Pine forest investigation using high resolution P-band Pol-InSAR data

Franck Garestier; Pascale Dubois-Fernandez; Isabelle Champion; Thuy Le Toan

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DOI: 10.1016/j.rse.2010.08.028

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Pine forest investigation using high resolution P-band Pol-InSAR data
Garestier F., Dubois-Fernandez P., Champion I., Le Toan T.
Remote Sensing of Environment 115 (2011) 2897-2905 - http://hal.archives-ouvertes.fr/hal-00663256

Publication type:

Article in peer-reviewed journal

Subject:

Sciences of the Universe/Continental interfaces, environment

Environmental Sciences/Global Changes

Title:

Pine forest investigation using high resolution P-band Pol-InSAR data

Author(s):

Franck Garestier ¹, Pascale Dubois-Fernandez ², Isabelle Champion ³, Thuy Le Toan (

) ⁴

Laboratory:

1:	Morphodynamique continentale et côtière (MCC)

	http://WWW.geos.unicaen.fr

	CNRS : UMR6143 – INSU – Université de Caen Basse-Normandie – Université de Rouen

	24 Rue des tilleuls 14000 CAEN

	France

2:	ONERA (ONERA)

	ONERA

	France

3:	Écologie fonctionnelle et physique de l'environnement (EPHYSE - UR1263)

	Institut national de la recherche agronomique (INRA) : UR1263

	Service Forêt-Bois, Unité EPHYSE 33612 Cestas Cedex

	France

4:	Centre d'études spatiales de la biosphère (CESBIO)

	http://www.cesbio.ups-tlse.fr

	CNRS : UMR5126 – Institut de recherche pour le développement [IRD] – CNES – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III

	bpi 2801 18 Av Edouard Belin 31401 TOULOUSE CEDEX 4

	France

Abstract:

A Pol-InSAR dataset acquired at P-band over a maritime pine forest (Nezer forest of Landes, France) has been investigated and compared with tree structural ground measurements in order to identify scatterers associated with elementary scattering mechanisms in the canopy layer. Since this managed forest is constituted by different height stands, it allows to investigate mechanism change in the vertical direction during the forest growth. It has been observed that VV channel was the most elevated, which can be accounted for a maximum attenuation in the vertical direction and partially for the presence of sub-vertical branches in the top canopy layer, and that this channel was the most sensitive to the tree density in reason of an important ground reﬂectivity. The most pure double-bounce scattering mechanism component is received in HH-VV channel where the corresponding phase center reaches the ground level for large Diameter at Breast Height. It is also supposed that HH channel, which receives double bounce backscatter, was affected by the sub-horizontal primary branch development, which induces an elevation of the phase center over oldest trees while tree density diminution enhances backscatter from the ground level. Finally, the crosspolar channel appeared the less perturbed by the tree density than VV channel since it receives predominantly the canopy contribution.

Fulltext language:

English

Journal:

Remote Sensing of Environment
Publisher	Elsevier
ISSN	0034-4257

Audience:

international

Publication date:

2011-07-07

Volume:

115

Page, identifiant, ...:

2897-2905

Keyword(s):

SAR Polarimetry Interferometry Forestry


hal-00663256, version 1
http://hal.archives-ouvertes.fr/hal-00663256
oai:hal.archives-ouvertes.fr:hal-00663256
From: Valérie Casado <>
Submitted on: Thursday, 26 January 2012 14:42:15
Updated on: Thursday, 26 January 2012 14:42:15