Yasui1983

Report for study: Yasui1983

Contact Information

Data contributor: Masae I. Ishihara, Hajime Utsugi, Hiroyuki Tanouchi, Tsutom Hiura

Email: masaish.n@gmail.com

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

Data source

Citation: Yasui H, Fujie I and Yamamoto M (1983). 'Studies on the productive structure of Shirakashi (Cyclobalanopsis myrsinaefolia Oerst.) coppice-forest managed by selection method. 10. On the biomass in fifth circulation-period at the Shimoyamasa permanent plot.' Bulletin of the Faculty of Agriculture, Shimane University, 17, pp. 29-33.

DOI:

Abstract:

Overview of data provided

The dataset includes records for 33 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	33	35	35	35
longitude	Longitude	deg	33	133	133	133
age	Age	yr	33	14	25	43
a.stbh	Stem area at breast height	m2	33	0.00015	0.011	0.042
h.t	Height	m	33	3.2	7.9	12
d.bh	Dbh	m	33	0.014	0.12	0.23
h.bh	Height of d.bh measurement	m	33	1.3	1.3	1.3
m.lf	Leaf mass	kg	23	0.05	3	12
m.st	Total stem mass	kg	27	0.27	31	228
m.so	Aboveground mass	kg	23	0.85	56	239
m.br	Branch mass	kg	27	0.04	8.5	75

And locally within the country:

The sites sampled are:

Location	Longitude	Latitude	Vegetation
Japan-Hirose town-	133.15	35.35	Temperate forest

The growing conditions of sampled plants was:

Location	growingCondition
Japan-Hirose town-	plantation managed

Species sampled

Species	Family	Pft
Quercus myrsinaefolia	Fagaceae	evergreen angiosperm

Methods used

Sampling strategy: Thirty-nine trees were selectively cut in a Quercus myrsinaefolia coppice forest (Shimoyamasa, Hirose cho, Shimane Prefecture, Japan) in November 1980. Prior to this selective cut, the forest was selectively cut in 1959, 1962, 1966, 1969 (Yasue and Fujie 1970). By the first selective cut in 1959, the forest was made into nearly pure stand of Quercus myrsinaefolia. Within 39 felled trees, 33 sample trees were treated with the stratified clip technique by cutting them at the interval of 0.8 m and stem discs were collected. Branches and leaves were separated from stem in each 0.74 m layer and weighted for the fresh mass.

Stem cross sectional area: Estimated from stem diameter.

Height: Method not reported.

Biomass: Measured fresh mass of each component (stem, branch, and leaves) was converted to dry mass from the ratio of dry to fresh mass. The ratio was estimated from subsamples taken. For stem, discs were used for subsamples. Subsamples were oven-dried at 105 degC for 72 h. For leaves, 1.88, 1.42, and 0.47 kg of leaves were collected as subsample from the upper, middle, and lower layers. The ratio was 0.50-0.59 for stem, 0.528 for branch, and 0.388 for leaves.

Other variables: M.I. Ishihara, H. Utsugi, H. Tanouchi, and T. Hiura conducted formal search of reference databases and digitized raw data from Yasui et al. (1983). Based on this reference, meta data was also created by M.I. Ishihara. 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.

Plots of data

This is how the study Yasui1983 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.