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Spectrometry of Pasture Condition and Biogeochemistry in the Central AmazonRegional 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.
Document ID
20010048651
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Asner, Gregory P.
(Stanford Univ. Stanford, CA United States)
Townsend, Alan R.
(Colorado Univ. Boulder, CO United States)
Bustamante, Mercedes M. C.
(Brasilia Univ. Brasilia, Brazil)
Date Acquired
August 20, 2013
Publication Date
September 1, 1999
Publication Information
Publication: Geophysical Research Letters
Publisher: American Geophysical Union
Volume: 26
Issue: 17
ISSN: 0094-8276
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
Paper-1999GL900546
Funding Number(s)
CONTRACT_GRANT: NAGW-5253
Distribution Limits
Public
Copyright
Other

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