A Hydro-environmental Model Considering Nitrogen Dynamics in Surface Zone for Analysis of Groundwater Nitrate-nitrogen Contamination
スポンサーリンク
概要
- 論文の詳細を見る
A cell-based distributed hydro-environmental model is developed which enables to analyze groundwater nitrate-nitrogen (N-N) contamination in rural areas, with well-coordinated incorporation of the water quality tank submodel for surface zone and the nitrate-nitrogen transport submodel for unconfined groundwater aquifer into the previously developed hydrologic model (Takeuchi et al., 2010). Cell-based building of all component submodels allows us to mesh the problem domain with unstructured cells of triangular shape, and therefore renders it possible to reflect in a refined fashion a variety of land-use practices in an analysis of the problem. The solutions based on reality, associated with groundwater flow and quality, can thus be obtained at a high (or field-plot-scale) resolution. It is also of great advantage that quantities of the hydro-environmental components of interest, such as surface water discharge, ground-water recharge, surface nitrogen discharge, and N-N leaching, can be obtained cell by cell or land-use by land-use. Application of the model to a real rural area having diverse terrains testifies to its satisfactory performance in a global sense. The simulated N-N concentrations of the groundwater vary in the ranges of the observed concentrations. The model also well reproduces the observed realities that the N-N concentration is high in upland areas such as alluvial fan and river terrace, while low in the lowland areas such as delta and valley floor, and is lowered in the irrigation season. It is thus considered that the model presently developed is useful for simulating and assessing the process and geographic distribution of groundwater N-N contamination in rural areas where fertilizing-induced groundwater contamination is a special concern.
著者
-
Imagawa Chie
Graduate School Of Agriculture Kyoto University
-
Maeda Shigeya
Graduate School Of Agriculture Kyoto University
-
Maeda Shigeya
Graduate School Of Agricultural Science Kyoto University
-
Chono Shunsuke
Graduate School Of Agriculture Kyoto University
-
Kawachi Toshihiko
Graduate School Of Agricultural Science Kyoto University
-
Kawachi Toshihiko
Graduate School Of Agriculture Kyoto University
-
Takeuchi Junichiro
Graduate School Of Agriculture Kyoto University
-
Takeuchi Junichiro
Graduate School Of Agricultural Science Kyoto University
-
Buma Natsuki
Graduate School of Agriculture, Kyoto University
-
Buma Natsuki
Graduate School Of Agriculture Kyoto University
-
Kawachi Toshihiko
Graduate School Of Agricultural Kyoto University
関連論文
- Infiltration Process in Rainfed Rice Field Soil of Ghanaian Inland Valley
- An Inverse Method to Estimate Soil Hydraulic Properties in Saturated-unsaturated Groundwater Flow Model
- Case study: Hydraulic modeling of runoff processes in Ghanaian inland valleys
- Dynamics of Nonpoint Source Pollutant Loadings from Agricultural Watershed : A Case Study in Paddy-farming Area with 122 Drainage Water Outfalls Exactly Identifiable
- Model-based Optimal Design of Land Use Arrangement for Environmentally Sound Watershed Management
- Entropy-based Assessments of Monthly Rainfall Variability
- Optimal management of waste loading into a river system with nonpoint source pollutants
- Hybrid Runoff Model Using 1-D Richards Equation and Linear Output Generator
- Comparison of Rainfed and Potential Yields of Maize and Cowpea on the Vertisols of Ghana
- Optimal Control of Interconnected Irrigation Tanks System
- Flood Regulation in Reservoir Using Robust Servo Controller
- Robust Control of Reservoir Release Discharge Using Precipitation Data
- Modelling Steady Flow in Open Channel Networks with Sudden Transitions
- Identification of Drifting Rainfall Distribution
- An Irrigation Tank for Harvesting Rainwater in Semi-arid Savannah Areas : Design and Construction Practices in Ghana/West Africa
- Experimental Studies on Effects of Discharge, Fall Height, and Water Depth of Downstream Tank in Aerated Flow at Weir
