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분야 : 자연과학 > 수학
발행기관 : 충남대학교 농업과학연구소
간행물정보 : Korean Journal of Agricultural Science, 2019 pp.~12 (총 13pages)
 
 
목차
부제 :
Abstract
Introduction
Conclusion
References
 
 
영문초록
The aim of this study was to identify land resources because food production and supply in North Korea have been at risk due to variations in its seasonal climate. More than threefifths of the soils are locally derived from the weathering of granitic rocks or various kinds of schists developed from crystalline rocks. Well-developed reddish brown soils derived from limestone are found in the North Hwanghae province and in the southern part of the South Pyeongan province. Additionally, a narrow strip of similarly fertile land runs through the eastern seaboard of the Hamgyong and Kangwon Provinces. The loss of clay particles and organic matter are major causes of degradation in the soil physical and chemical properties in North Korea. 75% of the areas converted from forests became croplands, and 69% of the land converted to croplands came from forests. The net forest loss was quite small from the 1990s to the 2000s. However, deforestation in areas with a slightly lower elevation and gentler slope between 1997 and 2014 led to severe soil erosion resulting in a drastic change in the physical and chemical properties of the soil which influenced cropland stability and productivity. Therefore, the drastic changes in land cover as well as in the physical and chemical properties of the soil caused by various geographical features have seriously influenced the productivity of crops in North Korea.
 
 
land cover, land uses, North Korea, soil erosion, deforestation
 
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