简要介绍了人工神经网络用于洪水预报的基本原理，对降雨径流预报的网络模型进行了改进。
This article presents the principle of ANN briefly in the application of flood forecast and an improved network algorithm of rainfall runoff forecasting.
为流域分布式降雨-径流模型提供了可靠的实际蒸散量模拟方法。
The research results provided an effective method for the distributed rainfall-runoff model in simulating actual evapotranspiration.
在生成数字流域的基础上，采用WMS嵌入的HEC - 1模型进行降雨径流模拟研究。
Based on digital basin, HEC-1 model, a part of hydrological models in WMS, was selected to simulate the rainfall-runoff process.
根据一些径流小区的试验资料，运用灰色系统理论，建立降雨量、径流量、土壤侵蚀灰色系统动态模型。
Being based on the runoff plot investigations, a dynamic model of grey systems about the rainfall, the runoff rate and the soil erosion was introduced by using the grey systems theory.
用SCS降水-径流模型对陕北渭北多个典型小型集水区降雨径流量进行了分析与计算。
SCS model is applied to calculating runoff amount of several typical small watersheds of North of Shaanxi and Weibei .
通过数学模型定量的计算了大沙河流域人类活动对泥沙输移减少的贡献率平均为65.6%，而同期径流和降雨对泥沙减少的贡献率平均则为34.4%。
The average contributive ratio affecting soil erosion by human activities is 65.6%, and at the same period the contributive ratio by runoff and rainfall is 34.4%.
结合渭河流域陕西片的降雨变化趋势，建立了运用分布式水文模型预测流域径流变化规律的情景分析方法。
According to the change trend of rainfall in Weihe River Basin in Shaanxi, the paper established the scenario analysis method to predict the changes of runoff using distributed hydrological model.
实际作物腾发量是水平衡模型计算的一个重要变量，它和每日降雨量，灌溉量及土壤径流量共同计算静止水的亏缺量。
Actual evapotranspiration is a significant variable in the water balance calculation. It links daily rainfall, irrigation amount and soil bypass flow to calculate an immobile water deficit.
借助适合于黄土高原降雨- 产流特性的月水量平衡改进模型，计算天然状态下降雨应有的产流量与同期实测径流量求得减水效果。
The monthly water balance model for calculating runoff on loess plateau has been used in analyzing the benefits of water reduction by soil and water conservation.
由于目前已有很多比较成熟的流域水文模型，因此我们可以选用几个流域水文模型进行并行运算，来同时模拟流域降雨—径流关系。
As there have been many widely used watershed hydrological models, it now becomes possible to select a number of different hydrological models in parallel running for rainfall-runoff simulation.
本文根据地表径流中溶质流失的流动特征和物理规律，基于矢量合成概念，建立了二层解析模型，描述从降雨开始径流使水溶质在地表的流失过程。
A simple two-layer analytical model was developed to describe the process of dissolved chemical loss in surface runoff from the beginning of runoff occurrence.
该研究对降雨——径流水文过程进行了分析，为模型建立和验证提供了物理依据。
Based on the 5-year long measured precipitation data and runoff data, it analyzes the changing relations.
该研究对降雨——径流水文过程进行了分析，为模型建立和验证提供了物理依据。
Based on the 5-year long measured precipitation data and runoff data, it analyzes the changing relations.
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