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Table 1 Soil compositions

From: A new GIS model for ecologically suitable distributions of medicinal plants

Field Description UNITS DSMW SOTWIS CHINA ESDB
T_GRAVEL Topsoil gravel content %vol.
T_SAND Topsoil sand fraction % wt
T_SILT Topsoil silt fraction % wt
T_CLAY Topsoil clay fraction % wt
T_USDA_TEX_CLASS Topsoil USDA texture classification Name
T_REF_BULK_DENSITY Topsoil reference bulk density kg/dm3
T_OC Topsoil organic carbon % weight
T_PH_H2O Topsoil pH (H2O) − log(H +)
T_CEC_CLAY Topsoil CEC (clay) cmol/kg
T_CEC_SOIL Topsoil CEC (soil) cmol/kg
T_BS Topsoil base saturation %
T_TEB Topsoil TEB cmol/kg
T_CACO3 Topsoil calcium carbonate % weight
T_CASO4 Topsoil gypsum % weight
T_ESP Topsoil sodicity (ESP) %
T_ECE Topsoil SALINITY (Elco) dS/m