Komiyama2003
Data contributor: Akira Komiyama
Email: komiyama@gifu-u.ac.jp
Address:
- Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
Citation: Komiyama A, Ohne M and Kato S (2003). 'Comparison of vertical distribution of root weight between Hinoki cypress (Camaecyparis obtusa) and oak (Quercus crispula) individuals growing in a Hinoki plantation.' Journal of the Japanese Forest Society, 85, pp. 152-155.
DOI:
Abstract:
The dataset includes records for 2 individuals from 2 species belonging to 2 family(ies), presenting 2 functional type(s), growing in 2 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 | 2 | 36 | 36 | 36 |
| longitude | Longitude | deg | 2 | 137 | 137 | 137 |
| age | Age | yr | 2 | 32 | 40 | 48 |
| a.stba | Stem area at base | m2 | 2 | 0.051 | 0.087 | 0.12 |
| a.stbh | Stem area at breast height | m2 | 2 | 0.013 | 0.014 | 0.016 |
| a.stbc | Stem area at crown base | m2 | 2 | 0.0092 | 0.011 | 0.013 |
| h.t | Height | m | 2 | 8.3 | 10 | 12 |
| h.c | Height to crown base | m | 2 | 2.7 | 4.4 | 6.1 |
| d.ba | Basal diameter | m | 2 | 0.25 | 0.32 | 0.4 |
| d.bh | Dbh | m | 2 | 0.13 | 0.14 | 0.14 |
| h.bh | Height of d.bh measurement | m | 2 | 1.3 | 1.3 | 1.3 |
| c.d | Crown depth | m | 2 | 5.6 | 5.7 | 5.8 |
| m.so | Aboveground mass | kg | 2 | 45 | 53 | 60 |
And locally within the country:
The sites sampled are:
| Location | Longitude | Latitude | Vegetation |
|---|---|---|---|
| Japan-Experimental Forest of Gifu University- | 137.2 | 36 | Temperate forest |
The growing conditions of sampled plants was:
| Location | growingCondition |
|---|---|
| Japan-Experimental Forest of Gifu University- | field wild, plantation managed |
| Japan-Experimental Forest of Gifu University- | field wild, plantation managed |
| Species | Family | Pft |
|---|---|---|
| Quercus crispula | Fagaceae | deciduous angiosperm, evergreen gymnosperm |
| Chamaecyparis obtusa | Cupressaceae | deciduous angiosperm, evergreen gymnosperm |
Sampling strategy: The sampled Quercus crispula tree was naturally regenerated in a Chamaecyparis obtusa plantation (1040 m a.s.l., 48 years old, slope 20-23 degrees, density 1412 trees/ha, basal area 42.2 square m) and felled on 29 May to 5 June 2000 (Komiyama et al. 2003). The Chamaecyparis obtusa tree was sampled from this stand on 17-31 May 2001. Before felling, stem diameters at 0, 0.3, and 1.3 m height were measured. After felling, tree height and height and stem diameter at the lowest living branch were measured.
Stem cross sectional area: Estimated from stem diameter.
Height: Measured after trees were felled (Komiyama et al. 2003).
Biomass: Fresh weights of stem, branches, and leaves were measured. Subsamples (ca. 500 g) of each aboveground organ were oven-dried at 110 degrees C (Komiyama et al. 2003; personal communication). The dry-to-fresh mass ratios of these subsamples were used to calculate total dry mass of each tree aboveground component. Because root biomass was estimated from root density of soil samples, M.I. Ishihara excluded root biomass from this data set.
Other variables: Species name and family names were converted by M.I. Ishihara according to the following references: Satake Y, Hara H (1989a) Wild flower of Japan Woody plants I (in Japanese). Heibonsha, Tokyo; Satake Y, Hara H (1989b) Wild flower of Japan Woody plants II (in Japanese). Heibonsha, Tokyo.
This is how the study Komiyama2003 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.
