Your search found 2 records
1 Hong, E.-M.; Choi, J.-Y.; Nam, W.-H.; Kim, J.-T. 2016. Decision support system for the real-time operation and management of an agricultural water supply. Irrigation and Drainage, 65(2):197-209. (Special issue: Selected Papers of the ICID Gwangju Congress). [doi: https://doi.org/10.1002/ird.1935]
Agriculture ; Water supply ; Water management ; Decision support systems ; Irrigation water ; Canal regulation techniques ; Information and Communication Technologies (ICTs) ; Water levels ; Monitoring ; Water delivery ; Water requirements ; Irrigation scheduling ; Models ; Irrigation systems / South Korea / Dongjin River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H047563)
(0.90 MB)
Agricultural uses are responsible for approximately 48% of the total annual water use in South Korea. While approximately 70% of the annual rainfall is received during the summer season, most of the agricultural water is utilized from May to June. Therefore, irrigation facilities including reservoirs, canals and pumps were installed to efficiently manage agricultural water. Efficient operation of irrigation systems is important for sustainable irrigated agriculture, which is undermined due to the low water efficiency of the irrigation systems. Irrigation water management using web-based decision support systems is necessary to resolve water efficiency problems. In this study, automatic water gauges were installed at the main and secondary irrigation canals in the Dongjin River Basin, South Korea. The water levels in each canal were monitored and the irrigation water supply calculated. An irrigation model considering intermittent irrigation was developed to compare the estimated irrigation demands with the actual supplies for decision-making and demand strategies. Using this model and water-level data, a risk-based decision support system for the operation and management of agricultural water was developed and evaluated. Using this system. it is possible to optimally manage irrigation water and to make plans for efficient agricultural water operation and management.
2 Yassen, A. N.; Nam, W.-H.; Hong, E.-M.. 2020. Impact of climate change on reference evapotranspiration in Egypt. Catena, 194:104711. (Online first) [doi: https://doi.org/10.1016/j.catena.2020.104711]
Climate change ; Evapotranspiration ; Irrigation water ; Water resources ; Water management ; Water requirements ; Meteorological stations ; Weather data ; Spatial distribution / Egypt / Nile Delta
(Location: IWMI HQ Call no: e-copy only Record No: H049957)
(4.05 MB)
Egypt is a country that is vulnerable to many of the sustainability challenges and climate change effects to which all countries around the world are struggling to respond, and the United Nations is warning that Egypt could run out of the water by the year 2025. Reference evapotranspiration is the first step in estimating crop water requirements and irrigation water management. A better understanding of trends in reference evapotranspiration is crucial for scientific management of water resources in arid and semi-arid regions. The aim of this study is to identify the spatiotemporal of annual and monthly reference evapotranspiration changes in Egypt, as evidenced by spatial distribution and temporal trends. The results showed that significant changes in spatial distribution of reference evapotranspiration have occurred in the last 35 years beginning in the 1980s. The southeastern regions, the older agricultural lands in the Nile Delta and valley, as well as the northwestern regions were most affected regions. However, the western desert showed the lowest impact from climate change. The winter season from November to February showed the lowest impact from climate change, while during the summer season, the highest significant differences occurred, especially from June to October. The last five years (2013–2017) showed a significant decrease from the previous 5 years (2008–2012) but still show a significant increase from previous periods of time (1983–2007). Hence, the western desert is more suitable for agricultural expansion. Furthermore, agricultural and irrigation activities during the summer season have to change respond to the impact of climate change on water resources management.
Powered by DB/Text WebPublisher, from
