| 干旱灌区地下水基本特征与水文地质问题——以甘肃景泰灌区为例 |
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| 引用本文： | 张明泉,曾正中. 干旱灌区地下水基本特征与水文地质问题——以甘肃景泰灌区为例[J]. 干旱区资源与环境, 1989, 0(2) |
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| 作者姓名： | 张明泉 曾正中 |
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| 作者单位： | 兰州大学地质系(张明泉)，兰州大学地质系(曾正中) |
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| 摘 要： | 本文以甘肃景泰灌区为例,讨论了干旱灌区地下水所具有的基本特征。这些特征主要表现为灌溉入渗成为地下水的主要补给出源,强烈的蒸发作用又是地下水排泄的重要形式,因而导致了灌区土壤次生盐渍化和水质恶化两个水文地质问题。
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THE BASIC FEATURES OF THE SUBTERRANEAN AND THE HYDROGEOLOGIC PROBLEMS IN THE ARID IRRIGATION AREAS |
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| Abstract: | The paper uses Jingtai irrigation areas (Gan Su province) as an examplediscussing the basic features of subterranean in arid irrigation areas. Thesefeatures indicate that the infiltration of irrigated water becomes a main rep-lenishment source for the subterranean; while the strong evaporation becomesone of the important forms for the subterranean to drain. These lead to twoproblems: a. the secondary salinization of the soil in irrigation area; b. thedeterioration of the water quality. |
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