土壤有机碳具有高度的空间变异性，研究的尺度不同，其影响因子和变化规律也随之变化。
Soil organic carbon (SOC) was characterized by high spatial variability. Its impact factor and various rules would change in different research scales.
针对目前灌区灌溉预报存在的问题，考虑灌区土壤水分和影响土壤水分变化的因子的空间变异性以及预报的实时性，提出了灌区实时灌溉预报模型。
The real time irrigation forecasting method and models were presented and the parameters in these models were calibrated based on data investigated in Doushan Irrigation Scheme.
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