Dataset

Biodiversity: A field test of biofuel production and ground-water quality. - Experiment 246

Soil carbon and nitrogen

Years Available: 2007 - 2010

Principle Investigators

View All Experiment and Dataset Methods

Environmental Data Initiative data package

EDI Package ID	DOI
knb-lter-cdr.553.8	doi:10.6073/pasta/d955983c8aa00facd0b7650a2615290c

ATTRIBUTES

Field	Name	Definition	Unit	Code
1	Plot	Plot from which the soil samples were taken
2	Treatment vegetation type	Indicates plot vegetation type		P=prairie, H=hay, B=bareground, C=corn
3	Treatment	Treatments applied to plot		C=control/nothing added, T=treated/contaminants and nitrogen fertilizer applied
4	Depth	Depth at which a particular sample was taken in centemeters
5	SampleDate	Approximate date of sample collection (MMDDYYY)
6	Soil_PercentCarbon	Percent carbon in sample determined by University of Nebraska lab	dimensionless
7	Soil_PercentNitrogen	Percent nitrogen in sample determined by University of Nebraska lab	dimensionless
8	UNL_CN_Notes	Notes from the University of Nebraska analysis lab
9	CNCedarCreekArchiveNumber	a number assigned by the Cedar creek data manager for archive purposes
10	pH_H20Meth	pH of the soil sample using the water method	dimensionless
11	pH_CaCl2Meth	pH of the soil determined with the Calcium chloride method	dimensionless
12	Soil Bulk Density	mass of oven dried soil divided by core volume	gramsPerCubicCentimeter
13	BrayP	total phosphorus (ppm in soil)	dimensionless
14	Percent sand	Percentage of sand in soil sample	dimensionless
15	Percent silt	Percentage of silt in soil sample	dimensionless
16	Percent Clay	Percentage of clay in soil sample	dimensionless
17	K	Potassium soil cations (milliequivalents)	milliequivalentPer100grams
18	Ca	Calcium soil cations (milliequivalents)	milliequivalentPer100grams
19	Mg	Magnesium soil cations (milliequivalents)	milliequivalentPer100grams
20	Naprefix	if the Na value is less than the detection limit or reporting limit then a less than sign will appear here and the limit will appear in the "na" column
21	Na	Sodium soil cations (milliequivalents)	milliequivalentPer100grams
22	H prefix	If the H value is less than the detection limit or reporting limit, then a less than sign will appear here and the limit will appear in the "H " column
23	H	H soil cations (milliequivalents)	milliequivalentPer100grams
24	C.E.C.	Cation Exchange Capacity, University of Minnesota Research Analytical Laboratory Cation Exchange Capacity, CEC, by Summation Method	dimensionless
25	Percent Base Saturation	Calculated by dividing the milliequivlents of bases by the CEC and multiplying by 100	dimensionless
26	K base sat_percent	Calculated by dividing the potassium milliequivalents by the CEC of the soil and multiplying by 100	dimensionless
27	Ca base sat_percent	Calculated by dividing the Ca milliequivalents by the CEC of the soil and multiplying by 100	dimensionless
28	Mg base sat_percent	Calculated by dividing the Mg milliequivalents by the CEC of the soil and multiplying by 100	dimensionless
29	Na base sat_percent	Calculated by dividing the Na milliequivalents by the CEC of the soil and multiplying by 100	dimensionless
30	K ppm	Potassium in parts per million (390ppm =1 milliquivalent)	milligramsPerLiter
31	Ca ppm	Calcium in parts per million (240 ppm = 2 milliequivalents)	milligramsPerLiter
32	Mg ppm	Magnesium in parts per million (3000ppm=15 milliequivalents)	milligramsPerLiter
33	Na ppm	Sodium in parts per million (230=1milliequivalent)	milligramsPerLiter
34	Notes	Notes

SAMPLE DATASET

Plot	Treatment vegetation type	Treatment	Depth	SampleDate	Soil_PercentCarbon	Soil_PercentNitrogen	UNL_CN_Notes	CNCedarCreekArchiveNumber	pH_H20Meth	pH_CaCl2Meth	Soil Bulk Density
4	B	T	0-10cm	8/1/2007	0.4396	0.039	analysis done on ground soil	66436	6.55	5.58	1.37694257
4	B	T	10-20cm	8/1/2007	0.5043	0.047	analysis done on ground soil	66437	6.21	4.39	1.479971538
4	B	T	20-30cm	8/1/2007	0.334	0.0319	analysis done on ground soil	66438	6.07	4.84	1.592268801
4	B	T	30-45cm	8/1/2007	0.2585	0.0259	analysis done on ground soil	66439	6.16	5.22	1.679625311
4	B	T	45-60cm	8/1/2007	0.2118	0.0176	analysis done on ground soil	66440	6.02	4.71	1.637889941
4	B	T	60-80cm	8/1/2007	0.2026	0.0218	analysis done on ground soil	66441	6	4.7	1.564657045
4	B	T	80-100cm	8/1/2007	0.1281	0.012	analysis done on ground soil	66442	6.03	4.65	1.588007748
4	B	T	100-150cm	8/1/2007
4	B	T	150-200cm	8/1/2007
7	H	C	0-10cm	8/1/2007	0.6737	0.0578	analysis done on ground soil	66443
7	H	C	10-20cm	8/1/2007	0.4489	0.0425	analysis done on ground soil	66444
7	H	C	20-30cm	8/1/2007	0.293	0.0303	analysis done on ground soil	66445

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