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Displaying 1 - 5 of 5Estimation of actual evapotranspiration from remote sensing: application in a semiarid region
The potential of remote sensing for the recommendation and monitoring of irrigation practices is irrefutable. GIS have enabled the development of operational spatio-temporal tools for monitoring agricultural activity which can overcome the uncertainty brought about by problems related to water scarcity and increasing drought events. This paper presents an operational methodology for estimating actual evapotranspiration from Landsat images, and its application in the Region of Murcia (Spain).
Introduction to ILWIS GIS tool
ILWIS for Windows is a Windows-based, integrated GIS and Remote Sensing application consisting of: (i) Display of raster and multiple vector maps in map windows; (ii) Display of tables in table windows; (iii) Interactive retrieval of attribute information, (iv) Image processing facilities, (v) Manipulation of maps in a Map Calculator; (vi) Manipulation of tables in a Table Calculator; (vii) GIS analysis tools and (viii) Script language to perform \'batch\' jobs. With Windows, you can start one operation and keep it running while you start one or more additional applications.
Models for assessment of actual evapotranspiration from remote sensing: theoretical basis
In the evaluation of the onset, severity and duration of situations of water stress and droughts, indicators based on processes with intensive use of remote sensing can be used. In the monitoring of agricultural activities as well as the management of water and forest resources, spatio-temporal distributions of information of actual evapotranspiration (ETact) are crucial. This work presents the theoretical aspects of spatio- temporal assessment of ETact process, from remote sensing and meteorological data.
Assessment of vegetation indexes from remote sensing: theoretical basis
Uncertainties in agricultural activities due to the scarcity of water and the increase in droughts could be ameliorated by considering early detection and spatio-temporal characterization of water stress conditions at a regional scale from remote sensing. Theoretical aspects of the spatio-temporal assessment of vegetation indexes related with soil moisture, based on remote sensing and meteorological data are presented.
Application of INSPIRE directive to water management on large irrigation areas
The goal of this paper is to illustrate how INSPIRE can facilitate orientation and advice to calculate the water requirements of crops. These technologies can provide information adapted to specific conditions, updated daily and in an interactive way. These tools permit the integration and management of georeferenced agroclimatic data, soil maps, quality of waters, crop information and technical parameters of a farm.