多尺度视角下广东乡村碧道景观规划策略研究——以广州派潭河为例

以乡村小流域碧道为研究对象,围绕其形态结构的自然多样性、功能的复合多样性和雨洪防治的急迫性等3个总体特征,针对广佛地区乡村碧道建设缺乏系统思维、景观建设同质化、重视亮点而不重视整体等问题,结合乡村碧道位于无水文资料小流域的特点,提出结合间接推求算法与数字高程模型的不同重现期雨洪淹没模拟模型,并从流域系统出发,提出多尺度视角下的景观规划策略体系：1）以挖掘乡村各方资源潜力,促进水陆联动发展为主要目标的宏观流域尺度规划策略;2）以营造多样、独特的游憩空间,人与自然和谐共处为主要目标的中观河段尺度规划策略;3）以塑造韧性河岸,提升河流自然属性为主要目标的微观河岸尺度规划策略。

Landscape Planning Strategy of Rural Ecological Belt in Guangdong from Multi-Scale Perspective: Taking the Paitan River in Guangzhou as an Example

Taking rural ecological belts situated in small watersheds as the research object, focusing on the three general characteristics of the natural diversity of its morphological structure, the composite diversity of its function, and the urgency of rainwater flood prevention and control, aiming at problems of the lack of systematic thinking, the homogenization of landscape, and the emphasis on the highlights rather than the whole in the construction of rural ecological belt in Guangzhou and Foshan, and taking into account the fact that rural ecological belts are mostly situated in small watersheds with no hydrological data, a rainfall inundation simulation model for different recurrence periods is proposed, which is based on indirect inference algorithm and digital elevation model. In addition, from the watershed system, a landscape planning strategy system under the multi-scale perspective is proposed, including a macro-watershed scale planning strategy with the main goal of tapping the potential resources of all parties in the countryside and promoting the development of land and water linkage, a mesoscale planning strategy with the main goal of creating diversified and unique recreational space, and the harmonious coexistence between humans and nature, and a micro-watershed scale planning strategy with the primary goal of shaping resilient riverbanks and enhancing the natural attributes of rivers.