Journal of University of Chinese Academy of Sciences >
Influence of Mesophyll Structure on Leaf Spectra and Biochemical Inversion
Received date: 2004-07-26
Revised date: 2004-11-19
Online published: 2005-09-15
This paper presents an in2depth analysis on the influence of mesophyll structure parameter N in PROSPECT model on leaf reflectance and transmittance spectra. Optimal N values of samples in LOPEX93 data set are calculated by minimizing a whole2band cost function using the iterative method. Simulated spectra under calculated optimal N values are compared with measured ones. Further,inversions of chlorophyll and water content under different N values are performed. Results show that : (1) the influence of N involves the whole2band spectra from visible to near infrared,and the influence decreases with its values ; (2) simulated spectra with optimal N, which is calculated by minimizing a whole2band cost function using the iterative method,match very well with measured spectra ; (3) the inversion accuracy of chlorophyll and water content by using overestimated N is better than that by using underestimated N ; (4) the inversion accuracy of water content is significantly better than that of chlorophyll partially due to the selection of cost function.
SHI Run-He , ZHUANG Da-Fang , NIU Zheng , WANG Wen . Influence of Mesophyll Structure on Leaf Spectra and Biochemical Inversion[J]. Journal of University of Chinese Academy of Sciences, 2005 , 22(5) : 589 -595 . DOI: 10.7523/j.issn.2095-6134.2005.5.009
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