Soil Total Carbon and Nitrogen of MCSE Baseline Study — Main Cropping System Experiment (MCSE)

Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

Total carbon and nitrogen content, plus soil moisture and pH, of surface soils (0-15 cm) sampled in 1988 at an array of geo-referenced points across the LTER Main Site prior to establishment of the MCSE. The designated MCSE treatment plot that includes the referenced point is also given.

This datatable is part of the Baseline Spatial Variability Study—Main Cropping System Experiment dataset.

This dataset contains the results of a spatial variability study conducted across the KBS LTER Main Site (48 ha) prior to establishment of the 1-ha treatment plots of the Main Cropping System Experiment (MCSE). During the 1988 growing season, the site was uniformly planted to a single variety of soybeans and a stratified unaligned sampling scheme was used to collect 400-600 geo-referenced samples across the site. Samples were analyzed for:

  1. geomorphology (elevation, soil bulk density and texture);
  2. soil chemistry (moisture, pH, inorganic N, total C and N);
  3. soil biology (microbial biomass C, respiration, and population size; N mineralization potentials; nematode counts by feeding type; seed bank);
  4. primary production (soybean biomass, soybean C and N).

Most soil samples (0-15 cm) were taken before crop emergence; plant biomass samples were taken at physiological maturity. Dried soil and plant samples were archived for potential future analysis.

Data in this dataset are summarized in the publication:
Robertson, G. P., K. M. Klingensmith, M. J. Klug, E. A. Paul, J. R. Crum, and B. G. Ellis. 1997. Soil resources, microbial activity, and primary production across an agricultural ecosystem. Ecological Applications 7:158-170.[0158:SRMAAP]2.0.CO;2


Experiment: Main Cropping System Experiment (MCSE)
Data available from: January 1988
Dataset: KBS003
Datatable ID: KBS003-002.101
Core Areas Organic Matter,Disturbance
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Last Updated 2024-03-18
Variate Description Units
year year of the observation
easting easting of sampling location in UTM 16N
northing northing of sampling location in UTM 16N
h2o fw soil moisture (fresh weight basis) in % %
pH soil pH
hplus soil H+ activity in 10E+6 H+
total c total C in % %
total n total N in % %
soil cn C:N ratio
h2o dw soil moisture (dry weight basis) in % %
h2o m2 soil moisture (dry weight, areal basis) in kg/m2
total c m2 total C (areal basis) in kg/m2
total n m2 total N (areal basis) in kg/m2
plot the current plot

Data Excerpt

year easting northing h2o_fw ph hplus total_c total_n soil_cn h2o_dw h2o_m2 total_c_m2 total_n_m2 plot
1988 633981 4696121 11.3 6.63 0.234 1.096 0.111 9.9 12.7 28.6 2.47 0.25
1988 634280 4696128 9.8 7.03 0.093 1.016 0.105 9.7 10.9 24.6 2.29 0.24
1988 634081 4696127 11.8 6.93 0.117 1.099 0.114 9.6 13.4 30.2 2.47 0.26
1988 633913 4696126 13.9 6.62 0.24 1.374 0.139 9.9 16.1 36.3 3.09 0.31
1988 633914 4696128 12.8 6.7 0.2 1.345 0.134 10.0 14.7 33.1 3.03 0.3
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