TAILIEUCHUNG - Sensitivity analysis of the evaporation module of the E-DiGOR model

Sensitivity analysis of the soil-water-evaporation module of the E-DiGOR (Evaporation and Drainage investigations at Ground of Ordinary Rainfed-areas) model is presented. The model outputs were generated using measured climatic data and soil properties. The first-order sensitivity formulas were derived to compute relative sensitivity coefficients. | Research Article Turk J Agric For 34 (2010) 497-507 © TÜBİTAK doi: Sensitivity analysis of the evaporation module of the E-DiGOR model Mehmet AYDIN1,*, Suzan Filiz KEÇECİOĞLU2 1 Department of Soil Science, Faculty of Agriculture, Mustafa Kemal University, TR-31040, Hatay - TURKEY 2Technical Training College of Antakya, Mustafa Kemal University, TR-31040, Hatay - TURKEY Received: Abstract: Sensitivity analysis of the soil-water-evaporation module of the E-DiGOR (Evaporation and Drainage investigations at Ground of Ordinary Rainfed-areas) model is presented. The model outputs were generated using measured climatic data and soil properties. The first-order sensitivity formulas were derived to compute relative sensitivity coefficients. A change in the net solar radiation significantly affected potential evaporation from bare soils estimated by the Penman-Monteith equation. The sensitivity coefficients were positive, with a mean value of . The sensitivity of potential soil evaporation to soil heat flux was lower during the summer months and higher during the winter. The gradient of saturated vapour pressure–temperature curve increased or decreased the potential evaporation rates because of the occurrence of the gradient variable in both the numerator and denominator of the equation. Increases in the vapour pressure deficit increased the evaporation and its effect was more pronounced in the winter. In the case of aerodynamic resistance, the coefficients were constantly negative, and became more negative in the winter, which means a negative correlation between the input and output. In Aydın’s equation, the dependent variable (actual soil evaporation) was initially very sensitive to a change in the water potential of a wet soil. The sensitivity decreased progressively during the drying period. The coefficients related to the absolute values of soil water potential were constantly negative, with a mean value of –. The .

• Nông nghiệp
• E DiGOR model
• Sensitivity analysis
• Soil evaporation
• Ordinary Rainfed areas
• Soil water potential
• Soil properties
• Soil removal
• Soil health
• Soil properties cultivating sesame
• Organic amendment
• Surface soil removal
• Sandy loam
• Physical properties and maize
• Soil amendments on physical properties
• Physical properties of soil
• Soil in maize
• Chemical properties of soil Chaka
• Chemical properties
• Soil Chaka
• Chemical properties of soil in chaka block
• Soil fertility
• French bean
• Nutrient uptake
• Aluminium stress soil condition
• Soil properties and French bean
• Effect of lime on soil chemical properties
• Organic on soil chemical properties
• Inorganic fertilizers on soil chemical properties and yield of chilli
• CM while total available N
• Treatments with organic manure
• Climate change on soil chemical
• Biological properties
• Soil like pH
• Physical properties like porosity
• Aonla plantation
• Physio chemical properties of soil
• Inter cropping systems
• Integrated nutrient management
• Salt affected soil
• Soil properties and yield of wheat
• Integrated nitrogen management
• Soil physico chemical properties
• Rhizobium on physico chemical properties
• Soil in field pea
• Field pea
• Physical analysis of soil
• Soil in Pea crop
• Soil heath card
• Soil testing kit
• Micro nutrients
• Soil chemical properties
• Granulated liming material paddy
• Acid soil
• Acid soil of Bramhavara
• Yield of paddy in acid soil
• Granulated liming material
• Inorganic bio fertilizers
• Soil physicochemical properties
• Rainfed maize wheat cropping system
• Organic on soil physicochemical properties
• Inorganic on soil physicochemical properties
• Organic carbon
• Agroclimatic zones
• Soil properties in rice soils
• Soil available zinc
• Soil properties and yield
• Yield of rice and chemical properties
• Chemical properties of sodic soil
• Sodic soil
• Black gram
• Poultry manure
• Phosphorus and soil properties
• Physico chemical properties of soil
• Soil structure
• Soil physical
• Soil to improve the soil health
• Different geotextile in soil
• Long term effect
• Physical and chemical property of soil
• Soil properties in a Vertisol
• Inorganic nutrient management practises
• Acid soil of nagaland
• Properties of acid soil
• Chemical composition of maize
• Cropping system
• Soil quality
• Enzymatic activities in calcareous soil
• Calcareous soil
• Cropping systems on soil properties
• Physico chemical properties
• Fertilizer recommendations
• Udham Singh Nagar
• Soil properties in molisols
• Different levels of NPK
• Molybdenum on soil physico chemical properties
• Chemical properties of black gram
• Chemiscal properties
• Illicium verum Hook
• Soil depths
• Soil organic carbon
• Available zinc status
• Relation to soil properties
• Red and lateritic Soils
• Narayanpur block Mirzapur
• Available macro nutrient status
• Relationship with soil physicochemical properties
• Micro nutrient properties
• Micro nutrient properties of soil profiles
• Soil profiles
• Slightly conditioned by topography