||Fiber Optic Point Quadrat System for Improved Accuracy in Vegetation Sampling.
Caldwell, M. M. ;
Harris, G. W. ;
Dzurec, R. S. ;
||Utah State Univ., Logan.;Corvallis Environmental Research Lab., OR.
Fiber optics ;
Nondestructive testing ;
Plant canopies ;
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An automated, fiber optic point quadrat system for vegetation sampling is described. Because the effective point diameter of the system never exceeds 25um it minimizes the substantial errors which can arise with conventional point quadrats. Automatic contact detection eliminates operator subjectivity, and permits work in dense canopies. Additionally, sampling speed is increased over that of conventional systems. (Copyright (c) Springer-Verlag 1983.)