黄河流域水资源保护的动态演变趋势和驱动机制,中国
Gaolei Zhao1, Shimin Tian2, Shuai Liang1
1Henan Key Laboratory of YB Ecological Protection and Restoration, Yellow River Institute of Hydraulic Research, YRCC, Zhengzhou, 450003, China.
Scientific reports
|November 2, 2024
概括
黄河流域 (YRB) 的水资源保护至关重要. 森林和牧场对节水有着显著的贡献,降水是主要的驱动因素,突出了对关键地区有针对性的管理的需要.
科学领域:
- 水文学的水文学
- 生态生态学 生态生态学
- 环境科学 环境科学
背景情况:
- 水资源保护 (WC) 是黄河流域 (YRB) 的一个关键的生态服务.
- 对于在YRB中WC的时空动力学和驱动机制的理解有限.
- 本研究解决了对WC流程和影响因素在YRB中进行全面分析的需求.
研究的目的:
- 研究从1960年到2020年在黄河流域保护水的时空特征.
- 识别和分析影响水资源保护动态的主要驱动力.
- 为加强水资源保护和促进该地区可持续发展提供科学见解.
主要方法:
- 使用土壤和水资源评估工具 (SWAT) 建立了一个大规模的水资源保护模型.
- 采用了统计和分析技术,包括突然变化测试,EOF,波纹分析,HPA,地质探测器和干旱度指数.
- 利用来自DEM,土地利用,土壤,气象学,水库和观察到的排放数据进行综合分析.
主要成果:
- 年龄限制区的平均WC为9.11mm (74.68 × 10^8 m3),森林和牧场的贡献很大 (分别为48.65%和22.05%).
- 观察到WC的独特空间模式,在盆地范围内存在差异.
- 降水成为WC变化的主要驱动因素,其与实际蒸发透气的相互作用是最重要的. 干旱对WC产生了负面影响.
结论:
- 森林和牧场是YRB水资源保护能力的关键贡献者.
- 降水是影响WC的主要因素,强调了气候在水资源管理中的作用.
- 关键的水资源保护区的有效保护和管理对于YRB的生态改善和可持续发展至关重要.
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