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A Study of Water Budget in the Desert Area of Northwest China

西北沙漠地区水资源收支研究

基本信息

批准号：
02041043
负责人：
IKEBUCHI Shuichi
金额：
$ 2.56万
依托单位：
Kyoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1990
资助国家：
日本
起止时间：
1990 至无数据
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02041043/
关键词：
Desert Water Balance Heat Balance Evaporation Groundwater

项目摘要

In order to do research on processes of water and heat balances in desert area the observational systems were established and some preliminary were experiments were implemented on Heihe River Basin in Gansu.1. Survey of hydrological characteristics in Heihe areaThe Heife Area is located in the dry area along the Gobi desert. In addition to other conditions such as atmospheric forcing and land surface state. The behavior of heat balance and the real evapotranspiration in this area depend on the soil moisture near surface ground and underground because the surface ground does not keep the wet condition.This survey was done in order to obtain the data available for analysis of heat and water balances in the area and estimation of evapotranspiration. As the first step the groundwater table and its physiochemical characteristics such as PH and electrical conductivity were measured.2. Boring of observational well and holes for observing the soil moistureThe new observational well was digged by the boring machine near the basic station of desert. Its depth was 15m and groundwater level was about 4m. And in order to get the data continuously four water-level recorders were established at this new well and the existing wells.3. Measurement of thermal characteristics of sandy layer in desert area. Their results were 2.0X10^<-3>cal/cm・sec・^0 C in thermal conductivity and 0.32cal/cm^<3.0> c in heat capacity.These results will be available in the Sino-Japan Cooperational Program on hydrological observation in Heihe area (HEIFE), 1991-1993.

为了研究荒漠地区的水热平衡过程，在甘肃黑河流域建立了观测系统并进行了初步的试验.黑河地区水文特征调查黑河地区地处干旱区，沿着戈壁滩分布。除了其他条件，如大气强迫和陆地表面状态。由于地表不保持湿润状态，该地区的热量平衡和真实的蒸散量取决于近地表和地下的土壤湿度，为分析该地区的热量平衡和水分平衡，估算蒸散量提供了有效的资料。作为第一步，地下水的水位和它的物理化学特性，如pH值和电导率进行了测定.观测井和土壤水分观测孔的钻探新的观测井是在沙漠基地站附近用钻机挖成的。其深度为15米，地下水位约为4米。并在新井和现有井上设置了4个水位记录仪，以便连续获取数据.沙漠地区桑迪热特性的测定。计算结果为2.0 × 10 ~（10）<-3>cal/cm·sec·^0 C，热容0.32 cal/cm<3.0>·^0 C，这些结果将用于1991-1993年中日黑河水文观测合作项目（HEIFE）。