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Title
Mesures physiques et signatures en télédétection

883
LABORATORY MEASUREMENTS ON HERBACEUS SPECIES
GROWN IN CONTROLLED ATMOSPHERE BY MEANS OF
THE ENEA LIDAR FLUOROSENSOR
R.BARBINI, F.COLAO, R.FANTONI, R.GUARINI 1 , A.PALUCQ, S.RIBEZZO
ENEA, Dipartimento Innovazione, Settore Elettroottica e Laser
P.O. Box 65
1-00044 Frascati RM (Italy)
G.LORENZENI, N.PUCQ
Dip. Coltivazione e Difesa Specie Legnose, Univ. Pisa
1-56010 San Pietro a Grado - Pisa (Italy)
M.LIPUCCI DI PAOLA
Dip. Biologia Piante Agrarie, Univ. Pisa
Viale delle Piagge, 23
1-56124 Pisa (Italy)
ABSTRACT
The lidar fluorosensor apparatus built at the ENEA Research Centre in Frascati, has been proven to be a versa
tile instrument for analyzing the Laser Induced Fluorescence (LIF) of chlorophyll both in the spectral and in the
time domains. The system, has been applied in the spectral domain to study the effects of gaseous pollutants on
heibaceus species. Seme preliminary results are hereafter presented and discussed.
KEYWORDS: Fluorosensor, Remote Sensing, Pollutant, S0 2 , 0 3 .
I. INTRODUCTION
LIF lidar systems have been recently proven to be very useful instruments in remote monitoring of vegetation
health, since they are capable to identify and measure the stress status of plants [1]. The lidar fluorosensor appa
ratus built at the ENEA Centre in Frascati, has been used to monitor some herbaceus species grown under fully
controlled conditions in the glasshouse of the Pisa University. Laboratory experiments have been carried out to
check the effects of plant on poisoning with the most common pollutant gases, which can be found with high
concentrations in urban and industrial areas. The purpose was to ascertain the remote sensing apparatus sensitiv
ity to the effects of these pollutant gases and to assess the validity of the present analysis of LIF data. The plant
samples have been divided in two groups for each species, the former containing the control samples, the latter
containing samples polluted with S0 2 and 0 3 at concentration typically expected in the field. Effects of the pol
lutant gases have been monitored on the vegetation pigments emission bands through the whole visible region.
In particular, the F690/F735 ratio (red/red ratio) of chlorophyll fluorescence has been considered. Differences
among the various groups of plants were found in several spectral bands and are here discussed. *
* Student