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评估流域属性和人类活动对河流域干旱传播的多方面的影响,采用综合框架
Ruichen Mao1, Bingjie Li1, Jinxi Song2
1Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an 710127, China.
The Science of the total environment
|March 17, 2024
概括
干旱的传播受到流域特征和人类活动的影响. 了解这些因素对于干旱地区有效的干旱减缓战略至关重要.
科学领域:
- 水文学的水文学
- 环境科学 环境科学
- 气候科学 气候科学
背景情况:
- 气象干旱传播到水文干旱对于水资源管理至关重要.
- 干旱和半干旱地区因干旱而面临重大挑战.
研究的目的:
- 调查流域属性和人类活动对河流域干旱传播的影响.
- 分析干旱传播的空间和季节异质性.
主要方法:
- 利用一个综合框架,结合土壤和水评估工具 (SWAT) 模型,标准化的干旱指数和地理探测器.
- 评估了流域属性和人类活动对干旱传播动态的影响.
主要成果:
- 干旱的传播时间从西南向东北增加,在夏季和秋季更短/更强.
- 干旱度指数是整个盆地的一个关键驱动因素,而人类活动则在子盆地占主导地位,因素之间有协同作用.
- 流域特性影响了人为影响,在特定的流域条件下 (中度干旱,坡,低海拔,小面积) 观察到强烈的人为影响.
结论:
- 流域属性和人类活动对干旱传播有复杂的相互作用影响.
- 这些发现为河流域和类似的干旱环境中针对性干旱减缓战略提供了指导.
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