Poplar Yields of Poplar Density Study — Main Cropping System Experiment (MCSE)
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Yields, number of stems, and moisture content of poplar trees of the Poplar Density Study at clear-cut harvest of density microplots and of main plots. Also included is the harvested biomass of non-poplar trees that were not planted but germinated and grew during the study.
This datatable is part of the Poplar (T5) Density Study dataset.
A microplot study was conducted in the Poplar (T5) treatment of the LTER Main Cropping System Experiment (MCSE; 1989-2008) to examine the effect of three planting densities on poplar yields over two harvest cycles: the first cycle (1989-1998) included split plots of +/- herbicide use within each microplot and the second (1998-2008) recorded the coppiced regrowth of harvested trees. Poplars were planted in 1989 at spacings of 1 × 0.5 m, 2 × 1 m, and 2 × 3 m, in 43 m wide (E-W) and 25 m long (N-S) microplots arranged in one and a half rows along the northern edge of each replicate plot (R1-R6). The main plot was planted at a spacing of 2 × 1 m.
Note
| Experiment: | Main Cropping System Experiment (MCSE) |
| Data available from: | January 2008 |
| Dataset: | KBS129 |
| Datatable ID: | KBS129-001.29 |
| Core Areas | Primary Production |
| Repository link: | |
| Related Files: | |
| Personnel: |
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| Last Updated | 2024-05-01 |
| Variate | Description | Units |
|---|---|---|
| harvest date | the date of the harvest | |
| replicate | the field replicate of treatment T5 | |
| section | the planting density section | |
| plot area | the size of the plot | m^2 |
| dry weight kg m2 | biomass dry weight | |
| sample type | poplar or non-poplar biomass | |
| stem count | the number of stems in the section | |
| moisture | gravimetric biomass moisture at harvest | % |
| comments | comments about the observation |
| Protocols |
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Data Excerpt
| harvest_date | replicate | section | plot_area | dry_weight_kg_m2 | sample_type | stem_count | moisture | comments |
|---|---|---|---|---|---|---|---|---|
| 2008-01-22 | 1 | 1x0.5 SE | 561.6 | 0.41 | non-poplar | 133.0 | 44.704056 | moisture was pooled across replicates and locations since it was not significantly different |
| 2008-01-22 | 1 | 1x0.5 SE | 561.6 | 4.28 | poplar | 133.0 | 51.23131 | moisture was pooled across replicates and locations since it was not significantly different |
| 2008-01-22 | 2 | 1x0.5 SE | 561.6 | 0.18 | non-poplar | 104.0 | 44.704056 | moisture was pooled across replicates and locations since it was not significantly different |
| 2008-01-22 | 2 | 1x0.5 SE | 561.6 | 4.38 | poplar | 104.0 | 51.23131 | moisture was pooled across replicates and locations since it was not significantly different |
| 2008-01-22 | 3 | 1x0.5 SE | 561.6 | 0.2 | non-poplar | 205.0 | 44.704056 | moisture was pooled across replicates and locations since it was not significantly different |