Soil Inorganic Nitrogen — 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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use
Surface (0 to 25 cm) inorganic nitrogen concentrations of nitrate-N and ammonium-N for soils collected from the Main Cropping System Experiment organized by treatment and plot.
This datatable is part of the Soil Inorganic Nitrogen on the Main Cropping System Experiment dataset. Measurement of soil inorganic nitrogen began in 1989 for all treatments on the LTER Main Site and 1993 on the Successional and Forest sites. Ammonium and nitrate are analyzed twice monthly or monthly during the growing season on baseline soil samplings. Additional datasets from the Baseline Soil Samplings include soil moisture, total N and total C.
Note
| Experiment: | Main Cropping System Experiment (MCSE) |
| Data available from: | January 1989 to January 2021 |
| Dataset: | KBS021 |
| Datatable ID: | KBS021-002.94 |
| Core Areas | Inorganic Nutrients,Disturbance |
| Repository link: | http://doi.org/10.6073/pasta/ad375cd7fa90c175ab71430a363fd72e |
| Related Tables: | |
| Personnel: |
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| Last Updated | 2022-09-14 |
| Variate | Description | Units |
|---|---|---|
| Year | year in which the date occurs | |
| Campaign | sampling effort with which the data is associated | |
| Date | date of soil sampling | |
| Treatment | main LTER treatment | |
| Replicate | replicate block | |
| station | station id if the samples were not composited | |
| sub plot | The treatment sub_plot. The prairie strips (ST) in T3 and T4 | |
| dry soil g | dry soil weight used in the extraction | gram |
| solution ml | ml of KCL solution | ml |
| no3 ppm | measured NO3-N concentration in solution (ppm) | mg/L |
| nh4 ppm | measured NH4-N concentration in solution (ppm) | mg/L |
| Nitrate | soil extractable nitrate plus nitrite, as N (average of analytical replicates, screened for outliers and corrected for soil moisture) | μg/g |
| Ammonium | soil extractable ammonium, as N (average of analytical replicates, screened for outliers and corrected for soil moisture) | μg/g |
| top depth cm | top depth of the soil sample as measured from the soil surface | centimeter |
| bottom depth cm | bottom depth of the soil sample as measured from the soil surface | centimeter |
Data Excerpt
| year | campaign | date | treatment | replicate | station | sub_plot | dry_soil_g | solution_ml | no3_ppm | nh4_ppm | nitrate | ammonium | top_depth_cm | bottom_depth_cm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | Soil Inorganic N | 2021-11-30 | T1 | R1 | 8.41 | 101.59 | 0.23 | 0.21 | 2.74 | 2.48 | 0 | 25 | ||
| 2021 | Soil Inorganic N | 2021-11-30 | T1 | R2 | 8.46 | 101.54 | 0.28 | 0.3 | 3.35 | 3.57 | 0 | 25 | ||
| 2021 | Soil Inorganic N | 2021-11-30 | T1 | R3 | 8.28 | 101.72 | 0.64 | 0.66 | 7.9 | 8.07 | 0 | 25 | ||
| 2021 | Soil Inorganic N | 2021-11-30 | T1 | R4 | 8.47 | 101.53 | 0.3 | 0.22 | 3.6 | 2.62 | 0 | 25 | ||
| 2021 | Soil Inorganic N | 2021-11-30 | T1 | R5 | 8.45 | 101.55 | 0.24 | 0.2 | 2.87 | 2.37 | 0 | 25 |