Abstract:In response to the limited application of mapping in complex contemporary landscapes, this study examines how mapping can support landscape perception and design accross macro and micro scales. Using the urbanization transformation of the polder landscape in Nansha District, Guangzhou, as a case study, the research applied pattern language to extract existing landscape structures and identify three urbanization strategies. Through the Research through Design (RtD) approach, simulations of combined scenarios indicated that prioritizing traditional polder structures leads to greater ecological sustainability. At the micro scale, walking-based surveys and human-perspective mapping were used to reveal spatial features and local knowledge. By integrating findings from both scales, a strategic design framework was proposed to reconcile traditional landscape structures with modern urban functions. This study demonstrates that mapping serves not merely as a means of representation but as an exploratory design medium—enabling strategies to emerge through iterative investigation of site-specific data—thereby affirming its practical value in contemporary landscape planning.