Irrigation Water Consumption Through Remote Sensing. Comparison At Different Scales In Zhanghe, Irrigation System, China
Author(s)
Y.Chemin, T.Alexandridis
Abstract
Irrigation water consumption through remote
sensing. Comparison at different scales in
Zhanghe irrigation system, China
T. Alexandridis & Y. Chemin
International Water Management Institute, Sri Lanka
Abstract
Despite being particularly essential for improving the productivity of agriculture,
water management in large-scale irrigation systems is often lacking of even the
basic information. Techniques for estimation of the water consumption have
recently been developed using the low-cost satellite images covering large
agricultural areas. Appealing as it may be, the new techniques raise the question
of accuracy, especially in the context of the measurement scale. Comparison of
different scales of images and their influence in the calculation of the global
volumes of water evaporated is giving critical information on the applicability of
these advanced tools in a water management perspective.
The Surface Energy Balance Algorithm for Land (SEBAL), calculating
evaporation o
Keywords
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