Soil organic carbon and nitrogen data across the 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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use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: KBS127-002.172
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Last Updated 2019-04-29
Variate Description Units
plot plot number
depth core length in cm centimeter
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 grams/cubiccentimeter
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 kilograms/squaremeter
total nitrogen calculated from bulk density and nitrogen percent kilograms/squaremeter
sand sand percent g/g
silt silt percent g/g
clay clay percent g/g

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 0.0963333 1.463 20830.0 3375.0 208.3 33.75 1.18225 0.211404 0.5 0.32 0.18
203 0-10 2 F1 2 false 0.748867 0.0906333 1.401 20830.0 3375.0 208.3 33.75 1.04916 0.190466 0.5 0.32 0.18
203 0-10 3 F1 2 false 0.931733 0.109833 1.381 20830.0 3375.0 208.3 33.75 1.28672 0.22752 0.5 0.32 0.18
203 10-25 1 F1 2 false 0.588067 0.0753 1.237 20830.0 3375.0 208.3 33.75 0.727438 0.139719 0.5 0.32 0.18
203 10-25 2 F1 2 false 0.561167 0.0762 1.245 20830.0 3375.0 208.3 33.75 0.698653 0.142303 0.5 0.32 0.18
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