Conservation of Water Related Environment of Watersheds with Agriculture and Forestry Landuse in Cold Region.

寒地农林用地流域水环境保护。

• 批准号: 09460104
• 负责人: NAGASAWA Tetuaki
• 金额: $ 8.32万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09460104/
• 关键词: Prevention of water environment; Water quality; Agricultural and forestry watershed; Cold region; Landuse; Material balance; Regional resource; Drainage and irrigation; 灌漑排水; 物質循環; 潅漑排水

In this project, researches were made on water and material circulation, water use and rural area management, sustainable agriculture and environmental conservaion for the agricultural and forest area in cold regions.1) Relation between land use and river water quality was investigated on Shubuto river basin, southwestern Hokkaido. Watershed including agrictural land shows high concentrations on water quality when the amount of retained water in the watershed gets less.2) Characteristics of changes in water quality during snowmelt period were investigated using the principal component analysis.3) The effect of circulating irrigation system to the water quality and material balance were examined in lowland area of Tsugaru, Aomori. Not only the output of water, but also the output of eutrophic substances to the lakes and rivers of lower raehes were reduced due to circulating irrigation.4) Regional characteristics of T-N, T-P and dissolved SiOィイD22ィエD2 concentration in river water of Hokkaido during snow melt period was investigated in conjunction with land use and soil type of each watersheds.5) Study on ion composition of snow and snowmelt water from bottom of snow cover was tested in the forest area of northern Hokkaido. It was shown that the ion component are easily released from the snow at the early stage of snowmelt period.

本项目针对寒区农林区开展了水与物质循环、水资源利用与农村管理、农业可持续发展与环境保护等方面的研究。1)研究了北海道西南部蜀步托河流域土地利用与河流水质的关系。包括农业用地在内的流域，当流域内截留水量减少时，水质集中程度越高。2)利用主成分分析研究融雪期水质变化特征。3)研究了青森津丸低洼地区循环灌溉系统对水质和物质平衡的影响。循环灌溉不仅减少了下游湖泊和河流的出水量，而且还减少了富营养化物质的出水量。4)结合北海道各流域的土地利用和土壤类型，研究了融雪期北海道河流水体中T-N、T-P和溶解态sio2的区域特征。5)对北海道北部林区积雪和积雪底部融水的离子组成进行了研究。结果表明，在融雪期初期，离子组分容易从积雪中释放出来。

项目成果

KUDO Akira: "History of water management in Tsugaru Region"The training text in Northeast branch of JSIDRE. 32. 15-20 (1998)

工藤晃：《津轻地区水管理的历史》JSIDRE东北分部的培训教材。

佐藤冬樹: "積雪底面融雪のイオン組成より見た積雪のイオンの保存性" 北海道大学附属演習林研究報告. 54-2. 175-187 (1997)

Fuyuki Sato：“从雪底部融化的雪的离子成分来看雪离子的保存性”北海道大学森林研究报告54-2（1997）。

長澤徹明: "水田水利用による水質環境への影響-北海道における調査事例-"水文・水資源学会誌. 10(5). 477-484 (1997)

Tetsuaki Nagasawa：“稻田用水对水质环境的影响 - 北海道案例研究 -”日本水文水资源学会杂志 10(5) 477-484 (1997)。

香山雅純: "Growth of dwarf bamboo community grown at cold and very windy adjacent sites in northern most Japanese as affected by snow depth"Bamboo Journal. 17(in press).

Masazumi Kayama：“受积雪深度影响，在日本北部寒冷多风的邻近地区生长的矮竹群落的生长”《竹子杂志》17（出版中）。

SATO Fuyuki, SASA Kaichiro, MASUMOTO Hitoshi and FUJIWARA Koichiro: "Ionic composition of the bottom-melt in the northern part of Hokkaido"Res. Bull. Hokkaido Univ. For.. 54-2. 175-187 (1997)

SATO Fuyuki、SASA Kaichiro、MASUMOTO Hitoshi 和 FUJIWARA Koichiro：“北海道北部底部熔体的离子组成”Res.