Soil Inorganic Nitrogen by Treatment — 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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use
Average concentrations of nitrate (NO3-N) and ammonium (NH4-N), expressed as micrograms N per gram dry soil, in surface soils (0-25 cm) of MCSE treatments. Treatment averages are derived from datatable KBS021-002.
This datatable is part of the Soil Inorganic Nitrogen on the Main Cropping System Experiment dataset. This dataset contains the inorganic nitrogen concentration and nitrogen mineralization potential of surface soils (0-25 cm) of the Main Cropping System Experiment (MCSE) at the LTER Main Site (Treatments 1-8, since 1989) and the Mid-successional (TSF) and Forested (TCF, TDF) sites (since 1993). Soil samples are routinely collected once or twice monthly during the growing season, composited by treatment replicate, and analyzed for ammonium and nitrate (plus nitrite); on a near annual basis subsamples are reburied in the field for estimation of nitrogen mineralization potential.
Note
| Experiment: | Main Cropping System Experiment (MCSE) |
| Data available from: | January 1989 to January 2021 |
| Dataset: | KBS021 |
| Datatable ID: | KBS021-001.101 |
| Core Areas | Inorganic Nutrients |
| Repository link: | http://doi.org/10.6073/pasta/ad375cd7fa90c175ab71430a363fd72e |
| Related Tables: | |
| Personnel: |
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| Last Updated | 2023-08-29 |
| Variate | Description | Units |
|---|---|---|
| Year | Year in which the date occurs | |
| Campaign | The sampling campaign | |
| sample date | date of sampling | |
| Treatment | treatment | |
| sub plot | the sub_plot if any. On T3 and T4 these are mainly the strip plots 'ST' | |
| Nitrate | soil nitrate pool averaged within treatment across replicates | μg/g |
| Ammonium | soil ammonium pool averaged within treatment across replicates | μg/g |
| top depth cm | top depth of the soil sample measured from the soil surface | |
| bottom depth cm | bottom depth of the soil sample as measured from the soil surface |
| Protocols |
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| Soil Inorganic N |
Data Excerpt
| year | campaign | sample_date | treatment | sub_plot | nitrate | ammonium | top_depth_cm | bottom_depth_cm |
|---|---|---|---|---|---|---|---|---|
| 2021 | Soil Inorganic N | 2021-11-30 | T1 | 3.651 | 3.555 | 0 | 25 | |
| 2021 | Soil Inorganic N | 2021-11-30 | T2 | 2.112 | 2.013 | 0 | 25 | |
| 2021 | Soil Inorganic N | 2021-11-30 | T3 | 2.927 | 2.293 | 0 | 25 | |
| 2021 | Soil Inorganic N | 2021-11-30 | T4 | 3.122 | 2.775 | 0 | 25 | |
| 2021 | Soil Inorganic N | 2021-11-30 | T5 | 1.009 | 3.41 | 0 | 25 |