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Study on Detection Method of Cyclamen Leaf Water Content Based on Spectral Index(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年12期
Page:
75-77
Research Field:
Publishing date:

Info

Title:
Study on Detection Method of Cyclamen Leaf Water Content Based on Spectral Index
Author(s):
LI Jun; SONG Wen-long
College of Mechanical and Electrical Engineering,Northeast Forestry University,Harbin,Heilongjiang 150040
Keywords:
Cyclamen; leaf water rate; reflectance spectra; spectral index
PACS:
S 682
DOI:
-
Abstract:
Taking Cyclamen as materials,the relationship between canopy reflectance characteristics and plant water status of Cyclamen under different water levels were studied and the correlations between normalized difference water index and Cyclamen leaf water content were studied by linear fit,polynomialfit and exponential fit.The results showed that the water contents of canopy leaf had a significant correlation with the spectral reflectance bands of 944,1 033,1 105,1 970,2 813,3 350 nm at different growth stages.Also,the water contents of canopy leaf could be a best correlation with the normalized difference vegetation index NDVI (820,1 600),whose coefficient of determination was 0.73006.The best regression models to estimate leaf water rate were set up.

References:

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Last Update: 2014-08-01