Spectrometry of pasture condition and biogeochemistry in the Central Amazon

Gregory P. Asner, Alan R. Townsend, Mercedes M.C. Bustamante

Research output: Contribution to journalArticle

36 Scopus citations

Abstract

Regional analyses of Amazon cattle pasture biogeochemistry are difficult due to the complexity of human, edaphic, biotic and climatic factors and persistent cloud cover in satellite observations. We developed a method to estimate key biophysical properties of Amazon pastures using hyperspectral reflectance data and photon transport inverse modeling. Remote estimates of live and senescent biomass were strongly correlated with plant-available forms of soil phosphorus and calcium. These results provide a basis for monitoring pasture condition and biogeochemistry in the Amazon Basin using spaceborne hyperspectral sensors.

Original languageEnglish (US)
Pages (from-to)2769-2772
Number of pages4
JournalGeophysical Research Letters
Volume26
Issue number17
DOIs
StatePublished - Jan 1 1999
Externally publishedYes

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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