Study on effects of forest types on river-water quantity and quality in mountainous regions

山区森林类型对河流水量和水质的影响研究

• 批准号: 05454081
• 负责人: TSUKAMOTO Yoshinori
• 金额: $ 4.16万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05454081/
• 关键词: Forest types; River-water; Stream discharge; Water chemistry; Nitrogen cycle; Stand structure; 窒素の環境

The purpose of this project is to clarify the effects of forest types on river-water quality and quantity in mountainous regions. Hydrological and hydrogeochemical observations were carried out on several small watersheds in Tama hill and Kanto mountain with various types of forests. Soil chemistry and soil property on hydrological conditions were investigated.A quasi-physical runoff model for catchment-scale was developed, representing heterogeneity of soil characteristics in forested catchments. The effects of forest cover on runoff characteristics were investigated by using the model. The model performed well the observation results, suggesting that the differences of runoff characteristics come from the differences of soil properties, such as soil depth and water retention curve, caused by forest types.Processes of changes in water chemistry were investigated. Nitrogen Cycle in forested watersheds were focused on by using stable isotopes.

该项目的目的是弄清森林类型对山区河流水质和水量的影响。在多摩山和关东山的几个有各种森林类型的小流域进行了水文和水文地球化学观测。研究了水文条件下土壤化学和土壤性质的变化，建立了流域尺度的准物理径流模型，以反映森林流域土壤性质的异质性。利用该模型研究了森林覆盖对径流特性的影响。模型模拟结果与实测值吻合较好，说明不同林型的径流特征差异主要来自于不同林型的土壤性质差异，如土壤深度、持水曲线等。利用稳定同位素研究了森林流域的氮循环。

项目成果

大類清和,他: "森林小集水域での水質過程の変化" 水文・水資源学会誌. 8. 367-381 (1995)

Kiyokazu Osui 等人：“小森林流域水质过程的变化”日本水文水资源学会杂志 8. 367-381 (1995)。

戸田浩人 他: "森林土壌中における窒素無機化の反応速度論的解析(I)" 日本林学会誌. 76. 141-151 (1994)

Hiroto Toda 等：“森林土壤中氮矿化的动力学分析（I）”日本林业学会杂志 76. 141-151（1994）。

Jwupei Kubota: "Towards a Catchmeut ・ Sacle Model otSubsurface Kunoff Generation" Hydrologiacl Proasses. (in press). (1995)

Jwupei Kubota：“迈向 Catchmeut·Sacle 模型 otSubsurface Kunoff Generation”水文过程（1995 年）。

Kiyokazu Ohrui et.al.: "The effects of some factors on stream chemicals os small forested watersheds." Journal of the Japanese Forestry Society. 76. 383-392 (1994)

Kiyokazu Ohrui 等人：“某些因素对小型森林流域河流化学物质的影响。”

大類清和 他: "森林集水域での土壌から渓流への水質変化" 日本林学会誌. 75. 389-397 (1993)

Kiyokazu Osui 等：“森林流域从土壤到山溪的水质变化”日本林业学会杂志 75. 389-397 (1993)。