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http://dx.doi.org/10.5532/KJAFM.2012.14.4.161

Geographical Migration of Winter Barley in the Korean Peninsula under the RCP8.5 Projected Climate Condition  

Kim, Dae-Jun (College of Life Science, Kyung Hee University)
Kim, Jin-Hee (National Center for Agro-Meteolorogy, Seoul National University)
Roh, Jae-Hwan (Rice Research Division, National Institute of Crop Science)
Yun, Jin I. (College of Life Science, Kyung Hee University)
Publication Information
Korean Journal of Agricultural and Forest Meteorology / v.14, no.4, 2012 , pp. 161-169 More about this Journal
Abstract
The RCP 8.5 scenario based temperature outlook (12.5 km resolution) was combined with high-definition gridded temperature maps (30 m grid spacing) across the Korean Peninsula in order to reclassify the cold hardiness zone for winter barley, a promising grain crop in the future under warmer winter conditions. Reference maps for the January minimum and mean temperature were prepared by applying the watershed-specific geospatial climate prediction schemes to the synoptic observations from 1981 to 2010 across North and South Korea. Decadal changes in the January minimum and mean temperatures projected by a regional version of RCP8.5 climate change scenario were prepared for the 2011-2100 period at 12.5 km grid spacing and were subsequently added to the reference maps, producing the 30 m resolution temperature surfaces for 9 decades from 2011 to 2100. A criterion for threshold temperature to grow winter barley safely in Korea was applied to the future temperature surfaces and the resulting maps were used to predict the production potential of 3 cultivar groups for the 9 future decades under the projected temperature conditions. By 2020s, hulled barley cultivars could be grown safely at the southern part of North Korea as well as the mountainous Gangwon province. Furthermore, most of South Korean rice paddies will be safe for growing naked barley after harvesting rice. Also, dual cropping systems such as 'winter-barley after rice' could be possible at most of the North Korean rice paddies by 2040s. Additional grain production in North Korea could increase up to 4 million tons per year if dual cropping systems can be fully operated, i.e., winter barley after rice at all lowlands and winter barley after maize or potato at all uplands.
Keywords
RCP 8.5; Winter barley; Cold hardiness zone; North Korea;
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