Hybrid modeling approach to assess the sustainability of hydrological systems

评估自然和人为水文和环境系统(例如，恢复的分水岭、流域基础设施、城市排水系统)的可持续性主要依靠数学建模，以便能够长期模拟和展示有关系统的性能。在这项研究中，将发展一种水文系统的混合建模方法。混合方法被定义为包括或集成多个(至少两个)模型的建模系统。这些模型可以是基于物理的，其中应该有足够的物理过程知识，或者当物理过程的知识不存在或不完整时，可以采用数据驱动的模型。将对拟议的混合建模方法和由此产生的混合模型的建模精度、适应各种不确定性源和计算效率进行评估，其中包括计算时间和处理能力以及它们对最终系统管理决策的影响。拟议的研究将得到验证，并应用于多个案例研究，例如，对阿尔伯塔省北部恢复的流域和萨斯喀彻温省BOREAS项目的天然林地的各种水文过程(如土壤水分含量、实际蒸散、径流)进行建模。

The assessment of the sustainability of natural and human-made hydrological and environmental systems (e.g., restored watersheds, watershed infrastructure, urban drainage systems) relies mainly on mathematical modeling to allow for long-term simulation and presentation of the performance of the system in question. In this research, a hybrid modeling approach for hydrological systems will be developed. The hybrid approach is defined as a modeling system that includes or integrates multiple (at least two) models. These models can be physically based where sufficient knowledge of the physical processes should be available or data-driven models that can be employed when the knowledge of the physical processes is absent or incomplete. The proposed hybrid modeling approach and the resulting hybrid models will be evaluated in terms of their modeling accuracy, accommodation of various sources of uncertainty, and computational efficiency, which includes computational time and tractability as well as their impact on the final system management decisions. The proposed research will be validated and applied to a multiple case studies, such as, modeling the various hydrological process (eg., soil moisture content, actual evapotranspiration, runoff) in restored watersheds in northen Alberta and natural forested sites from the BOREAS project in Saskatchewan.