Data Set Citation:
When using this data, please cite the data package:
Nakagawa Experimental Forest, 中川研究林 .
tree census, Long-term observation "Management Examination Forests No.2", Nakagawa experimental forest, Hokkaido, Japan, 1978-1994, 毎木調査, 長期観察林経営試験林2号, 中川研究林, 北海道.
jalter_hokkaido_kita_14.21.1 (https://db.cger.nies.go.jp/JaLTER/metacat/metacat/jalter_hokkaido_kita_14.21.1/jalter-en)
General Information:
Title:tree census, Long-term observation "Management Examination Forests No.2", Nakagawa experimental forest, Hokkaido, Japan, 1978-1994, 毎木調査, 長期観察林経営試験林2号, 中川研究林, 北海道.
Identifier:jalter_hokkaido_kita_14.21.1
Abstract:
"A natural forest has been investigated to examine effect of harvesting on its stand structure and dynamics. A study plot with area 0.50-ha was introduced in 1978, followed by repeated tree censuses (at 8 year interval)., 伐採による天然林の林分構造および動態への影響を調べるため、北海道大学中川研究林179林班（経営試験林）に、面積0.50haの調査区を設け、1978年から8年間隔で、本数、胸高周囲長、生枯を計測している"
Keywords:
  • long-term
  • permanent plot
  • Nakagawa

Involved Parties

Data Set Owners:
Individual: Nakagawa Experimental Forest, 中川研究林
Organization: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
Address:
Otoineppu, 音威子府,
Nakagawa, 中川, Hokkaido, 北海道 098-2501 Japan, 日本,
Nakagawa, 中川, Hokkaido, 北海道 Nakagawa, 中川 Japan, 日本
Phone:
+81-1656-5-3216 (voice)
Phone:
+81-1656-5-3218 (fax)
Email Address:
tomak@fsc.hokudai.ac.jp
Web Address:
http://forest.fsc.hokudai.ac.jp/~exfor/Nkef/indexNk.htm
Data Set Contacts:
Individual: Nakagawa Experimental Forest, 中川研究林
Organization: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
Address:
Otoineppu, 音威子府,
Nakagawa, 中川, Hokkaido, 北海道 098-2501 Japan, 日本,
Nakagawa, 中川, Hokkaido, 北海道 Nakagawa, 中川 Japan, 日本
Phone:
+81-1656-5-3216 (voice)
Phone:
+81-1656-5-3218 (fax)
Email Address:
tomak@fsc.hokudai.ac.jp
Web Address:
http://forest.fsc.hokudai.ac.jp/~exfor/Nkef/indexNk.htm

Data Set Characteristics

Geographic Region:
Geographic Description:Plot "Management Examination Forest No.2", compartments 179 in the Nakagawa Experimental Forest., 中川研究林179林班　長期観察林経営試験林2号
Bounding Coordinates:
West:  142.25  degrees
East:  142.375  degrees
North:  44.625  degrees
South:  44.5  degrees
Time Period:
Date:
1978
Time Period:
Date:
1986
Time Period:
Date:
1994

Sampling, Processing and Quality Control Methods

Step by Step Procedures
Step 1:
Description:

Location, 位置

The study plot is located in compartment 179 of the Nakagawa Experimental Forest., 調査地は中川研究林179林班に位置する. The size of the study plot is 5000m2 (50×100 m).
Step 2:
Description:

Targets to measure, 測定対象

The census targeted trees with girth at breast height (1.3 m) equal to or larger than 18-cm in the plot. Trees were identified by metal plate, and their species names were recorded., 調査区内の胸高周囲長18cm以上の樹木を対象とした．金板で個体識別し、樹種名を記録した．
Step 3:
Description:

Diameter at breast height, 胸高直径

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．
Instrument(s): caliper, 輪尺
Step 4:
Description:

Survival, 生枯

"Survival of the target trees was confirmed by observation.,

測定対象木の生死を確認."

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.
Access Control:
Auth System:knb
Order:allowFirst
Allow: [read] public
Metadata download: Ecological Metadata Language (EML) File