Ever frozen ground prevents water from infiltrating to deep layer, which increases the depth of runoff and intensity of transpiration.
同时多年冻土抑制水分向深层土壤的下渗，增加了径流深度和蒸腾发强度。
The parameters of the NAM hydrological model are researched on affecting the depth of runoff volume, flood peak flux and flood peak appearance time.
利用灰色系统关联分析方法来研究NAM模型参数对模型模拟径流深、洪峰流量和峰现时间的影响。
The effect of the parameters of the NAM hydrological model on the depth of runoff volume, flood peak discharge and flood peak appearance time was researched by GRA (grey relation analysis).
利用灰色系统关联分析方法来研究NAM模型参数对模型模拟径流深、洪峰流量和峰现时间的影响。
It is necessery that the total consumptive use of water in the rotation period is equal to the total effective precipitation(pre- cipitation minus runoff depth)in the loess hilly region.
在黄土丘陵区要求林草与农作物地在轮作周期内的总耗水量与有效雨量（降雨量与径流深之差）持平。
The results showed the ability of simulated data varied by different GCMs. It led to the difference of estimated runoff depth and sediment discharge.
结果表明：不同大气环流模式对该流域降水量模拟结果不同，导致未来气候条件下径流和输沙量的预测也存在一定差异。
The results showed the ability of simulated data varied by different GCMs. It led to the difference of estimated runoff depth and sediment discharge.
结果表明：不同大气环流模式对该流域降水量模拟结果不同，导致未来气候条件下径流和输沙量的预测也存在一定差异。
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