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Remote Sens. 2016, 8(3), 216; doi:10.3390/rs8030216

The Optimal Leaf Biochemical Selection for Mapping Species Diversity Based on Imaging Spectroscopy

Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth (RADI), Chinese Academy of Science, Datun Road, Chaoyang District, Beijing 100101, China
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Academic Editors: Parth Sarathi Roy and Prasad S. Thenkabail
Received: 30 October 2015 / Revised: 25 January 2016 / Accepted: 2 February 2016 / Published: 8 March 2016
(This article belongs to the Special Issue Remote Sensing of Biodiversity)
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Abstract

Remote sensing provides a consistent form of observation for biodiversity monitoring across space and time. However, the regional mapping of forest species diversity is still difficult because of the complexity of species distribution and overlapping tree crowns. A new method called “spectranomics” that maps forest species richness based on leaf chemical and spectroscopic traits using imaging spectroscopy was developed by Asner and Martin. In this paper, we use this method to detect the relationships among the spectral, biochemical and taxonomic diversity of tree species, based on 20 dominant canopy species collected in a subtropical forest study site in China. Eight biochemical components (chlorophyll, carotenoid, specific leaf area, equivalent water thickness, nitrogen, phosphorus, cellulose and lignin) are quantified by spectral signatures (R2 = 0.57–0.85, p < 0.01). We also find that the simulated maximum species number based on the eight optimal biochemical components is approximately 15, which is suitable for most 30 m × 30 m forest sites within this study area. This research may support future work on regional species diversity mapping using airborne imaging spectroscopy. View Full-Text
Keywords: forest biodiversity; imaging spectroscopy; biochemical components; partial least squares; Monte-Carlo; species richness forest biodiversity; imaging spectroscopy; biochemical components; partial least squares; Monte-Carlo; species richness
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhao, Y.; Zeng, Y.; Zhao, D.; Wu, B.; Zhao, Q. The Optimal Leaf Biochemical Selection for Mapping Species Diversity Based on Imaging Spectroscopy. Remote Sens. 2016, 8, 216.

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