Suzuki1990
Data contributor: Takeshi Tange
Email: tange@fr.a.u-tokyo.ac.jp
Address:
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
Citation: Suzuki M, Tange T, Suzuki T and Suzuki S (1990). 'Growth and biomass of manmade Zelkova serrata stands in Tokyo University Forest in Chiba.' Bulletin of the Tokyo University Forests, 82, pp. 113-129.
DOI:
Abstract:
The dataset includes records for 20 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 | 20 | 35 | 35 | 35 |
| longitude | Longitude | deg | 20 | 140 | 140 | 140 |
| age | Age | yr | 20 | 31 | 48 | 65 |
| a.lf | Leaf area | m2 | 20 | 4.5 | 37 | 380 |
| a.stbh | Stem area at breast height | m2 | 20 | 0.0025 | 0.018 | 0.15 |
| h.t | Height | m | 20 | 8.8 | 17 | 26 |
| d.bh | Dbh | m | 20 | 0.056 | 0.15 | 0.44 |
| h.bh | Height of d.bh measurement | m | 20 | 1.3 | 1.3 | 1.3 |
| m.lf | Leaf mass | kg | 20 | 0.19 | 1.8 | 31 |
| m.st | Total stem mass | kg | 20 | 7.2 | 115 | 1563 |
| m.so | Aboveground mass | kg | 20 | 7.4 | 117 | 1594 |
| m.br | Branch mass | kg | 20 | 0.79 | 15 | 232 |
And locally within the country:
The sites sampled are:
| Location | Longitude | Latitude | Vegetation |
|---|---|---|---|
| Japan-Chiba Forest of Tokyo University, Koyano-sawa-Compartment 8, D2 | 140.1 | 35.2 | Temperate forest |
| Japan-Chiba Forest of Tokyo University, Nino-sawa-Compartment 39, B7 | 140.1 | 35.2 | Temperate forest |
The growing conditions of sampled plants was:
| Location | growingCondition |
|---|---|
| Japan-Chiba Forest of Tokyo University, Koyano-sawa-Compartment 8, D2 | plantation managed |
| Japan-Chiba Forest of Tokyo University, Nino-sawa-Compartment 39, B7 | plantation managed |
| Species | Family | Pft |
|---|---|---|
| Zelkova serrata | Ulmaceae | deciduous angiosperm |
Sampling strategy: Sampling was conducted in the University Forests in Chiba, the University of Tokyo (Suzuki et al. 1990). Twenty trees were felled in Zelkova serrata plantations at Koyanosawa (31 years old) on August 22-24, 1988 and at Ninosawa (65 years old) on August 30-31, 1988. The sample trees were cut at ground level then treated with the stratified clip technique by cutting them into parts contained in horizontal layers of 0-0.3 m, 0.3-1.3 m, at intervals of 2 m upward.
Leaf area: Individual leaf areas of ca. 20 leaves were measured for each layer by an automatic planimeter (Planimex 25, Nireco) before oven-dried at 85 degree C and weighted (Suzuki et al. 1990). Total leaf area for each layer was estimated from the total dry mass of leaves and the obtained leaf area/leaf mass ratios.
Stem cross sectional area: Estimated from stem diameter.
Height: Measured by measuring tape after the trees were felled.
Biomass: Fresh mass of stem, branches, and leaves in each layer were measured (Suzuki et al. 1990). Woody parts with diameter smaller than 7 cm were classified as branches. Measured fresh mass was converted to dry mass from the ratio of dry to fresh mass. To obtain the ratio of branch and leaves, subsamples were taken for each layer. For the ratio of stem, a disk was taken from each layer. Subsamples were weighted for fresh mass, oven-dried at 85 degree C, and weighted for dry mass.
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 Suzuki1990 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.
