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土壤墒情空间分布场的模拟和监测对科学指导农业灌溉具有重要意义。将分布式水文模型的模拟数据作为样本观测点上的土壤墒情值,运用改进的克里金插值法对大尺度农田土壤墒情分布进行了插值,分析了区域大尺度土壤墒情的分布规律,并以邯郸市为例,将模拟值与实测值进行了对比。结果表明,模拟值与实测值具有较好的吻合度,两者的相对误差和相关系数均接近最优值,验证了修正克里金插值法具有可行性和可靠性。
The simulation and monitoring of the spatial distribution of soil moisture is of great significance for the scientific guidance of agricultural irrigation. The simulation data of distributed hydrological model is taken as the soil moisture content at the sample observation point. The improved Kriging interpolation method is used to interpolate the soil moisture distribution in large-scale farmland. The distribution of soil moisture in large-scale area is analyzed. Handan City, for example, the simulation and measured values were compared. The results show that the simulated and measured values are in good agreement with each other, and the relative errors and the correlation coefficients between the two are close to the optimal values. It is proved that the modified Kriging interpolation method is feasible and reliable.