XXII ISPRS Congress 2012: Technical Commission VIII

Shortis, M.; Shimoda, H.; Cho, K.

Bibliographic data

Multivolume work

Persistent identifier:: 1663813779

Title:: XXII ISPRS Congress 2012

Sub title:: Melbourne, Australia, 25 August-1 September 2012

Year of publication:: 2013

Place of publication:: Red Hook, NY

Publisher of the original:: Curran Associates, Inc.

Identifier (digital):: 1663813779

Language:: English

Additional Notes:: Kongress-Thema: Imaging a sustainable future

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Document type:: Multivolume work

Volume

Persistent identifier:: 1663822514

Title:: Technical Commission VIII

Scope:: 590 Seiten

Year of publication:: 2014

Place of publication:: Red Hook, NY

Publisher of the original:: Curran Associates, Inc.

Identifier (digital):: 1663822514

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(39,B8)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist ermittelt.; Literaturangaben

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Shortis, M.; Shimoda, H.; Cho, K.

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 22., 2012, Melbourne; International Society for Photogrammetry and Remote Sensing

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: [VIII/7: Forestry]

Document type:: Multivolume work

Structure type:: Chapter

IX-B8, 2012 t, L., 2008. World ation of the United . 2011). T, Qixing Farm, 22 Mar. 2011). | Bareth, G., 2012. nsing data for crop | Congress of the | Bareth, G., 2011. regional (agro-) the International ethods for change SM), Hong Kong, ang, S., Yang, B., of China, Chinese nese. Recent trends of by large-scale hinese Geogr Sci, ao, D., 2005. Main > background in ecades. Journal of inese with English duction to China ess, Beijing, China 167.html, (5 Apr. 1 Gao, W., 2012. Methane Emissions 990 to 2010. PLoS ENTS ship Council (Nov. k is funded by the leral Ministry of . 01DO12013), the no. BA 2062/8-1), nt Centre and tation, both in the non-farm area ded by Northeast inese Academy of ase. The land use for Resources and f Sciences. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B8, 2012 XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia CHANGE ANALYSIS OF THE SPECTRAL CHARACTERISTICS OF RUBBER TREES AT CANOPY AND LEAF SCALES DURING THE BRAZILIAN AUTUMN C. H. Amaral * *, T. I. R. Almeida*, G. C. M. Quitério, M. N. Alves ©, C. R. Souza Filho" "Institute of Geosciences, University of Sáo Paulo, Rua do Lago 562, 05508-080, Sáo Paulo, SP, Brazil - (chamaral, talmeida) @usp.br Institute of Geosciences, University of Campinas, Rua Jodo Pandi Calôgeras 51, 13083-870, Campinas, SP, Brazil - (giuliana, beto) @ige.unicamp.br ‘Multidisciplinary Center of Chemical, Biological and Agricultural Research, University of Campinas, P.O. BOX 6171, 13081-970, Campinas, SP, Brazil - mnopper@cpgba.unicamp.br Commission VIII, WG VIII/7 KEY WORDS: Forestry, spectral, weather, comparison, hyperspectral, high resolution. ABSTRACT: The objective of this work is to investigate the hyperspectral remote sensing potential to detect spectral changes undergone by clones of two rubber trees within Brazilian Autumn, with decrease of rain, temperature and photoperiod between May and June. Indirectly, we also analyze the ability of the data to help discriminating the clones at two dates in autumn. The average canopy spectra of the stands were obtained with two overpasses of the ProSpecTIR-VS airborne hyperspectral sensor (357 bands between 400-2,500 nm: spatial resolution of 1m) by 14" May and 17" June, in 2010 year. Additionally measurements of leaf spectra were taken in the same dates, but in the 2011 year. Considering the analysis of the spectra measured from the three stands, this indicates that spectral differences in the VIS (400-700 nm) region are of genetic origin and occur regardless of environmental conditions and period of data collection. In the NIR (700-1,300 nm) range, the environmental factors predominate in the two periods of data collection. The SWIR (1,300-2,500 nm) displayed the largest differences between the months of data collection. In May, the relationship between stands indicated the prevalence of environmental aspects. However, in June, the stands and clones spectral behaviour indicates that as the temperature, the rainfall and the photoperiod are lower closer to winter, the SWIR can be effectively used to discriminate and map these clones separately. 1. INTRODUCTION Belonging to Euphorbiaceae family, the genus Hevea, native from Amazon region presents 11 species, and its main historical-commercial representative is the Hevea brasiliensis (Wild ex Adr. de Juss) Muell-Arg. Its domestication started about 130 years ago (Gongalves et al, 2006), although the interest in studying its cultivation within the state of Säo Paulo - southeast region of Brazil — aroused only in 1951 when the country started to export rubber (latex) again. Its cultivation success in the State of Sáo Paulo — where the edaphoclimatic conditions are very different from the Amazon region (its original site), required the application of genetically improved plants as well as the test of several cultivars, such as the ones Which are being studied here. There are not many works within the literature which approach the studies of rubber trees by using remote sensing techniques. Nandris et al. (1985), when utilizing near infra-red, aimed to verify the damages caused by the parasites of rubber trees’ roots in Ivory Coast. Suratman et al. (2002 and 2004), by using TM/Landsat images, aimed the attributes modeling — such as the volume, area and age — of rubber tree plantations in Malaysia. There are even other works which studied the spectral behaviour of genetic and environmental variations with species of the same genus as well as with different phenotypes of the Same specie, as observed at Castro & Sanchez-Azofeifa (2008) and at Martin & Asner (2007) respectively. Using the ProSpecTIR-VS sensor, the same one that is used in this =... ©: s Corresponding author. This is useful to know for communication with the appropriate person in cases with more than one author. research, Ustin (2008) held a pioneer work on the senescence recognition of Pine's different species. The application of field spectrometer — in order to compare and validate the spectral data obtained by imaging, and considering that there is, in these cases, influence of canopy structure, leaf angle, ligneous material and soils — is a recent accomplishment by Clark et al. (2005) and Asner & Martin (2008), done with species of tropical rainforest. However, nothing with this approach was found in the literature for the genus Hevea. Using hyperspectral images from the ProSpecTIR-VS airborne sensor as well as leaf measures taken from the ultraspectral ASD FiedSpec-3 Hi-Res spectrometer, the aim of this research was to verify the remote detection potential of the changes suffered by the clones late in the autumn with the drop of all: average rainfall, average temperature and photoperiod. Indirectly, we also analyze the ability of the data to help discriminating the clones at two dates in autumn. 2. MATERIAL AND METHODS 2.1 Study area and object The study area is located at the coordinates (central) 22? 47' 52.31" S e 47? 6' 26.95" W, at 590m above the sea, at the University of Campinas experimental farm in Paulínia city, in the State of Sáo Paulo, southeast region of Brazil. It presents 1,972.0m?, occupied by two stands of the PB235 clone, as well as, one stand from the GTI clone (Figure 1). The climate for

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