tailieunhanh - EVAPOTRANSPIRATION – REMOTE SENSING AND MODELING

In order to evaluate the status of damage caused by the stresses on the plants growing process before visible damage is noticed, we have followed the evolution of the Chl content in the plant leaves using the Fr/FFr chlorophyll fluorescence ratio. The absolute emission signal of leaves can vary from sample to sample due to small differences such as excitation and sensing angles of the fluorescence, and the roughness and scattering properties of the leaf surface. Thus, the absolute fluorescence usually varies to a large extent than the fluorescence ratio. The fluorescence ratio turns out to produce much lower variations from leaf to leaf, resulting in a. | EVAPOTRANSPIRATION -REMOTE SENSING AND MODELING Edited by Ayse Irmak Evapotranspiration - Remote Sensing and Modeling Edited by Ayse Irmak Published by InTech Janeza Trdine 9 51000 Rijeka Croatia Copyright 2011 InTech All chapters are Open Access distributed under the Creative Commons Attribution license which allows users to download copy and build upon published articles even for commercial purposes as long as the author and publisher are properly credited which ensures maximum dissemination and a wider impact of our publications. After this work has been published by InTech authors have the right to republish it in whole or part in any publication of which they are the author and to make other personal use of the work. Any republication referencing or personal use of the work must explicitly identify the original source. As for readers this license allows users to download copy and build upon published chapters even for commercial purposes as long as the author and publisher are properly credited which ensures maximum dissemination and a wider impact of our publications. Notice Statements and opinions expressed in the chapters are these of the individual contributors and not necessarily those of the editors or publisher. No responsibility is accepted for the accuracy of information contained in the published chapters. The publisher assumes no responsibility for any damage or injury to persons or property arising out of the use of any materials instructions methods or ideas contained in the book. Publishing Process Manager Dragana Manestar Technical Editor Teodora Smiljanic Cover Designer InTech Design Team Image Copyright Selyutina Olga 2011. Used under license from First published December 2011 Printed in Croatia A free online edition of this book is available at Additional hard copies can be obtained from orders@ Evapotranspiration - Remote Sensing and Modeling Edited by Ayse Irmak p. cm. ISBN