NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Detection of metal stress in boreal forest species using the 0.67-micron chlorophyll absorption bandSeveral recent studies have shown that a shift of the red-edge inflection near 0.70 micron in vegetation reflectance spectra is an indicator of metal stress, partially attributable to changes in chlorophyll concentration. This 'red-edge shift', however, is difficult to detect and has been reported both toward longer (red) and shorter (blue) wavelengths. Our work demonstrates that direct measurement of the depth and width of the chlorophyll absorption band at 0.67 micron using digital feature extraction and absorption band characterization procedures developed for the analysis of mineral spectra is a more consistent indicator of metal stress. Additionally, the magnitude of these parameters is generally greater than that of the red edge shift and thus should be more amenable to detection and mapping using field and aircraft spectrometers.
Document ID
19930045007
Document Type
Conference Paper
Authors
Singhroy, Vernon H. (Canada Centre for Remote Sensing Ottawa, United States)
Kruse, Fred A. (Cooperative Inst. for Research in Environmental Sciences; Colorado Univ. Boulder, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1991
Publication Information
Publication: In: Thematic Conference on Geologic Remote Sensing, 8th, Denver, CO, Apr. 29-May 2, 1991, Proceedings. Vol. 1 (A93-28978 10-43)
Subject Category
EARTH RESOURCES AND REMOTE SENSING
Funding Number(s)
CONTRACT_GRANT: NAGW-1601
Distribution Limits
Public
Copyright
Other