| 西北干旱区地下水生态功能评价指标体系构建与应用 |
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| 引用本文： | 王金哲,张光辉,王茜,崔浩浩,刘鹏飞.西北干旱区地下水生态功能评价指标体系构建与应用[J].地质学报,2021,95(5):1573-1581. |
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| 作者姓名： | 王金哲 张光辉 王茜 崔浩浩 刘鹏飞 |
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| 作者单位： | 中国地质科学院水文地质环境地质研究所,河北石家庄,050061;自然资源部地下水科学与工程重点实验室,河北石家庄,050061;中国地质科学院水文地质环境地质研究所,河北石家庄,050061 |
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| 基金项目： | 本文为国家重点研发计划课题（编号2017YFC0406106）、国家专项基本科研业务费重大创新研究项目（编号JYYWF20180403）和国家青年基金项目（编号41807217）联合资助的成果。 |
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| 摘 要： | 西北干旱区降水稀少、蒸发强烈,水资源紧缺,自然湖泊湿地、天然植被绿洲和土壤盐渍化程度对地下水生态水位具有强烈依赖性,因此,西北干旱区地下水生态功能评价指标体系构建成为一个重要课题.本文基于对干旱区不同类型生态状况与地下水位埋深之间关系的机制研究,构建了以浅层地下水埋藏状况为核心要素的"西北干旱区地下水生态功能评价指标体系",它由地下水对自然湿地景观维持性、天然植被绿洲维持性、农田土地质量维持性及其隶属的6项要素指标构成;在石羊河流域中、下游平原区应用结果表明,该套指标体系可为西北干旱区地下水功能评价提供参考,同时还表征石羊河流域中、下游平原区地下水生态功能脆弱,生态功能较弱和弱的分布范围占示范应用区总面积的87.86％,地下水生态功能强、较强分布范围仅占5.07％.由此可见,进一步提高西北干旱区地下水生态功能保护能力刻不容缓.
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| 关 键 词： | 干旱区 地下水 生态功能 指标体系 自然湿地 荒漠化 |
| 收稿时间： | 2020/6/18 0:00:00 |
| 修稿时间： | 2020/11/23 0:00:00 |
Construction and application of evaluation index system of groundwater ecological function in northwest arid area |
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| Wang Jinzhe,Zhang Guanghui,Wang Qian,Cui Haohao,Liu Pengfei.Construction and application of evaluation index system of groundwater ecological function in northwest arid area[J].Acta Geologica Sinica,2021,95(5):1573-1581. |
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| Authors: | Wang Jinzhe Zhang Guanghui Wang Qian Cui Haohao Liu Pengfei |
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| Abstract: | The natural conditions in the arid area of northwest China are very bad, precipitation is low, evaporation is intense, and water resources are scarce. In the meantime, natural lakes and wetlands, natural vegetation oases and soil salinization are strongly dependent on the ecological water level of groundwater. Therefore, it is an important challenge to construct the evaluation index system of groundwater ecological function in northwest arid area. Based on the study of the relationship between different types of ecological conditions and groundwater table depth in arid area, the evaluation index system of groundwater ecological function in arid area of northwest is constructed using the shallow groundwater as the core factor. It is composed of 3 attribute indexes that include the maintenance of natural wetland landscape by groundwater, the maintenance of natural vegetation oases, and the maintenance of farmland land quality. The application results in the middle and lower reaches of the Shiyang River basin show that the index system may offer reference for the evaluation of groundwater function in the arid and semi- arid areas of northwest China, and it also indicates that the ecological function of groundwater in the middle and lower reaches of the Shiyang River Basin is fragile. The weak ecological function accounts for 87. 86% of the total area of the demonstration application area, while the strong and strong ecological function of groundwater accounts for only 5. 07%. Therefore, it is urgent to improve the ability of groundwater ecological function protection in arid area of northwest China. |
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| Keywords: | the arid area groundwater ecological function index system natural wetland desertification |
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