Plot Polygons

Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

Plot polygons for the main LTER site

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.

Note

Experiment: Research Context
Dataset: KBS003
Datatable ID: KBS003-009.46
Repository link:
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Personnel:
Last Updated 2013-05-21
Variate Description Units
Plotid The plot name (treatment and replicate)
wkt The polygon as well known text

Data Excerpt

plotid wkt
T8R1 SRID=4326;POLYGON((-85.3724424756519 42.4035339650046,-85.3726232066456 42.4035311463462,-85.3726236975097 42.4038911881432,-85.3724414554893 42.4038929838639,-85.3724424756519 42.4035339650046))
T6R5 SRID=4326;POLYGON((-85.3704662350011 42.4142360737777,-85.371527986701 42.4142319569327,-85.3715460376982 42.4151684563282,-85.3704837453011 42.4151823488554,-85.3704662350011 42.4142360737777))
T2R4 SRID=4326;POLYGON((-85.3680794078139 42.4111851988481,-85.3691408589206 42.4111807191388,-85.3691609459252 42.4121273594349,-85.3680906192448 42.4121289654279,-85.3680794078139 42.4111851988481))
T1R6 SRID=4326;POLYGON((-85.3751657129725 42.4070980337047,-85.3762254800526 42.4070969916415,-85.3762355706955 42.4080404256073,-85.3751659331237 42.4080464920651,-85.3751657129725 42.4070980337047))
T4R4 SRID=4326;POLYGON((-85.3680413033719 42.4091391800403,-85.3691111587578 42.4091203362507,-85.3691261035934 42.4100766369576,-85.3680602033754 42.4100845510677,-85.3680413033719 42.4091391800403))
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