データセットの引用情報:
このデータを利用する場合は、データパッケージを引用してください:
Shibata H.
Stream water quality in a forest basin during snowmwelt period 1997
JaLTER-Hokkaido-Kita.1388.3 (https://db.cger.nies.go.jp/JaLTER/metacat/metacat/JaLTER-Hokkaido-Kita.1388.3/jalter)
全体的な情報:
タイトル:Stream water quality in a forest basin during snowmwelt period 1997
識別子:JaLTER-Hokkaido-Kita.1388.3
要旨:
emporal sampling (six hours interval) of stream water at the M1 basin in Uryu experimental forest (JaLTER core site) during the snowmelt period in 1997. Detailed information is available in Shibata et al. (2002) at https://www.jstage.jst.go.jp/article/jahs/32/2/32_49/_article/-char/ja/ Shibata et al. (2002) Elemental budgets of forested watershed at cold snowy region, 日本水文科学会誌 32:49-56 (in Japanese with English abstract) Detailed information for hydrological observations and the site description are found in Kobayashi (1985) at https://www.sciencedirect.com/science/article/pii/0022169485900964 Kobayashi D (1985) Separation of the snowmelt hydrograph by stream temperature. Journal of Hydrology 76: 155-162
キーワード:
  • River water quality
  • Biogeochemistry
  • Ion concentration
  • Stream pH
  • snowmelt
データテーブル、画像、その他のデータの詳細:
メタデータのダウンロード: Ecological Metadata Language (EML) ファイル
データテーブル:Stream water chemistry during snowmelt period 1997 ( メタデータを表示 | ファイルをダウンロードする download)

関係者／関係団体

データセットの所有者:
個人: Hideaki Shibata
組織／団体:Hokkaido University
役職:Professor
メールアドレス:
shiba@fsc.hokudai.ac.jp
データセットの連絡先:
個人: Hideaki Shibata
組織／団体:Hokkaido University
役職:Professor
メールアドレス:
shiba@fsc.hokudai.ac.jp

データセットの特性

地理的領域:
地理的説明:Studied watershed
境界の座標:
西:  142.25  度
東:  142.25  度
北:  44.36  度
南:  44.36  度
Mimimum Altitude:290.0  meter
Maximum Altitude:545.0  meter
期間:
開始:
1997-03-29
終了:
1997-06-17

サンプリング、処理工程、品質管理の方法

処理の手順
手順 1:
説明:

General description for study site

The studied catchments are located at the Moshiri village under a very unique metrological condition that is heavy snow and very low temperature. In winter time, the maximum snow depth is usually above 2 m and the lowest temperature is often lower than - 30 ℃. The half of an annual precipitation is brought as a snow at Moshiri. In Japan archipelago generally, a heavy snowy region (for example, northern regions faced to Japan sea) is relatively warm winter compared to the small snowy region of similar latitude and altitude. Moshiri is one of the coldest and the heaviest snowy regions in Japan.
Citation:  
タイトル:Elemental budgets of forested watershed at cold snowy region
著者:
個人: Hideaki Shibata
出版日:2002
論文:
誌名:Journal of Japanese Association of Hydrological Sciences / 日本日本水文科学会誌
巻:32
号:2
ページ:49-56
手順 2:
説明:

Observation site

The observation was conducted at the M-1 basin in the Uryu Experimental Forest (UREF) of Hokkaido University (44°22' N; 142°15' E), located in the northern part of Hokkaido, Japan. The watershed area was 1.3 km2, and the altitude was 290-545 m a.s.l. The predominant bedrock is Tertiary andesite, and the soil is mainly acidic brown forest soil. The vegetation is mixed forest, and the predominant species include Abies sachalinensis, Quercus mongolica, Betula platyphylla, Acer mono, Kalopanax pictus and Phellodendron amurense. The forest floor is covered with dense bamboo (1-2 m height). The mean annual temperature in the open area of the lowland was approximately 2.5 °C, and the annual precipitation was about 1400 mm. The maximum snow depth was about 2 m on average.
手順 3:
説明:

Observation items and period

The amount of water and its chemical composition in stream water were investigated during the snowmelt period from mid-March to mid-June 1997. A gauging station was installed at the outlet of the basin, where discharge and conductivity were monitored continuously.
手順 4:
説明:

Observation methods

Discharge was determined for the continuous water stage at a 2-m wide, broad-crested weir and for a 90° V-notch, sharp-crested weir. Stream water for chemical analysis was sampled by an automatic water sampler (ISCO Co., model 2700). Automatic sampling was conducted at the lowest discharge (6:00 – 8:00) and the highest discharge (18:00 – 20:00) each day (i.e., 12 hours intervals).
Citation:  
タイトル:Separation of the snowmelt hydrograph by stream temperature
著者:
個人: Daiji Kobayashi
出版日:1985
論文:
誌名:Journal of Hydrology
巻:76
ページ:155-162
使用機器: Automatic water sampler (ISCO Co., model 2700)
手順 5:
説明:

Chamical analysis

Electoronic conductivity (EC) and pH were both measured using electrodes (glass electrode for pH and EC meter for EC). Inorganic cations (Na, NH4, K, Ca2+, Mg2+) and anions (Cl-, NO3- and SO42-) were measured by ion chromatography (TOA Co Ltd., Japan).
使用機器: Ion chromatography (TOA Co Ltd., Japan).

データセットの利用条件

アクセス制御:
認証システム:JaLTER
適用順序:allowFirst
許可: [read] public
追加のメタデータ
メタデータのダウンロード: Ecological Metadata Language (EML) ファイル