Attribute_Name	ORDER	Storage_Type	Measurement_Scale	Number_Type	UNITS	DESCRIPTION	CODES
treatment	1	a	nominal	n/a	nominalDay	plots were covered with open-top-chambers, and injected with ambient or elevated CO2 air, for five years on a shortgrass steppe. Soil composition was measured to see if plots differed in soil type.	Control=unchambered plots; Ambient=ambient CO2 chambered plots; Elevated=720ppm CO2 chambered plots
depth	2	a	nominal	n/a	centimeter	soil depth increment in cm	0-5, 5-10, 10-20, 20-30, 30-40, 40-60, 60-75
%sand	3	a	ratio	real	dimensionless	percent sand in soil	n/a
%silt	4	a	ratio	real	dimensionless	percent silt in soil	n/a
%clay	5	a	ratio	real	dimensionless	percent clay in soil	n/a
