Coppice Poplar Branch and Stem Biomass — 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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use
Total biomass of coppiced regrowth of poplars (T5, growth after first harvest in 1999 of trees planted in 1989) determined as the sum of stem (main vertical axes) and branch (axillary to stem) biomass per destructively sampled tree. This table is the summation of stem and branch coppiced regrowth of destructively sampled trees; see Related Tables for individual datatables.
This datatable is part of the Primary Production of the Poplar Treatment of the Main Cropping System Experiment dataset.
This dataset contains allometric and areal biomass data for the Poplar treatment (T5) of the Main Cropping System Experiment (MCSE) at the LTER Main Site. The Poplar treatment is managed as a short-rotation woody biomass system on an approximate 10-year rotation cycle with replanting or coppicing after harvest. Rotations are as follows:
- First: planted in April 1989 with stem cuttings of Populus nigra x P. deltoids hybrid at a stocking density of 1 tree per 2 square meter, harvested in February 1999.
- Second: trees allowed to coppice after 1999 harvest, coppicing produced multiple stems per tree, coppiced regrowth harvested in January 2008.
- Third: planted in May 2009, after a fallow year, with stem cuttings of Populus nigra x P. maximowiczii at a density of 1 tree per 3.6 square meter, harvested in February 2018.
- Fourth: planted in June 2019, after a fallow year, with stem cuttings of Populus nigra x P. maximowiczii at a density of 1 tree per 3.6 square meter.
For further information on poplar management, search the KBS Aglog.
Note
| Experiment: | Main Cropping System Experiment (MCSE) |
| Data available from: | September 1999 to January 2003 |
| Dataset: | KBS094 |
| Datatable ID: | KBS019-013.86 |
| Core Areas | Primary Production |
| Repository link: | http://doi.org/10.6073/pasta/11813b609a26b343cced93805b25a98b |
| Related Tables: | |
| Personnel: |
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| Last Updated | 2024-03-18 |
| Variate | Description | Units |
|---|---|---|
| Year | The sample year | |
| Campaign | a major multi-year research activity with a discreet purpose | |
| Date | date on which sampling occurred | |
| Treatment | main experimental treatment | |
| Replicate | replicate block, nested within treatment | |
| TreeID | A position code in the form x,y where x is column number starting from the west and y is row number starting from the south. | |
| BranchBiomass | mass of all branches for a tree | |
| StemBiomass | mass of all stems for a tree | |
| WoodyBiomass | areal mass of wood (stems and branches) | g/m2 |
| HeaviestStem | mass of the heaviest stem | |
| LongestStem | length of the longest stem | mm |
| BasalArea | sum of all stem cross-sections at 15 cm. | |
| MaxStemDiameter | diameter of the largest stem 15 cm above the ground | mm |
| Protocols |
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Data Excerpt
| year | campaign | date | treatment | replicate | tree_id | branchbiomass | stembiomass | woodybiomass | heavieststem | longeststem | basalarea | max_stem_diameter |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | Poplar Destructive Sampling | 1999-09-10 00:00:00 UTC | T5 | R1 | E50 | 18.57 | 300.57 | 159.57 | 103.44 | 201.4 | 8.4 | 1.86 |
| 1999 | Poplar Destructive Sampling | 1999-09-10 00:00:00 UTC | T5 | R1 | N16 | 140.86 | 1635.81 | 888.335 | 225.71 | 262.2 | 63.8 | 3.48 |
| 1999 | Poplar Destructive Sampling | 1999-09-10 00:00:00 UTC | T5 | R2 | E33 | 241.74 | 981.2599999999999 | 611.5 | 281.84 | 291.4 | 32.4 | 3.14 |
| 1999 | Poplar Destructive Sampling | 1999-09-10 00:00:00 UTC | T5 | R2 | N04 | 67.965 | 870.2700000000002 | 469.1175000000001 | 179.71 | 236.8 | 33.2 | 2.61 |
| 1999 | Poplar Destructive Sampling | 1999-09-10 00:00:00 UTC | T5 | R4 | E60 | 15.87 | 416.16999999999996 | 216.01999999999998 | 131.23 | 228.9 | 10.8 | 1.93 |