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The Study on Quantifying and Evaluating for the Functions of Flood Control and Fostering Water Resources in Agriculture  

Seo, Myung-Chul (Agro-Environmental Multifunction Assessment Team, National Institute of Agricultual Science & Technology, RDA)
Kang, Ki-Kyung (Agro-Environmental Multifunction Assessment Team, National Institute of Agricultual Science & Technology, RDA)
Hyun, Byung-Geun (Agro-Environmental Multifunction Assessment Team, National Institute of Agricultual Science & Technology, RDA)
Yun, Hong-Bae (Agro-Environmental Multifunction Assessment Team, National Institute of Agricultual Science & Technology, RDA)
Eom, Ki-Cheol (Agro-Environmental Multifunction Assessment Team, National Institute of Agricultual Science & Technology, RDA)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.41, no.2, 2008 , pp. 143-152 More about this Journal
Abstract
In order to share the understanding agricultural multifunctionality with people, we carried out quantification and monetary evaluation for controlling flood and fostering water resources function in paddy and upland farming in Korea. The amount of water controlling flood and fostering water resources function in paddy farming was much greater than that in upland. The quantification of flood control function could be estimated by sum of the height of dike and water infiltrated during the flooding periods in paddy farming, and water excepting runoff water from precipitation at flooding time in upland farming. As results of estimation of flood control function, the amounts of water controlling flood have been evaluated as $294mm\;year^{-1}$ in paddy farming and $72.6mm\;year^{-1}$ upland farming, and was calculated 3.71 billion MT on a nation basis in 2006. When it was carried out monetary estimation as the cost of dam construction and the depreciation expense by using replacement cost method, flood control functions in paddy and upland were evaluated as 44,338.9 and 7,221.5 billion won, respectively. Comparing with previous reports, monetary value was analyzed much to increase because of rising price cost recently. Fostering water resource functions were also quantified in paddy and upland farming as the amount of water keeping and infiltrating water during the cultivation. In the basis of estimation model, it was showed that paddy and upland farming had been estimated to have $414.28mm\;year^{-1}$, $18.7mm\;year^{-1}$, respectively. They were also calculated to 4.49 and 0.137 billion MT on a nation basis in 2006, respectively. The economic values of fostering water resources function in paddy and upland farming were also estimated to 1,769.4 and 52.8 billion won, respectively, as replacing the amount of water to the cost of drinking water in 2006. There were differences by much to the amounts of controlling flood function and fostering water resource between paddy and upland farming. It means that paddy farming more play an important role in environment than upland farming in Korea.
Keywords
Multifunctionality; Flood control; Fostering water resources; Replacement cost method;
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