Problems with scaling leaf water relations to regional scales

E. Raymond Hunt, Steven W. Running

Research output: Contribution to conferencePaperpeer-review

Abstract

Laboratory, field, and aircraft studies are compared to determine if plant water stress can be remotely sensed using optical-infrared wavelengths. The ratio of reflectance factors at 1.6 μm to 0.82 μm is shown to increase linearly with decreasing leaf relative water content for six species measured in the laboratory. With the data for all species combined, the 1.6-μm/0.82-μm ratio is linearly correlated to the base 10 logarithm of equivalent water thickness. The leaves lost about one half of their water before an increase in the 1.6-μm/0.82-μm ratio is significant, well beyond the range for stressed plants.

Original languageEnglish
Pages1259-1262
Number of pages4
StatePublished - 1990
Event10th Annual International Geoscience and Remote Sensing Symposium - IGARSS '90 - College Park, MD, USA
Duration: May 20 1990May 24 1990

Conference

Conference10th Annual International Geoscience and Remote Sensing Symposium - IGARSS '90
CityCollege Park, MD, USA
Period05/20/9005/24/90

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