Quantitative evaluation of roles of farm land on water resource.

农田对水资源作用的定量评价。

• 批准号: 07660324
• 负责人: TAKASE Keiji
• 金额: $ 1.34万
• 依托单位: EHIME University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07660324/
• 关键词: forest and farm land; evapotranspiration; rainfall loss; draft discharge; stabilization of stream flow; groundwater level; groungwater recharge; 農林地の公益的機能; 流域水循環; 地下水; 水資源; 長期間流出解析; 渇水緩和機能; 水収支モデル

It is very important to evaluate quantitatively roles of farm land on hydrologic cycle and water resource in regions. In this project, investigations and researches have been carried out in some experimental catchments and a alluvial plane to evaluate the roles.The results are summarised as follows for the catchments ;1. The analysis of evapotranspiration from the catchments revealed that evapotranspiration depends on wetness of the catchment and the dependency is more dominant in the upland filed.2. Rainfall loss is infuluenced by the initial condition of wetness and the percolation property. The comparison of estimated intensities of percolation in the catchment showed that the intensity is influenced by the type of soils and land use.3. A method was proposed to evaluate quantitatively the role of catchments on stream flow. A index of flow stabilization was defined and the values of the index were compared between the forest catchment and upland field catchment. It was shown that the forest keeps stream flow more stable than the upland field.The results for the alulvial area are ;4. The water budget analysis in the surface region showed that the groundwater recharge in irrigation periods is more than in non-irrigation ones and it means the importance of paddy field for the groundwater in the region.5. A lumped parametric model, which included the groundwater system, was developed to analyze the hydrologic cycle to evaluate the water balance in the region.

定量评价农田对区域水循环和水资源的作用具有重要意义。本项目在部分试验集水区和一个冲积面进行了调查研究，以评价其作用。对小流域蒸散量的分析表明，蒸散量取决于小流域的湿度，且这种依赖性在高地更为明显.降雨损失受初始湿度条件和入渗特性的影响。通过对不同土壤类型和土地利用方式下的土壤渗漏强度的比较，表明土壤渗漏强度受土壤类型和土地利用方式的影响.提出了一种定量评价流域对径流影响的方法。定义了径流稳定性指标，并对森林集水区和高地集水区的径流稳定性指标值进行了比较。结果表明，林地比高地能更稳定地保持径流。地表水收支分析表明，灌溉期地下水补给量大于非灌溉期，说明稻田对该区域地下水的重要性.建立了一个包含地下水系统的集总参数模型，分析了该地区的水文循环，评价了该地区的水平衡。

项目成果

K.TAKASE: "Study of Rainfall Loss based on the Conception of Water Budget (in Japanese)" Applied Hydrology. No.8. 11-16 (1995)

K.TAKASE：“基于水收支概念的降雨损失研究（日语）”应用水文学。

高瀬 恵次: "渇水緩和機能の定量的評価に関する研究(1)" 農業土木学会大会 講演要旨集. Vol.9(1). 196-197 (1995)

高濑敬二：《抗旱功能的定量评价研究（1）》日本农业土木工程学会会议摘要第9卷（1）（1995年）。

J.HUANG: "Application of Green-Ampt Equation to Long Term Runoff Analysis (in Japanese)" Journal of Japan Soc.Hydrol.& Water Resources. Vol.9 (1). 38-47 (1996)

J.HUANG：“Green-Ampt 方程在长期径流分析中的应用（日文）”Journal of Japan Soc.Hydrol。

高瀬 恵次: "雨水保留量に関する水収支的考察" 応用水文. No.8. 11-16 (1995)

Keiji Takase：“关于雨水保留的水平衡考虑”应用水文学第 8 期（1995 年）。

黄介生: "定常降雨条件下での浸入実験およびMein-Larsonモデルの適用" 水文・水資源学会誌. 8巻・4号. 382-388 (1995)

黄开胜：“稳定降雨条件下的入渗实验及Mein-Larson模型的应用”，日本水文学会学报，第8卷，第4期。382-388（1995年）。