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http://dx.doi.org/10.17663/JWR.2017.19.1.016

Comparative Evaluation of Hydrological Cycle in South and North Korea using a Land Surface Model  

Song, Sung-uk (School of Civil, Environmental and Architectural Engineering, Korea University)
Lee, Jinwook (School of Civil, Environmental and Architectural Engineering, Korea University)
Cho, Eunsaem (School of Civil, Environmental and Architectural Engineering, Korea University)
Yoo, Chulsang (School of Civil, Environmental and Architectural Engineering, Korea University)
Publication Information
Journal of Wetlands Research / v.19, no.1, 2017 , pp. 16-29 More about this Journal
Abstract
It is known that large-scale deforestation has occurred in North Korea due to economic failures since the 1990s, and this is expected to greatly change the characteristics of the hydrological cycle. In this study, hydrological cycle simulation was carried out for the period of about 30 years from 1981 to 2013 for the entire Korean peninsula using the VIC model, a land surface hydrology model. The simulation results are summarized as follow. First, the runoff ratio is 55%~70% in South Korea and 38~56% in North Korea. In particular, it is worth noting that despite the small runoff ratio, the variation is about 28% larger than the South Korea's 15%. The rate of evapotranspiration was larger than that of South Korea. That is, the rate of evapotranspiration in South Korea is 20~35% and in North Korea it is 25~46%. However, the rate of change was 21% in the case of North Korea and slightly larger than 15% in South Korea. Third, South Korea has an average of 34% in soil moisture and 27% in North Korea. However, unlike the simulated results of the runoff ratio and the evapotranspiration rate, the difference in the variation of soil moisture in South Korea and North Korea over the entire period was similar with 8%. As a result, we can confirm that the difference of hydrological cycle characteristics between South Korea and North Korea has been increased since the 1990s, when the forest destruction of North Korea became serious. In the case of South Korea, there is little difference in the hydrological cycle characteristics. In North Korea, however, there is a distinct difference, which is also a result reflecting the difference in the effects of forest destruction.
Keywords
Hydrologic Cycle; VIC Model; Water Budget Analysis;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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