Estimación de variables biofísicas del pastizal en un ecosistema de dehesa a partir de espectro-radiometría de campo e imágenes hiperespectrales aeroportadas

Author:

Melendo-Vega J. R.,Martín M. P.,Vilar del Hoyo L.,Pacheco-Labrador J.,Echavarría P.,Martínez-Vega J.

Abstract

<p>The aim of this paper is the estimation of biophysical vegetation parameters from its optical properties. The variables Fuel Moisture Content (<em>FMC</em>), Canopy Water Content (<em>CWC</em>), Leaf Area Index (<em>LAI</em>), dry matter (Cm) and AboveGround Biomass (AGB) were estimated in the laboratory from vegetation samples collected simultaneously with the acquisition of spectral data from the Compact Airborne Spectrographic Imager (CASI) sensor and the field spectroradiometer ASD FieldSpec® 3. Spectral vegetation indices found in the literature were computed from hyperspectral data. Their linear relationships with the biophysical variables measured in the field were analysed. Results show consistent relationships between analysed biophysical parameters and spectral indices, mainly those using SWIR and red-egde bands which reveal the importance of these spectral regions for the estimation of biophysical variables in herbaceous covers. Determination coefficients (<em>R<sup>2</sup></em>) above 0.91 and <em>RRMSE</em> of 21.4% have been obtained for the spectral indexes calculated whit ASD data, and 0.91 <em>R<sup>2 </sup></em>and <em>RRMSE</em> of 15.5% for the spectral indexes calculated whit CASI data.</p>

Publisher

Universitat Politecnica de Valencia

Subject

Earth and Planetary Sciences (miscellaneous),Geography, Planning and Development

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. A review of in-situsampling protocols to support the remote sensing of vegetation;GeoFocus Revista Internacional de Ciencia y Tecnología de la Información Geográfica;2022-07-27

2. Análisis de la diversidad funcional del estrato herbáceo en un ecosistema de dehesa a partir de datos hiperespectrales "in situ";Cuadernos de Investigación Geográfica;2022-06-28

3. Evaluación del estado sanitario de individuos de Araucaria araucana a través de imágenes hiperespectrales;Revista de Teledetección;2018-12-26

4. Assessment of atmospheric correction methods for Sentinel-2 images in Mediterranean landscapes;International Journal of Applied Earth Observation and Geoinformation;2018-12

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