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http://dx.doi.org/10.7851/ksrp.2022.28.4.019

Change in Impervious Area Rate by Rural Water Districts using EGIS Land Cover Maps  

Jang, Min-Won (Dept. of Agricultural Engineering.Institute of Agriculture & Life Sciences, Gyeongsang National University)
Kim, Hakkwan (Graduate School of International Agricultural Technology, Institutes of Green Bio Science and Technology, Seoul National University)
Publication Information
Journal of Korean Society of Rural Planning / v.28, no.4, 2022 , pp. 19-29 More about this Journal
Abstract
This study aimed to estimate the impervious area rate by rural water districts in 2009 and 2021 and analyze the changes. From the EGIS(Environmental Geographic Information Service) land cover maps, the impervious areas were defined as residential, commercial, industrial, culture·sports·recreational, traffic, public facilities, and greenhouses of land cover classes. For 496 rural water districts excluding the border area with North Korea, the nationwide impervious area rate increased from 5.96% in 2009 to 7.50% in 2021. The average of the top 50 rural water districts increased from 23.4% in 2009 to 27.1% in 2021. E ven for the bottom 50 rural water districts, the average impervious area rate rose from 1.12% in 2009 to 1.40% in 2021. Rural water districts with a high impervious area rate are mainly distributed in metro cities and industrial areas. The contraries are primarily found in Gangwon, Gyeongsang, and Jeolla regions covered with forests and farmlands. Notably, the impervious area rate changed more in the neighboring rural water districts than in large cities, and the rate kept increasing slightly even in rural areas with a low impervious area rate. The findings of this study will help prepare a reasonable alternative for managing the impermeable surface of rural areas for safe and sound rural water cycle.
Keywords
EGIS; impervious area rate; land cover; rural water districts;
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Times Cited By KSCI : 5  (Citation Analysis)
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