Soil Inorganic Nitrogen - Early Successional Microplots — 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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use
Inorganic nitrogen concentrations of ammonia and nitrate in soils of the fertilization and disturbance microplots on the LTER Early Successional treatment (T7).
5 soil cores (0-10 cm, diam=1.9 cm) were collected on the SW-NE diagonal in the center of the 3×3m plot
This datatable is part of the Plant Community and Ecosystem Responses to Long-term Fertilization & Disturbance dataset.
This work is part of the long-term sampling and monitoring of successional dynamics in abandoned fields – and responses to N-fertilization. Data from this research has been, and will continue to, contribute to LTER cross-site analysis of plant community dynamics, diversity-productivity, and responses to fertilization and disturbance.
N-fertilized and tilled (disturbed) microplots are located in the NW corner of all treatment 7 (early successional communities) on the LTER main site.
Experimental treatments are:
- Nitrogen addition vs. no nitrogen addition and 2) Annual disturbance vs. undisturbed
Note
| Experiment: | Main Cropping System Experiment (MCSE) |
| Data available from: | April 1996 to October 2011 |
| Dataset: | KBS055 |
| Datatable ID: | KBS055-002.56 |
| Core Areas | Inorganic Nutrients,Disturbance |
| Repository link: | http://doi.org/10.6073/pasta/ea22c735ddfe17c595ccca978a87d109 |
| Related Tables: | |
| Personnel: |
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| Last Updated | 2023-10-24 |
| Variate | Description | Units |
|---|---|---|
| sample date | collection date of the sample | |
| Year | year the sample is assigned to | |
| treatment | Main Site treatment that the microplot is located in | |
| replicate | Main Site replicate that microplot is located in | |
| plot id | plot ID that the sample was collected from | |
| disturbed | indicates whether the plot is tilled (true) or not (false) | |
| fertilized | indicates whether the plot is fertilized (true) or not (false) | |
| top depth cm | the top of the sample column with 0 cm as the soil surface | |
| bottom depth cm | the bottom of the soil column collected with 0 cm as the soil surface | |
| moisture percent | soil moisture of the sample in percent (w/w) | % |
| nh4 n ug g | ammonium N content of the sample (micro grams NH4-N per gram of soil) | μg/g |
| no3 n ug g | nitrate N content of the sample (micro grams NO3-N per gram of soil) | μg/g |
| Protocols |
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Data Excerpt
| sample_date | year | treatment | replicate | plot_id | disturbed | fertilized | top_depth_cm | bottom_depth_cm | moisture_percent | nh4_n_ug_g | no3_n_ug_g |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2011-10-03 | 2011 | T7 | R6 | 6711 | true | true | 0 | 10 | 18.18 | 11.8 | 7.14 |
| 2011-10-03 | 2011 | T7 | R6 | 6710 | true | false | 0 | 10 | 20.09 | 2.96 | 0.3 |
| 2011-10-03 | 2011 | T7 | R6 | 6701 | false | true | 0 | 10 | 19.69 | 5.06 | 1.22 |
| 2011-10-03 | 2011 | T7 | R6 | 6700 | false | false | 0 | 10 | 19.23 | 5.96 | 0.06 |
| 2011-10-03 | 2011 | T7 | R5 | 5711 | true | true | 0 | 10 | 19.29 | 2.78 | 3.75 |