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Estimating Cotton Canopy Ground Cover from Remotely Sensed Scene Reflectance
Author(s) -
Maas Stephan J.
Publication year - 1998
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1998.00021962009000030011x
Subject(s) - remote sensing , reflectivity , environmental science , cover (algebra) , canopy , orientation (vector space) , land cover , satellite , plant cover , field (mathematics) , computer science , mathematics , geography , land use , ecology , engineering , optics , mechanical engineering , physics , geometry , archaeology , aerospace engineering , pure mathematics , biology
Many agricultural applications require spatially distributed information on growth‐related crop characteristics that could be supplied through aircraft or satellite remote sensing. A study was conducted to develop and test a methodology for estimating plant canopy ground cover for cotton ( Gossypium hirsutum L.) from scene reflectance. Previous studies indicated that a relatively simple relationship between ground cover and scene reflectance could be developed based on linear mixture modeling. Theoretical analysis indicated that the effects of shadows in the scene could be compensated for by averaging the results obtained using scene reflectance in the red and near‐infrared wavelengths. The methodology was tested using field data collected over several years from cotton test plots in Texas and California. Results of the study appear to verify the utility of this approach. Since the methodology relies on information that can be obtained solely through remote sensing, it would be particularly useful in applications where other field information, such as plant size, row spacing, and row orientation, is unavailable.