一个基于GIS的新型修改的多变量干旱指数,用于模拟和管理水文地质干旱 (案例研究:伊朗哈什特格尔德水库)
Mohammad Nakhaei1, Amin Mohebbi Tafreshi2, Tofigh Saadi3
1Department of Applied Geology, Faculty of Earth Sciences, Kharazmi University, Tehran, Iran.
Environmental science and pollution research international
|February 18, 2025
概括
开发了一种新的水文地质干旱指数 (MHDMI),以使用地下水质量和数量数据评估含水层状况. 该指数有助于识别脆弱地区,并指导可持续利用水资源的管理策略.
科学领域:
- 水文学的水文学
- 水文地质学 水文地质学
- 水资源管理 水资源管理
背景情况:
- 综合性干旱评估需要多变量指标.
- 现有的指数没有特别关注含水层的水地质条件.
- 地理信息系统 (GIS) 为综合干旱评估提供了一个平台.
研究的目的:
- 引入一种新的水文地质干旱指数 (MHDMI) 来评估含水层的定性和定量状态.
- 利用GIS绘制和分析水文地质干旱影响.
- 为管理易受水文地质干旱压力的地区提供框架.
主要方法:
- 开发了修改后的水文地质干旱管理指数 (MHDMI).
- 嵌入式修改标准化电导率指数 (MSECI) 用于地下水质量.
- 使用地下水资源指数 (GRI),标准化井排放指数 (SWDI) 和标准化传导性指数 (STI) 用于地下水量.
- 使用GIS进行空间分析和绘制干旱影响和管理区的地图.
主要成果:
- 根据MHDMI测绘,78%的研究区域属于"中度"级干旱.
- 该地区的重要部分被分为"低" (17%) 和"非常" (4.53%) 的干旱影响.
- 管理区确定了"有限限制利用" (53.4%) 和"有限利用" (24.8%) 的区域.
结论:
- 开发的MHDMI有效地识别和量化水文地质干旱压力.
- 管理策略应优先考虑脆弱地区,例如哈什特格德水层的西南边界.
- 该MHDMI为可持续的地下水资源管理和干旱缓解提供了一个有价值的工具.
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