Segawa1973
Data contributor: Masae I. Ishihara, Hajime Utsugi, Hiroyuki Tanouchi, Tsutom Hiura
Email: [email protected]
Address:
- Graduate School for International Development and Cooperation, Hiroshima University, 1-5-1 Kagamiyama, Higashi-Hiroshima 739-8529, Japan
- Forestry and Forest Products Research Institute (FFPRI), 1 Matsunosato, Tsukuba, Ibaraki, 305-8687, Japan
- Hokkaido Research Center, Forestry and Forest Products Research Institute (FFPRI), Hitsujigaoka-7, Toyohira, Sapporo, Hokkaido, 062-8516, Japan
- Tomakomai Research Station, Field Science Center for Northern Biosphere, Hokkaido University, Takaoka, Tomakomai 053-0035, Japan
Citation: Segawa K, Kato R and Yoshimura K (1973). 'Populus plantation at mountainous area. Growth and biomass at Terada Experimental stand.' Touhoku Research Center, Forestry and Forest Products Research Institute.
DOI:
Abstract:
The dataset includes records for 9 individuals from 1 species belonging to 1 family(ies), presenting 1 functional type(s), growing in 1 condition(s) within 1 major type(s) of habitat, with data included for the following variables:
| Variable | Label | Units | N | Min | Median | Max |
|---|---|---|---|---|---|---|
| latitude | Latitude | deg | 9 | 40 | 40 | 40 |
| longitude | Longitude | deg | 9 | 141 | 141 | 141 |
| a.lf | Leaf area | m2 | 9 | 16 | 68 | 161 |
| a.stbh | Stem area at breast height | m2 | 9 | 0.021 | 0.038 | 0.063 |
| h.t | Height | m | 9 | 16 | 19 | 22 |
| h.c | Height to crown base | m | 9 | 3.8 | 7.8 | 9.3 |
| d.bh | Dbh | m | 9 | 0.16 | 0.22 | 0.28 |
| h.bh | Height of d.bh measurement | m | 9 | 1.3 | 1.3 | 1.3 |
| c.d | Crown depth | m | 9 | 7.7 | 12 | 18 |
| m.lf | Leaf mass | kg | 9 | 1.5 | 4.9 | 11 |
| m.st | Total stem mass | kg | 9 | 50 | 119 | 182 |
| m.so | Aboveground mass | kg | 9 | 51 | 125 | 193 |
| m.br | Branch mass | kg | 9 | 5.3 | 19 | 38 |
And locally within the country:
The sites sampled are:
| Location | Longitude | Latitude | Vegetation |
|---|---|---|---|
| Japan-Nishine town, Terada Experimental Site- | 141.1 | 40 | Temperate forest |
The growing conditions of sampled plants was:
| Location | growingCondition |
|---|---|
| Japan-Nishine town, Terada Experimental Site- | plantation managed |
| Species | Family | Pft |
|---|---|---|
| Populus x euramericana | missing | deciduous angiosperm |
Sampling strategy: Sample trees were hybrid poplar of three strains (first three trees are Kamabuchi, second three are I-154, and last three are I-214) planted in Terada Experimental Site, Iwate, Japan (340 m a.s.l.) 14 years befores. Sample trees were selected to represent size classes. Sample trees were then treated with the stratified clip technique by cutting them into parts contained in horizontal layers and separated into stem, branches, and leaves.
Leaf area: Total leaf area was estimated from fresh mass and the ratio of leaf area to fresh mass. Thirty leaves were selected randomly from the upper, middle and lower crown and their leaf areas were measured by the automatic planimeter.
Stem cross sectional area: Estimated from stem diameter.
Height: Method not reported.
Biomass: Measured fresh mass of each component was converted to dry mass from the ratio of dry to fresh mass. The ratio was estimated from subsamples taken from each layer. Stem discs were collected from each layer as subsamples. Subsamples were oven-dried at 82 deg C.
Other variables: M.I. Ishihara, H. Utsugi, H. Tanouchi, and T. Hiura conducted formal search of reference databases and digitized raw data from Segawa et al. (1969). Based on this reference, meta data was also created by M.I. Ishihara
This is how the study Segawa1973 fits in the entire dataset (grey). each colour represents a species. A legend of species names with colours is included at the end for reports with 1 < n < 20 species.
