Baseline Spatial Variability Study - Soil Physical Properties — Main Cropping System Experiment (MCSE)

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Soil bulk density, and sand, silt and clay content of soils collected from an array of spatially referenced points prior to the start of the Main Cropping System Experiment.  

This datatable is part of the Baseline Spatial Variability Study dataset. A spatial variability study conducted across the LTER Main Site area (45 ha) at KBS prior to dividing the site into 1-ha experimental plots. During the 1988 growing season a stratified unaligned sampling scheme was used to collect 400-600 geo-referenced samples across the site (uniformly planted to a single variety of soybeans) for:

  1. geomorphological characteristics (microtopography, soil horizon depths, bulk density, texture);
  2. soil chemical characteristics (pH, NO3, NH4, total C, total N, moisture, inorganic P, trace metals);
  3. soil biological characteristics (N mineralization potentials, microbial biomass C, microbial biomass N, fungal/bacterial ratios, nematodes and other soil invertebrates; seed bank size);
  4. plant weed species abundance, weed biomass at peak standing crop); and
  5. insect characteristics (major pest and predator species).

Most soil samples (0-15cm) were taken before crop emergence, plant phenology samples were taken throughout the growing season, biomass samples were taken at physiological maturity, and insect samples were taken continuously. Dried soil and plant samples are archived for potential future analysis.


Experiment: Main Cropping System Experiment (MCSE)
Data available from: January 1988
Dataset: KBS003
Datatable ID: KBS003-001.48
Core Areas Inorganic Nutrients,Disturbance
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Last Updated 2022-07-29
Variate Description Units
year year of the observation
easting easting of sampling location in UTM 16N meter
northing northing of the sampling location in UTM 16N meter
bulk density gravel bulk density of gravel in mg/cm3 grams/cubiccentimeter
bulk density soil bulk density of soil in mg/cm3 grams/cubiccentimeter
sand percent sand %
silt percent silt %
clay percent clay %
plot the current plot

Data Excerpt

year easting northing bulk_density_gravel bulk_density_soil sand silt clay plot
1988 633981 4696121 0.021 1.5 49.7 35.7 14.6
1988 634280 4696128 0.036 1.48 51.7 33.7 14.6
1988 634081 4696127 0.025 1.31 41.7 41.7 16.6
1988 633913 4696126 0.011 1.06 31.7 47.7 20.6
1988 633914 4696128 0.014 1.08 31.7 49.7 18.6
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