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ISPRS Int. J. Geo-Inf. 2015, 4(4), 2472-2495; doi:10.3390/ijgi4042472

Towards a Standard Plant Species Spectral Library Protocol for Vegetation Mapping: A Case Study in the Shrubland of Doñana National Park

1
Remote Sensing Area, National Institute of Aerospace Technologies (INTA), Ctra. Ajalvir s/n, Torrejón de Ardoz, 28850 Madrid, Spain
2
Remote Sensing and GIS Lab., Doñana Biological Station, CSIC, Avda. Americo Vespucio, 41092 Sevilla, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Wolfgang Kainz
Received: 11 August 2015 / Revised: 27 October 2015 / Accepted: 8 November 2015 / Published: 16 November 2015
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Abstract

One of the main applications of field spectroscopy is the generation of spectral libraries of Earth’s surfaces or materials to support mapping activities using imaging spectroscopy. To enhance the reliability of these libraries, spectral signature acquisition should be carried out following standard procedures and controlled experimental approaches. This paper presents a standard protocol for the creation of a spectral library for plant species. The protocol is based on characterizing the reflectance spectral response of different species in the spatiotemporal domain, by accounting for intra-species variation and inter-species similarity. A practical case study was conducted on the shrubland located in Doñana National Park (SW Spain). Spectral libraries of the five dominant shrub species were built (Erica scoparia, Halimium halimifolium, Ulex australis, Rosmarinus officinalis, and Stauracanthus genistoides). An estimation was made of the separability between species: on one hand, the Student’s t-test evaluates significant intra-species variability (p < 0.05) and on the other hand, spectral similarity value (SSV) and spectral angle mapper (SAM) algorithms obtain significant separability values for dominant species, although it was not possible to discriminate the legume species Ulex australis and Stauracanthus genistoides. View Full-Text
Keywords: field spectroscopy; plant spectral library; standard protocol; Doñana National Park; shrublands field spectroscopy; plant spectral library; standard protocol; Doñana National Park; shrublands
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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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MDPI and ACS Style

Jiménez, M.; Díaz-Delgado, R. Towards a Standard Plant Species Spectral Library Protocol for Vegetation Mapping: A Case Study in the Shrubland of Doñana National Park. ISPRS Int. J. Geo-Inf. 2015, 4, 2472-2495.

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