattering of solar radiation and canopy reflectance , 1988 .

[20]  Z. Šesták.  Photosynthesis during leaf development , 1985, Tasks for vegetation science.

[21]  C. Tucker,et al.  Satellite remote sensing of primary production , 1986 .

[22]  E. Raschke,et al.  The radiation balance of the earth-atmosphere system from Nimbus 3 radiation measurements , 1973 .

[23]  R. Dickinson.  Land Surface Processes and Climate—Surface Albedos and Energy Balance , 1983 .

[24]  A. Kuusk,et al.  A reflectance model for the homogeneous plant canopy and its inversion , 1989 .

[25]  B. Holben,et al.  NOAA-11 AVHRR visible and near-IR inflight calibration , 1990 .

[26]  Thomas H. Vonder Haar,et al.  The annual radiation balance of the earth-atmosphere system during 1969-70 from Nimbus 3 measurements. , 1973 .

[27]  B. Pinty,et al.  The potential contribution of satellite remote sensing to the understanding of arid lands processes , 1991 .

[28]  Philippe H. Martin.  Modeling forest physics and ecology to assess the impacts of climate variability , 1991 .

[29]  Bernard Pinty,et al.  Extracting information on surface properties from bidirectional reflectance measurements , 1991 .

[30]  C. Tucker.  Red and photographic infrared linear combinations for monitoring vegetation , 1979 .

[31]  Richard L. Thompson,et al.  Inversion of vegetation canopy reflectance models for estimating agronomic variables. II. Use of angle transforms and error analysis as illustrated by suits' model , 1984 .

[32]  F. Baret,et al.  PROSPECT: A model of leaf optical properties spectra , 1990 .

[33]  S. I. Rasool,et al.  Surface albedo and the Sahel drought , 1984, Nature.

[34]  Larry L. Stowe,et al.  Reflectance characteristics of uniform Earth and cloud surfaces derived from NIMBUS‐7 ERB , 1984 .

[35]  R. Dickinson,et al.  Relating surface albedos in GCM to remotely sensed data , 1990 .

[36]  Ranga B. Myneni,et al.  Photon-Vegetation Interactions , 1991, Springer Berlin Heidelberg.

[37]  P. Sellers.  Canopy reflectance, photosynthesis and transpiration , 1985 .

[38]  B. Hapke.  Bidirectional reflectance spectroscopy: 1. Theory , 1981 .

[39]  Bidirectional Reflectance Modeling of Non-homogeneous Plant Canopies , 1984 .

[40]  C. Simmer,et al.  Remote Sensing of Angular Characteristics of Canopy Reflectances , 1985, IEEE Transactions on Geoscience and Remote Sensing.

[41]  C. Tucker,et al.  Application of AVHRR vegetation index to study atmosphere-biosphere exchange of CO2: Results from a 3-D tracer transport model , 1985, STOC 1985.

[42]  C. Tucker,et al.  AVHRR for Monitoring Global Tropical Deforestation , 1989 .

[43]  A. Marshak,et al.  Calculation of canopy bidirectional reflectance using the Monte Carlo method , 1988 .