Data Set Citation:
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When using this data, please cite the data package:
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Uryu Experimental Forest, 雨龍研究林 .
tree census, Long-term observation plot No.4, Uryu experimental forest, Hokkaido, Japan, 1988-2008, 毎木調査, 長期観察林番号4号, 雨龍研究林, 北海道.
jalter_hokkaido_kita_17.4.2
(https://db.cger.nies.go.jp/JaLTER/metacat/metacat/jalter_hokkaido_kita_17.4.2/jalter-en)
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General Information: |
Title: | tree census, Long-term observation plot No.4, Uryu experimental forest, Hokkaido, Japan, 1988-2008, 毎木調査, 長期観察林番号4号, 雨龍研究林, 北海道. |
Identifier: | jalter_hokkaido_kita_17.4.2 |
Abstract: |
A mixed forest of needle-leaved and broad-leaved trees has been investigated to examine its stand structure and cutting rate and changes in the amount of forest growth. A study plot with area 0.50-ha was introduced in 1988, followed by repeated tree censuses (at5-10year interval)., 北海道大学雨龍研究林218林班針広混交林の林分構成・伐採率等とその後の生長量の推移に関する調査のため、1988年に面積0.50haの調査区を設け、10年間隔で、樹種、胸高周囲長(胸高直径)、樹高、生枯、樹幹級、被害、樹冠幅、欠点を計測している.
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Keywords: |
- long-term
- permanent plot
- Uryu
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Involved Parties
Data Set Owners: |
Individual: | Uryu Experimental Forest, 雨龍研究林 |
Organization: | Forest Research Station, Field Science Center for Northern Biosphere, Hokkaido University, 北海道大学北方生物圏フィールド科学センター森林圏ステーション |
Address: |
Moshiri, 母子里, |
Horokanai, 幌加内, Hokkaido, 北海道 074-0741 Japan, 日本 |
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Data Set Contacts: |
Individual: | Uryu Experimental Forest, 雨龍研究林 |
Organization: | Forest Research Station, Field Science Center for Northern Biosphere, Hokkaido University, 北海道大学北方生物圏フィールド科学センター森林圏ステーション |
Address: |
Moshiri, 母子里, |
Horokanai, 幌加内, Hokkaido, 北海道 074-0741 Japan, 日本 |
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Data Set Characteristics
Geographic Region: |
Geographic Description: | Plot No.4, compartment 218 in the Uryu Experimental Forest, 雨龍研究林218林班 長期観察林番号4 |
Bounding Coordinates:
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West: | 0.0 degrees
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East: | 0.0 degrees
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North: | 0.0 degrees
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South: | 0.0 degrees
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Sampling, Processing and Quality Control Methods
Step by Step Procedures
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Step 1: |
Description:
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Location, 位置
The study plot is located in compartment 218 of the Uryu Experimental Forest., 調査地は雨龍研究林218林班に位置する. The size of the study plot is 5000m2 (50×100 m; N00 00 00, E000 00 00; N00 00 00, E000 00 00; N00 00 00, E000 00 00; N00 00 00, E000 00 00 ).
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Step 2: |
Description:
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Targets to measure,測定対象
The census targeted trees with diameter at breast height (1.3 m) equal to or larger than 10-cm in the plot. Trees were identified by metal plate, and their species names were recorded., 調査区内の胸高直径10cm以上の樹木を対象とした. 金番で個体識別し、樹種名を記録した.
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Step 3: |
Description:
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Girth at breast height, 胸高直径
Description: From 1988 to 1998, diameter at breast height was measured with a caliper., 測定対象木の胸高直径を輪尺を用いて計測(1988年から1998年まで).
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Instrument(s):
| scale, 輪尺 |
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Step 4: |
Description:
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Girth at breast height(Diameter at breast height), 胸高周囲長(胸高直径)
Since 2008,girth at breast height was measured with a steel tape., 測定対象木の胸高周囲長をコンベックスを用いて計測(2008年以降).
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Instrument(s):
| steel tape, コンベックス |
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Step 5: |
Description:
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Height, 樹高
Tree height was measured by observation with a scale pole, 測定対象木の樹高を測桿ポールを用いて計測.
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Instrument(s):
| scale pole, 測桿ポール |
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Step 6: |
Description:
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Grade of wood quality 1, 樹形級
Code indication grade of wood quality, applied for coniferous forests. 1: overstory trees with good wood quality 2: understory trees, which is expectable to become a good dominant tree. 3a: Trees, which interrupt a better tree. 3b: Trees with unstraight stem or a sign of death, decay or weakening. , 樹形級区分は広葉樹林及び針広混交林に適用する。1: 優勢木 2: 下層木(将来優勢木になる可能性を持つ優良木) 3a: あばれ木 3b: 枯損木・半枯損木・被害木・形質不良木・幹形不良木・傾斜木・倒木
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Step 7: |
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Survival, 生枯
Survival of the target trees was confirmed by observation., 測定対象木の生死を確認.
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Step 8: |
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Details of wood damage, 測定対象木の欠点を記録
Special instructions on wood damage.
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Step 9: |
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Details of wood quality, 測定対象木の被害を記録
Special instructions on wood quality.
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Data Set Usage Rights
Data users are required to place an acknowledgement in any publication in which the data are used, and to send a copy of the publication with an usage report., 公表にあたっては、データの出典を謝辞等に明記するとともに、成果品および利用報告を提出する. |
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