ev smith

A 1282-day field study was conducted to provide data to assess the prediction of field soil water content time series θ(t). Volumetric water content was determined, typically once a week, by neutron thermalization at 20-, 40-, 60-, 80- and 100-cm depths. Soil samples were taken at 60 locations between 14- and 114-cm depths to determine soil properties, water retention, and saturated hydraulic conductivity. Soil properties include soil texture, bulk density, organic matter, and porosity.本研究开展了一项为期1282天的田间实地研究，旨在获取用于预测田间土壤含水量时间序列θ(t)的相关数据。通常每周通过中子慢化法测定20、40、60、80及100cm土层处的土壤体积含水量。研究人员在14至114cm土层范围内的60个采样点采集土壤样本，用以测定土壤属性、持水特性与饱和导水率，其中土壤属性涵盖土壤质地、容重、有机质含量及孔隙度。