Nature-Based Solutions for Restoring Rivers and Streams

河流和溪流是全球生态系统的关键组成部分。人类的改变和污染使它们中的许多已经不能再提供充分的生态服务和功能。近年来，在恢复河流和溪流方面投入了大量努力，以改善它们的健康，促进生物多样性，并增加复原力。在许多修复解决方案中，越来越多地采用那些模仿自然工作方式的修复方案，例如将木材重新引入河流和溪流。然而，这些基于自然的解决方案的知识库可以通过改进对修复结构周围物理过程的科学理解来增强。这项研究的一个主要目标是改善以自然为基础的河流和蒸汽恢复方法的知识库。本文所使用的研究方法利用了最先进的计算技术，这使得解决修复结构的复杂几何问题成为可能。预计该项目将揭示修复结构周围和内部的物理过程。对物理过程的理解是成功实施基于自然的解决方案的关键。具有生态功能的河流和溪流为生活在其周围的社区增加了巨大的社会经济价值。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

Rivers and streams are a key component of the global ecosystem. Human alteration and pollution have made many of them no longer able to provide full ecological services and functions. In recent years, substantial efforts have been invested in restoring rivers and streams to improve their health, promote biodiversity, and increase resiliency. Among many restoration solutions, those mimicking how Nature works are increasingly employed, e.g., the re-introduction of wood into rivers and streams. However, the knowledge base for these nature-based solutions can be enhanced by improved scientific understanding on the physical processes around restoration structures. A principal objective of this research is to improve the knowledge base for nature-based approaches for river and steam restoration. The research approach to be used in this work utilizes state-of- the-art computing technology which makes it feasible to resolve the complex geometry of the restoration structures. It is anticipated that this project will reveal the physical processes around and within restoration structures. The understanding of physical processes is critical to successful implementation of nature-based solutions. Ecologically functional rivers and streams add great socio-economic value to the communities living around them.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.