大理阳溪绿色低影响生态修复研究

Research on Green Low-impact Ecological Restoration of Yangxi River in Dali

摘要:

小流域入湖河道综合整治是一项复杂系统工程。以大理阳溪综合治理为例，探讨绿色低影响生态修复（green low-impact ecologi-cal restoration， GLIER）在小流域治理中应用。阳溪为洱海重要入湖河道，面临水土流失、水质恶化及生态退化等问题。传统河道治理方法忽视生态与景观协调，难以实现可持续性和生态修复目标。提出一种基于GLIER理念小流域治理模式，强调恢复河道自然生态功能、改善水质、增强生物多样性、保护生态景观等综合措施。研究表明，阳溪综合治理在恢复自然河道形态同时，强化防洪能力与水质净化效果，为洱海流域生态保护与治理提供有益示范，可为我国湖泊富营养化治理与入湖河道生态修复提供科学依据和技术参考。

Abstract:

The comprehensive management of small watershed entering lake is a complex systematic project. Taking the comprehensive regulation project of Yangxi River in Dali as an example, the application of green low-impact ecological restoration (GLIER) in small watershed management is discussed. Yangxi River, as a major river into Erhai Lake, faces the problems of soil erosion, water quality degradation and ecological deterioration. The traditional river management approaches often fail to address the coordination between ecology and landscape, which is hard to realize the sustainable and ecological restoration goals. A small watershed management model based on the GLIER concept is proposed to emphasize the integrated measures such as restoring the natural ecological functions, improving the water quality, enhancing the biodiversity and protecting the ecological landscape of the rivers. The study demonstrates that the comprehensive management of Yangxi River not only restores the natural shape of the river, but also enhances its flood control capacity and water purification effect, which provides a valuable example for the ecological protection and management of the Erhai Lake basin, and can provide the scientific basis and technical references for the management of lake eutrophication and the ecological restoration of river flowing into lake in China.