Search results for " Aquatic Science"

showing 2 items of 92 documents

Application of EMI and FDR Sensors to Assess the Fraction of Transpirable Soil Water over an Olive Grove

2018

Accurate soil water status measurements across spatial and temporal scales are still a challenging task, specifically at intermediate spatial (0.1–10 ha) and temporal (minutes to days) scales. Consequently, a gap in knowledge limits our understanding of the reliability of the spatial measurements and its practical applicability in agricultural water management. This paper compares the cumulative EM38 (Geonics Ltd., Mississauga, ON, Canada) response collected by placing the sensor above ground with the corresponding soil water content obtained by integrating the values measured with an FDR (frequency domain reflectometry) sensor. In two field areas, characterized by different soil clay conte…

lcsh:Hydraulic engineeringSoil texture0208 environmental biotechnologyGeography Planning and Developmentfraction transpiration soil waterSoil science02 engineering and technologyAquatic ScienceBiochemistryrelative transpirationEM38; FDR sensor; Fraction transpiration soil water; Olive grove; Relative transpiration; Sap flow; Biochemistry; Geography Planning and Development; Aquatic Science; Water Science and Technologylcsh:Water supply for domestic and industrial purposessap flowEMIlcsh:TC1-978CalibrationReflectometrySubsurface flowTemporal scalesolive grove; sap flow; relative transpiration; FDR sensor; EM38; fraction transpiration soil waterTranspirationWater Science and TechnologyPlanning and Developmentlcsh:TD201-500GeographyEM38FDR sensor04 agricultural and veterinary sciencesolive grove020801 environmental engineeringSoil water040103 agronomy & agriculture0401 agriculture forestry and fisheriesWater
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Artificial Neural Networks for Predicting the Water Retention Curve of Sicilian Agricultural Soils

2018

Modeling soil-water regime and solute transport in the vadose zone is strategic for estimating agricultural productivity and optimizing irrigation water management. Direct measurements of soil hydraulic properties, i.e., the water retention curve and the hydraulic conductivity function, are often expensive and time-consuming, and represent a major obstacle to the application of simulation models. As a result, there is a great interest in developing pedotransfer functions (PTFs) that predict the soil hydraulic properties from more easily measured and/or routinely surveyed soil data, such as particle size distribution, bulk density (&rho

lcsh:Hydraulic engineeringneural networkSoil textureWater retention curvesoil water retention curve0208 environmental biotechnologyGeography Planning and DevelopmentSoil science02 engineering and technologyAquatic ScienceSiltBiochemistryAkaike criterion; Neural network; Soil water retention curve; Van Genuchten function; Biochemistry; Geography Planning and Development; Aquatic Science; Water Science and Technologyvan Genuchten functionlcsh:Water supply for domestic and industrial purposesHydraulic conductivityPedotransfer functionlcsh:TC1-978Settore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliWater Science and TechnologyPlanning and Developmentlcsh:TD201-500GeographySoil organic matter04 agricultural and veterinary sciences020801 environmental engineeringAkaike criterionSoil water040103 agronomy & agriculture0401 agriculture forestry and fisheriesEnvironmental scienceAkaike information criterionWater
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