Compilation of literature using apparent soil electrrical conductivity with geophysical techniques to measure soil properties

This database is a comprehensive compilation of hundreds of published accounts of the use of apparent soil electrical conductivity (ECa) at the field and landscape scales with electrical resistivity (ER) or electromagnetic induction (EMI) sensors to measure a variety of soil properties. Version 1.0 of the database lists nearly 470 studies where ECa was used to measure, map, and/or monitor several soil properties, either directly or indirectly. The directly measured soil properties are: salinity – including total dissolved solids, sodicity, inorganic C, CaCO3, and nutrients (237 studies); water content – including macropore porosity, water table depth, and irrigation canal seepage (105 studies); texture-related – including sand, clay, depth to claypans or sand layers, soil layers, topsoil thickness, depth to bedrock, saturation percentage, soil type, and map units (133 studies); bulk density related – including compaction, and rock content (18 studies); organic matter related – including soil organic carbon, total carbon, and organic chemical plumes (24 studies); cation exchange capacity (13 studies); temperature (2 studies); and mineralogy (1 study). The indirectly measured soil properties are: groundwater recharge (6 studies); heavy metals (1 study); herbicide partition coefficients (2 studies); leaching – including leaching fraction (5 studies); soil drainage and drainage classes – including hydraulic conductivity (7 studies); soil resistance to penetration (1 study). A first version of this database was presented by Corwin and Lesch (2005a, 2013).

本数据库为一份全面的汇编资料，收录了数百篇已发表的研究报告，这些研究均在田块与景观尺度下，借助电阻率（electrical resistivity, ER）或电磁感应（electromagnetic induction, EMI）传感器，通过表观土壤电导率（apparent soil electrical conductivity, ECa）测定多种土壤属性。该数据库1.0版本收录了近470项研究，这些研究通过表观土壤电导率直接或间接完成多种土壤属性的测定、绘图与/或监测。其中直接测定的土壤属性包括：盐分相关属性（涵盖总溶解固体、钠质化程度、无机碳、碳酸钙以及养分，共237项研究）；含水量相关属性（涵盖大孔隙孔隙度、地下水位深度以及灌溉渠渗漏，共105项研究）；质地相关属性（涵盖砂粒占比、粘粒占比、粘土层或砂层埋深、土层结构、表土层厚度、基岩埋深、饱和百分率、土壤类型以及制图单元，共133项研究）；容重相关属性（涵盖土壤压实度与岩石含量，共18项研究）；有机质相关属性（涵盖土壤有机碳、总碳以及有机化学羽流，共24项研究）；阳离子交换量（共13项研究）；土壤温度（共2项研究）；矿物学特征（共1项研究）。间接测定的土壤属性包括：地下水补给量（共6项研究）；重金属含量（共1项研究）；除草剂分配系数（共2项研究）；淋溶作用（涵盖淋溶率，共5项研究）；土壤排水性与排水等级（涵盖导水率，共7项研究）；土壤抗穿透阻力（共1项研究）。本数据库的首个版本由Corwin与Lesch（2005a、2013）提出。