河流系统是地球水文循环与物质-能量转换的重要载体。河流受到地形地貌、气候条件、人为活动等影响,水文状态也存在差异,间歇性河流由于其流量丰涨-断流的变化特征,在河流系统中具有特殊性。目前国内外成熟的河流景观规划设计实践多以常年性河流治理理论与技术为核心,间歇性河流的景观规划则受到社会认知、水文监测、理论技术的制约而缺乏针对性。当前我国西北地区存在大量间歇性河流。这些河流既具有水文间歇性的变化特征,也存在水土流失、生态系统脆弱等综合性问题,是我国间歇性河流景观规划设计领域内研究和实践的重点对象。 首先本文研究了间歇性河流的基本特征、形成因素和间歇性河流价值,并对相关理论、技术以及案例进行整理,总结间歇性河流景观规划设计理论与实践的技术手段与工作思路。 其次本文以宁夏回族自治区固原市马饮河流域作为研究对象,通过实地踏勘与访谈形式了解流域基本状况,提出该流域内规划设计的科学问题并结合定性和定量化研究方式对问题进行分析。而后根据流域分析研究总结现状问题,制定了具体的景观规划目标。接着以规划目标为导向,对马饮河流域进行综合的流域景观规划设计。在总体景观规划空间结构的基础上构建了生态防洪、水质与水土保持、生境修复以及游憩网络四大策略体系。 最后本文以流域内下游河口段作为具体实施的设计场地。在对场地进行剖析后提出了多样化生境系统、开放式滨河空间以及综合性游憩系统三大设计策略。以策略为导向进行了具体的设计。 笔者希望通过此次研究与设计,探讨总结西北地区间歇性河流景观规划设计的核心理念、技术要点、实施策略等内容,为该地区相似河流的治理实践提供参考,也为风景园林在间歇性河流规划设计实践中提供工作思路及方法借鉴。
River system is an important carrier of the Earth‘s hydrological cycle and material- energy exchange. Rivers are affected by topography, climate conditions, human activities, and other factors, resulting in differences in hydrological conditions. Intermittent rivers have unique characteristics in river systems due to their varying flow patterns from high to low. At present, mature river restoration practices at home and abroad mostly focus on the theory and technology of perennial river restoration, while intermittent river ecological restoration practices are limited by social cognition, hydrological monitoring, and theoretical technology, lacking pertinence. Currently, there are a large number of intermittent rivers in the northwest region of China. These rivers not only have the characteristics of intermittent hydrological changes, but also have comprehensive problems such as soil erosion and fragile ecosystems, making them key objects of research and practice in intermittent rivers in China. Firstly, this article studies the basic characteristics, formation factors, and value of intermittent rivers, and organizes relevant ecological restoration theories, technologies, and cases to summarize the technical means and work ideas of ecological restoration theory and practice for intermittent rivers. Secondly, this paper takes Mayin River Basin in Guyuan City, Ningxia as the research object, understands the basic situation of the basin through field survey and interviews, puts forward scientific problems in the practice of ecological restoration of the basin, and analyzes the problems in combination with qualitative and quantitative research methods. Then, based on the analysis and research of the watershed, the current situation and problems were summarized, and specific ecological restoration goals were formulated. Then, guided by the restoration goals, a comprehensive ecological restoration plan will be carried out for the Mayin River Basin. Based on the overall ecological restoration spatial structure, four strategic systems have been constructed: ecological flood control, water quality and soil conservation, habitat restoration, and recreational networks. Finally, this article takes the downstream estuary section of the watershed as the specific implementation site for ecological restoration design. After analyzing the site, three design strategies were proposed: diversified habitat systems, open riverside spaces, and comprehensive recreational systems. A specific design was carried out with a strategy orientation. I hope to explore and summarize the core concepts, technical points, and implementation strategies of intermittent river ecological restoration in the northwest region through this research and design, providing reference for the restoration practice of similar rivers in the region, and also providing work ideas and methods for landscape architecture in the practice of intermittent river ecological restoration.