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The impacts of bandwidths on the estimation of leaf chlorophyll concentration using normalized difference vegetation indices

  • Mingliang Ma
  • , Runhe Shi
  • , Pudong Liu
  • , Hong Wang
  • , Wei Gao
  • East China Normal University
  • Colorado State University

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The aim of this work is to estimate leaf chlorophyll concentration with 6 different normalized difference vegetation indices (NDVIs) under 4 bandwidths (1, 5, 10 and 20 nm). A popular leaf radiative transfer model(i.e. PROSPECT) was used to simulate the leaf reflectance spectra from 400-800nm under varying chlorophyll concentrations. Then 6 combinations of bands sensitive to chlorophyll concentrations were chosen for the calculation of their NDVIs. Simulated spectral response functions were applied to calculate the synthesis reflectance spectra at the intervals of 5, 10 and 20 nm respectively, and then corresponding NDVIs were calculated. The change of correlation coefficients between the NDVIs and the leaf chlorophyll concentrations were examined. Results showed that some NDVIs had a good performance with increasing bandwidth, whereas response of different NDVIs to the 4 bandwidths were different generally. Our results suggested that the improvement of spectral resolution was not necessary for some NDVIs to estimate leaf chlorophyll.

源语言英语
主期刊名Remote Sensing and Modeling of Ecosystems for Sustainability XI
编辑Jinnian Wang, Ni-Bin Chang, Wei Gao
出版商SPIE
ISBN(电子版)9781628412482
DOI
出版状态已出版 - 2014
活动Remote Sensing and Modeling of Ecosystems for Sustainability XI - San Diego, 美国
期限: 18 8月 201420 8月 2014

出版系列

姓名Proceedings of SPIE - The International Society for Optical Engineering
9221
ISSN(印刷版)0277-786X
ISSN(电子版)1996-756X

会议

会议Remote Sensing and Modeling of Ecosystems for Sustainability XI
国家/地区美国
San Diego
时期18/08/1420/08/14

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