Plot Polygons — Research Context

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Spatial coordinates of the 1-ha treatment plots of the Main Cropping System Experiment (MCSE) at the LTER Main Site and the unmanaged successional sites. Plot ids are given as MCSE treatment number (T1-T8, SF, CF, DF) and replicate number (R1-R6).

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:

geomorphology (elevation, soil bulk density and texture);
soil chemistry (moisture, pH, inorganic N, total C and N);
soil biology (microbial biomass C, respiration, and population size; N mineralization potentials; nematode counts by feeding type; seed bank);
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. https://doi.org/10.1890/1051-0761(1997)007[0158:SRMAAP]2.0.CO;2

Note

Experiment:	Research Context
Dataset:	KBS003
Datatable ID:	KBS003-009.101
Repository link:	http://doi.org/10.6073/pasta/b49a09795d29e0c1149efcc068f3426e
Related Tables:	Soil Bulk Density and Texture of MCSE Baseline Study Soil Total Carbon and Nitrogen of MCSE Baseline Study Elevation of MCSE Baseline Study Soil Microbial Biomass and Respiration of MCSE Baseline Study Nematode Density of MCSE Baseline Study Soybean Biomass and Total Carbon and Nitrogen of MCSE Baseline Study Nitrogen Mineralization of MCSE Baseline Study Seed Bank of MCSE Baseline Study
Personnel:	James Crum, original investigator Boyd Ellis, original investigator Kasey Klingensmith, original investigator Eldor Paul, original investigator Mike Klug, original investigator Phil Robertson, original investigator Nick Haddad, lead investigator
Last Updated	2024-03-18

Variate	Description	Units
Plotid	The plot name (treatment and replicate)
wkt	The polygon as well known text

Protocols

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Data Excerpt

plotid	wkt
T4R1st
T2R5	SRID=4326;POLYGON((-85.36930163119852 42.41425500508158,-85.37035991469902 42.414234924576604,-85.3703774323706 42.41518391351914,-85.36931253617499 42.41519543031271,-85.36930163119852 42.41425500508158))
T3R5	SRID=4326;POLYGON((-85.36812281850459 42.41425436304274,-85.36919591604938 42.41425352291873,-85.36920627526209 42.415196457378464,-85.3681337278037 42.415199050271546,-85.36812281850459 42.41425436304274))
T4R5	SRID=4326;POLYGON((-85.36810546628189 42.413228137930716,-85.36917588242332 42.4132259105876,-85.36919494591353 42.41417449471546,-85.36811999818774 42.414175188932994,-85.36810546628189 42.413228137930716))
T6R1

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