Swamp development
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This document describes the development of a WebGIS decision support system (SWAMP) for irrigation water management. SWAMP was developed using ArcGIS Server, SQL database, and JavaScript API. It allows users to monitor farm activities, view field data like yields and water balance components, perform analysis and editing online, and schedule irrigation based on field water demand. SWAMP has advantages like reaching a wider audience, reducing costs, and providing flexible integration and compatibility with future updates.
![PENMAN-MONTEITH
2/26/2015 13
=
. +
+ ( )
+ ( + . )
Where,
ETo Reference Evapotranspiration [mm day-1]
Rn Net radiation at crop surface [MJ m-1 day-1]
G Soil heat flux density [MJ m-2 day-1]
T Mean daily air temperature at 2 m height [属C]
U2 Wind speed at 2 m height [m s-1]
es Saturation vapor pressure [kPa]
ea Actual vapor pressure [kPa]
es-ea Saturation vapor pressure deficit [kPa]
Slope of vapor pressure curve [kPa 属C-1]
Psychometric Constant [kPa 属C-1].](https://image.slidesharecdn.com/swampdevelopment-150226081536-conversion-gate01/85/Swamp-development-13-320.jpg)
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Swamp development
- 1. LOGO Add your company slogan Development of Web Geospatial Decision Support System (DSS) for Irrigation Water Management M. M. Maina B.Eng.,M.Eng.,PgDE, PhD 09092205217, mainam@buk.edu.ng
- 2. OUTLINE Agricultural water management (AWM) Agricultural water resources issues Measurements/estimation of WBM components Performance Indicators of AWM Development of WEBGIS DSS for AWM Uses and Advantage of AWM Web Application SWAMP- soil water assessment and management for paddies 2/26/2015 2
- 3. Agricultural Water management 2/26/2015 3 Agricultural water management: The planned development, distribution and use of water resources to meet predetermined agricultural objectives
- 4. Agricultural Water management Why do we concern about Agricultural water management? One of the biggest concerns for our water-based resources in the future is the sustainability of the current and even future water resource allocation. Climate change Population Increase 2/26/2015 4
- 5. Agricultural Water management Agriculture is said to be the major consumer of our fresh water resources. Nearly 70% of the fresh water resources goes to Agriculture (FAO, 2007). 2/26/2015 5
- 6. Agricultural Water management Researches in Agricultural fields have shown that most of the agricultural water losses occur in the field. Study of the Paddy field water balance model reveals how much water is loss during irrigation. 2/26/2015 6
- 7. Paddy Water Balance Model 2/26/2015 7 A water balance model for paddy is developed primarily based on the principle of conservation of mass: soilwater within the root zone. The water balance for paddy is different from that of field crops because paddy requires standing water in the field during most of its growth period. Therefore, the water balance components includes the standing water depth on the field.
- 9. Paddy Field Water Balance Model SWD = IRR + ER ET SP DR + GW
- 10. Water Balance Model 2/26/2015 10 = + 咋 + (1) Where; SWD = field Standing water depth (mm) IRR = Irrigation (mm) ER = Effective rainfall (mm) SP = Seepage percolation (mm) DR = Drainage and Runoff (mm) GW = Ground water influence (mm)
- 11. ET AND SP MEASUREMENT 2/26/2015 11
- 12. ET ESTIMATION USING WEATHER DATA 2/26/2015 12
- 13. PENMAN-MONTEITH 2/26/2015 13 = . + + ( ) + ( + . ) Where, ETo Reference Evapotranspiration [mm day-1] Rn Net radiation at crop surface [MJ m-1 day-1] G Soil heat flux density [MJ m-2 day-1] T Mean daily air temperature at 2 m height [属C] U2 Wind speed at 2 m height [m s-1] es Saturation vapor pressure [kPa] ea Actual vapor pressure [kPa] es-ea Saturation vapor pressure deficit [kPa] Slope of vapor pressure curve [kPa 属C-1] Psychometric Constant [kPa 属C-1].
- 17. IRRIGATION PERFORMANCE INDICATORS WPI = ヰ (ゐ) 稲 ю ( ) (kg/m3) 542/26/2015 Water Productivity Index (WPI)
- 18. IRRIGATION PERFORMANCE INDICATORS Water Use Efficiency (WUE) WUE = 獅咋 + x 100% 2/26/2015 18 Water Use Efficiency (WUE)
- 19. DEVELOPING WEBGIS DSS 2/26/2015 19 Soil Water Assessment and Management for paddies (SWAMP 2.0) is a WebGIS decision Support system for irrigation management. It is an online, interactive, and real-time*. It was developed using ArcGIS for Server, MS SQL Database and ArcGIS Viewer for flex based on JavaScript API
- 25. Advantages and Uses of SWAMP SWAMP has many advantages amongst but not limited to: 1. Reach wider audience and stakeholders 2. All farm Information can be spread instantly 3. Cost effective 3. Reduce software installation, support and maintenance 4. Need not to be GIS professional to use it 5. Flexible for DBMS integration and presentation 6. Easy to use and maintain compatibility with the future development 7. Cut software costs 2/26/2015 25
- 27. Operations of SWAMP Once the web application loads, the Attribute Table widget checks for any feature layer feature(s) in the current extent and populates the attribute table with its feature(s). Aside from providing a tabular display of the layer's data, the features can be selected, deselected, and zoomed-to by interacting with the attribute table. If these feature layers are editable, the corresponding feature attributes will also be editable. In addition, the fields can be sorted by clicking on its heading 2/26/2015 27
- 28. Operations of SWAMP Contd. Paddy water balance model can be displayed and scheduling can be based on field demand Analysis and editing can be carried out online Area and length measurement can be done easily and precisely Farm Activities can be monitored online Yields and yield components can be viewed in the form of charts and tables. 2/26/2015 28
- 30. LOGO THANK YOU !