Soil Total Carbon and Nitrogen - Surface

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Total carbon and total nitrogen of surface soils from the LTER Main Site and the Successional and Forested sites. Total C and N are analyzed on one date annually of the baseline soil samplings. Samples are combusted and measured on a CHN analyzer. These samples are taken from the 0-25 depth.

This datatable is part of the Soil Total Carbon and Total Nitrogen on the Main Cropping System Experiment dataset. Soil carbon and nitrogen are presented as % elemental carbon and nitrogen (g C or N / 100 g soil) for the sampling depth of the specific sampling date unless indicated otherwise. Samples were taken with either a 2.5 cm diameter soil corer (sampling by soil depth) or a 10 cm diameter Giddings probe (sampling by soil profile). See Baseline Soil Sampling protocol for general sampling information. For specific sampling details for a particular date, see Soil Sampling Field Log. Soil samples are sieved to 4mm and composited by plot. Soil % elemental carbon and nitrogen values are determined by sample combustion and subsequent TCD gas chromatography, using a Carlo Erba automated CHN analyzer as described in the sampling protocol.

Note

Experiment: Main Cropping System Experiment (MCSE)
Data available from: June 1989 to April 2001
Dataset: KBS024
Datatable ID: KBS024-001.24
Core Areas Organic Matter,Disturbance
Personnel:
Last Updated 2017-01-26
Variate Description Units
sample date date of sampling
treatment treatment
replicate replicate block
n number of analytical sample replicates number
mean c mean percent carbon %
sd c standard deviation percent carbon %
mean n mean percent nitrogen %
mean cn standard deviation percent nitrogen %
sd n undescribed dimensionless
sd cn ratio: mean C divided by mean N g/g
year year in which the date occurs

Data Excerpt

sample_date treatment replicate n mean_c sd_c mean_n sd_n mean_cn sd_cn year
2001-04-04 1 3 3 1.09 0.05 0.12 0.0 8.99 2001.0
2001-04-04 1 4 3 0.82 0.03 0.1 0.0 8.45 2001.0
2001-04-04 1 1 3 0.65 0.06 0.08 0.0 7.85 2001.0
2001-04-04 1 2 3 0.83 0.03 0.1 0.0 8.52 2001.0
2001-04-04 1 5 3 0.65 0.01 0.08 0.0 7.98 2001.0
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