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以BP网络(Back Propagation Network)为基础,建立了小流域土壤养分(包括N、P、K3种成分)为输出层,流域出口处的洪量、输沙量及流域的年降雨量为输入层的包含一个中间层的BP网络。经检验,模型输出与多元线性回归模型计算结果一致。模型的建立及求解为水土保持中土壤养分的流失预测研究提供了一种新方法。
Based on BP network (Propagation Network), soil nutrients (including N, P, and K components) in the small watershed were set as the output layer. The flood volume at the outlet of the river basin, sediment discharge and annual rainfall in the basin were taken as input layers BP network with one middle tier. After testing, the model output and multivariate linear regression model calculation results. The establishment of model and its solution provide a new method for the prediction of soil nutrient loss in soil and water conservation.