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首页> 外文期刊>Turkish Journal of Agriculture & Forestry >Long-term water balance of a bare soil with slope in Chuncheon, South Korea
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Long-term water balance of a bare soil with slope in Chuncheon, South Korea

机译：韩国春川市裸露土壤的长期水分平衡

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摘要

Water balance components of a bare soil with slope varying from 5% to 30% in Chuncheon, South Korea, were simulated using the E-DiGOR model, which proposed an interactive way to quantify runoff, drainage, soil water storage, and evaporation. Daily computations were carried out during the period of 1980 to 2009 for the identified soil-topography-climate combination. A strong correlation between measured pan evaporation and calculated potential soil evaporation was observed (R~2- 63.8%, P < 0.01) basedon the monthly data of the past 30 years (hereafter 'long-term'). When examining long-term dynamics of simulated soil evaporation, monthly mean potential and actual soil evaporations ranged from 9.1 and 9.0 mm in December to 110.5 and 75.2 mm in June and July, respectively. The ratio of actual to potential soil evaporation (EJEJ had a close linkage with soil water content. The higher the soil water amount, the greater the E IE ratio was. A nonlinear relationship between rainfall and surface runoff wasobtained at a given slope. Excess surface runoff and subsurface flow (percolation + interflow) occurred throughout the rainy months from July to September, with peaks in July. The ratio of direct surface runoff to rainfall increased with the natural logarithm of slope. The long-term mean annual direct surface runoff and subsurface flow at the maximum slope were 408.1 and 437.6 mm, respectively. Furthermore, mean annual surface runoff from the slope of 30% was approximately 2 times higher than that fromthe slope of 5%.
机译：使用E-DiGOR模型对韩国春川地区坡度从5％到30％的裸露土壤的水平衡成分进行了模拟，该模型提出了一种量化径流，排水，土壤水分存储和蒸发的交互式方法。在1980年至2009年期间，对确定的土壤-地形-气候组合进行了每日计算。根据过去30年的月度数据（以下称“长期”），观测到的蒸发皿蒸发量与计算得出的潜在土壤蒸发量之间具有很强的相关性（R〜2- 63.8％，P <0.01）。当检查模拟土壤蒸发的长期动态时，月平均潜力和实际土壤蒸发的范围分别从12月的9.1和9.0毫米到6月和7月的110.5和75.2毫米。土壤实际蒸发量与潜在土壤蒸发量之比（EJEJ与土壤含水量密切相关。土壤含水量越高，E IE比越大）。在给定坡度下，降雨与地表径流之间存在非线性关系。 7月至9月的整个雨季都发生了径流和地下渗流（渗流+互渗），7月达到峰值，直接表面径流与降雨的比率随坡度的自然对数增加，长期平均年直接表面径流和最大坡度的地下径流分别为408.1和437.6 mm，此外，坡度为30％的年平均地表径流比坡度为5％的年均高约2倍。

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