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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

√

√

√

√