- Diagnostic appraisal of water quality and pollution control realities in Yasu River using GIS-aided epsilon robust optimization model
- Entropy-based Assessments of Monthly Rainfall Variability
- Multiobjective Optimization of Pollutant Loads from Nonpoint Sources in Watershed Considering Surface and Subsurface Flows
- Optimal Allocation of Pollutant from Non-point Sources in Watershed
- GIS-Aided Zoning of Natural Groundwater Recharge Potential in Yasu River Basin, Japan
- Runoff Simulation in Small Agricultural Watershed of Vertic Inceptisols of Indian Soils
- Runoff Simulation in Small Agricultural Watershed of Vertic Inceptisols of Indian Soils
- Optimal Allocation of Irrigation Water by Balancing Water Use and Food Production
- Review on Groundwater Nitrate Contamination: Causes, Effects and Remedies : A Guideline for Efficient Management Strategies
- GA-designed Fuzzy Rule-based System for Parameter Estimation of Distributed Rainfall-runoff Model Considering Various Cell Characteristics
- Identification and Uncertainty Assessment of Model Parameters of Distributed Runoff Model Using Bayesian Inference
- Methods to Identify Non-Point Contaminant Flux to Groundwater : Comparison of Properties of ANN, LGA and IGA methods
- Groundwater Flow and Solute Transport Simulation for Aquifer Management in Comilla Region, Bangladesh
- Determination of Well Efficiency Using Genetic Algorithm
- Entropy Aspects of Runoff and Flow Regulations in a River Basin
- Water pollution control in stream network by finite element and linear programming method
- Robust optimization model for water quality management in river systems
- A Hydro-environmental Model Considering Nitrogen Dynamics in Surface Zone for Analysis of Groundwater Nitrate-nitrogen Contamination
- Estimation of Relative Pollutant Loads in a Lake Using Neural Network
- Estimation of Relative Pollutant Loads in a Lake Using Neural Network
- Assessment of Groundwater Quality for Irrigation Use in Jamalpur and Sherpur Districts of Bangladesh
- Evaluation of Rainfall Characteristics Using Entropy
- Instructions to Authors (I) : Preparation of English Manuscripts
- Instructions to Authors (I) : Preparation of English Manuscripts
- Instructions to Authors (I) : Preparation of English Manuscripts
- Instructions to Authors (I) : Preparation of English Manuscripts
- Instructions to Authors (I) : Preparation of English Manuscripts
- Instructions to Authors (I) : Preparation of English Manuscripts
- Instructions to Authors (I) : Preparation of English Manuscripts
- Instructions to Authors (I) : Preparation of English Manuscripts
- Groundwater Flow Simulation and Tubewell Zoning in Comilla Region, Bangladesh
- Irrigation Indicators of Land Forms on the Vertisols of Ghana
- Instructions to Authors (I) : Preparation of English Manuscripts
- Village-level Impounding : An Urgent Need for Sub-Saharan Countries
- A refined hydro-environmental watershed model with field-plot-scale resolution
- A physically based FVM watershed model fully coupling surface and subsurface water flows
- A stochastic model for behaviour of fish ascending an agricultural drainage system
- Fuzzy optimization model for integrated management of total nitrogen loads from distributed point and nonpoint sources in watershed
- A distributed hydro-environmental watershed model with three-zoned cell profiling
- A Series of Studies on Finite Element Modeling of Hydraulic and Environmental Problems
- Stochastic multiobjective optimization model for allocating irrigation water to paddy fields
- Integrated field- and model-based study of hydro-environmental aspects of a small, endangered wetland in eastern Hokkaido,Japan
- Inverse Modeling of Mass-conservative Numerical Model for Variably Saturated Seepage Flow
- A 2-D and 3-D Composite Dimensional Fully Coupled Surface and Subsurface Flow Model
- Application of One-Dimensional Shallow Water Model to Flows in Open Channels with Bends
- Fuzzy Comprehensive Evaluation of Water Quality at Monitoring Points : Application to Lake Biwa