Soil organic carbon and nitrogen data across the Resource Gradient Experiment — Resource Gradient Experiment

Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

Soil cores were collected in Nov 2016 from 12 plots, 3 cores per plot, and 3 CHN analysis reps per core. These data are the average across the 3 CHN reps. CV among CHN reps were all <0.1, most <0.05. Also provided: bulk density, 2016 crop yield, and soil texture.

This datatable is part of the Data for McGill et.al. 2018. The greenhouse gas cost of agricultural intensification with groundwater irrigation in a Midwest US row cropping system. dataset.

Data for Data for McGill et.al. 2018. The greenhouse gas cost of agricultural intensification with groundwater irrigation in a Midwest US row cropping system. https://doi.org/10.1111/gcb.14472

Note

Experiment:	Resource Gradient Experiment
Dataset:	KBS125
Datatable ID:	KBS127-002.181
Repository link:	http://doi.org/10.6073/pasta/6ab26c6ead42552a1d4f0261e8dac9bc
Related Tables:	Greenhouse gases dissolved in groundwater used for irrigation at the KBS LTER Soil pH and liming rates Change in soil N2O emissions from irrigation
Related Files:	LTER_RG_code_archive_for_total_GWI_McGill_2018.R
Personnel:	Bonnie McGill, principal contact Stephen Hamilton, lead investigator
Last Updated	2023-10-24

Variate	Description	Units
plot	plot number
depth	core length in cm
core	core number
treatment	experimental treatment name
block	replicate plot
is irrigated	't' the plot is irrigated 'f' if it is not
c percent	total carbon percent in the soil core	g/g
n percent	total nitrogen percent in the soil core	g/g
bulk density	soil bulk density
crop yield 2011 to 2016	total crop yield from 2011 to 2016	kg/ha
crop yield 2016	wheat yield in 2016	kg/ha
yield11 100	2011 yield divided by 100 to reduce the numerical instability for the fitting routine
yield16 100	2016 yield divided by 100 to reduce the numerical instability for the fitting routine
total carbon	calculated from bulk density and carbon percent
total nitrogen	calculated from bulk density and nitrogen percent
sand	sand percent	g/g
silt	silt percent	g/g
clay	clay percent	g/g

Protocols

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Data Excerpt

plot	depth	core	treatment	block	is_irrigated	c_percent	n_percent	bulk_density	crop_yield_2011_to_2016	crop_yield_2016	yield11_100	yield16_100	total_carbon	total_nitrogen	sand	silt	clay
203	0-10	1	F1	2	false	0.8081	0.09633333	1.463	20830.0	3375.0	208.3	33.75	1.1822503	0.2114035	0.5	0.32	0.18
203	0-10	2	F1	2	false	0.7488667	0.09063333	1.401	20830.0	3375.0	208.3	33.75	1.0491621	0.19046596	0.5	0.32	0.18
203	0-10	3	F1	2	false	0.9317333	0.10983333	1.381	20830.0	3375.0	208.3	33.75	1.2867237	0.22751975	0.5	0.32	0.18
203	10-25	1	F1	2	false	0.58806664	0.0753	1.237	20830.0	3375.0	208.3	33.75	0.72743845	0.13971914	0.5	0.32	0.18
203	10-25	2	F1	2	false	0.56116664	0.0762	1.245	20830.0	3375.0	208.3	33.75	0.6986525	0.1423035	0.5	0.32	0.18

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