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Iijima1991
Data contributor: Akio Hagihara
Email: amyh@sci.u-ryukyu.ac.jp
Address:
- Laboratory of Ecology and Systematics, Faculty of Science, University of the Ryukyus, Okinawa 903-0213 Japan
Citation: Iijima K (1991). Growth of the stem volume of hinoki trees. Master's thesis, Faculty of Agriculture, Nagoya University, Japan.
DOI:
Abstract:
The dataset includes records for 5 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 | 5 | 35 | 35 | 35 |
longitude | Longitude | deg | 5 | 138 | 138 | 138 |
age | Age | yr | 5 | 58 | 58 | 59 |
a.lf | Leaf area | m2 | 5 | 27 | 86 | 225 |
a.stbh | Stem area at breast height | m2 | 5 | 0.022 | 0.044 | 0.067 |
a.stbc | Stem area at crown base | m2 | 5 | 0.0095 | 0.018 | 0.039 |
h.t | Height | m | 5 | 16 | 18 | 20 |
h.c | Height to crown base | m | 5 | 9.6 | 11 | 13 |
d.bh | Dbh | m | 5 | 0.17 | 0.24 | 0.29 |
h.bh | Height of d.bh measurement | m | 5 | 1.3 | 1.3 | 1.3 |
c.d | Crown depth | m | 5 | 4.4 | 7 | 9.5 |
m.lf | Leaf mass | kg | 5 | 5.3 | 20 | 46 |
m.st | Total stem mass | kg | 5 | 83 | 188 | 352 |
m.so | Aboveground mass | kg | 5 | 88 | 204 | 399 |
m.br | Branch mass | kg | 5 | 7.5 | 17 | 50 |
And locally within the country:
The sites sampled are:
Location | Longitude | Latitude | Vegetation |
---|---|---|---|
Japan-Dando-Shinsiro District Forest Office, Nagoya Regional Forest | 137.5 | 35.1 | Temperate forest |
The growing conditions of sampled plants was:
Location | growingCondition |
---|---|
Japan-Dando-Shinsiro District Forest Office, Nagoya Regional Forest | plantation managed |
Species | Family | Pft |
---|---|---|
Chamaecyparis obtusa | Cupressaceae | evergreen gymnosperm |
Sampling strategy: The allometric relationships between different dimensions of a hinoki (Chamaecyparis obtusa (Sieb. Et Zucc.) Endl.) tree were examined on the basis of 55 destructive samples, which were collected from four different stands and whose age ranged from 12 to 59 years (Hagihara1993). Only 5 sample trees are reported here. For the rest of 50 trees see Hagihara1993, Mori1991, Nakagaki1983, Tanao1982, and Yamaji1991. Biomass and leaf area estimates were determined by the stratified clip technique, in which the stratum was 0.0-0.3 m, 0.3-1.3 m, 1.3-2.3 m, and at intervals of 1 m upward.
Leaf area: Leaf area was determined with area meters (Murayama NCE-3, Hayashi AAC-100, Hayashi AAM-5) on subsamles and was then extrapolatied to total leaf area using specific leaf area from each stratum and summing up each stratum. Specific leaf area was estimated from a sample of leaves used for estimating the ratio of dry/fresh weight and area. Total leaf weight was measured for each stratum.
Stem cross sectional area: Estimated from stem diameter.
Height: Height was measured as the vertical distance from the ground surface to the highest apex of each tree.
Biomass: Trees were separated into roots, stems, branches and leaves, and then weighed. Sub-samples of the total fresh weight were taken and dried in ventilated ovens at 85 degC for a few days for fresh mass/dry mass estimates. The fresh biomass was converted into dry biomass estimates of roots, stem, branches and leaves per tree using the respective dry/fresh mass ratios.
Growth environment: Plantation managed.
This is how the study Iijima1991 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.