Biophysical parameters in a wheat producer region in southern Brazil

Janice F. Leivas; Antonio Heriberto de C. Teixeira; Ricardo G. Andrade; Daniel de C. Victoria; Edson L. Bolfe; Caroline R. Cruz

doi:10.1117/12.2067477

21 October 2014 Biophysical parameters in a wheat producer region in southern Brazil

Janice F. Leivas, Antonio Heriberto de C. Teixeira, Ricardo G. Andrade, Daniel de C. Victoria, Edson L. Bolfe, Caroline R. Cruz

Author Affiliations +

Proceedings Volume 9239, Remote Sensing for Agriculture, Ecosystems, and Hydrology XVI; 923924 (2014) https://doi.org/10.1117/12.2067477
Event: SPIE Remote Sensing, 2014, Amsterdam, Netherlands

Abstract

Wheat (Triticum aestivum) is the second most produced cereal in the world, and has major importance in the global agricultural economy. Brazil is a large producer of wheat, especially the Rio Grande do Sul state, located in the south of the country. The purpose of this study was to analyze the estimation of biophysical parameters – evapotranspiration (ET), biomass (BIO) and water productivity (WP) – from satellite images of the municipalities with large areas planted with wheat in Rio Grande do Sul (RS). The evapotranspiration rate was obtained using the SAFER Model (Simple Algorithm for Retrieving Evapotranspiration) on MODIS (Moderate Resolution Imaging Spectroradiometer) images taken in the agricultural year 2012. In order to obtain biomass and water productivity rates we applied the Monteith model and the ratio between BIO and ET. In the beginning of the cycle (the planting period) we observed low values for ET, BIO and WP. During the development period, we observed an increase in the values of the parameters and decline at the end of the cycle, for the period of the wheat harvest. The SAFER model proved effective for estimating the biophysical parameters evapotranspiration, biomass production and water productivity in areas planted with wheat in Brazilian Southern. The methodology can be used for monitoring the crops' water conditions and biomass using satellite images, assisting in estimates of productivity and crop yield. The results may assist the understanding of biophysical properties of important agro-ecosystems, like wheat crop, and are important to improve the rational use of water resources.

Citation Download Citation

Janice F. Leivas, Antonio Heriberto de C. Teixeira, Ricardo G. Andrade, Daniel de C. Victoria, Edson L. Bolfe, and Caroline R. Cruz "Biophysical parameters in a wheat producer region in southern Brazil", Proc. SPIE 9239, Remote Sensing for Agriculture, Ecosystems, and Hydrology XVI, 923924 (21 October 2014); https://doi.org/10.1117/12.2067477

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Biological research

Earth observing sensors

Agriculture

Satellites

Satellite imaging

MODIS

Algorithm development

Show All Keywords

Keywords/Phrases

Search In:

Publication Years