Abstract:The Pearl River Delta region has formed a unique dikepond landscape after nearly a thousand years of development under the pressure of floods. Among them, Sangyuanwei was built in the Song Dynasty and is one of the most complete preserved water conservancy projects in ancient China. It has been selected as a World Irrigation Engineering Heritage. By using the method of textual research combined with on-site research, the historical evolution of Sangyuanwei is summarized, in which the landscape pattern has experienced from completely natural, to partially reformed, and then to artificial dominated. The organizational structure of landscape system of Sangyuanwei is decomposed and expounded, and the spatial morphological characteristics and cultural landscape characteristics of water conservancy system, agricultural production and settlement system are analyzed. Finally, the main factors influencing the landscape evolution of Sangyuanwei are summarized from three perspectives: the impact of water conservancy system development on land reclamation, the impact of management system development on settlement pattern, and the impact of socioeconomic development on agricultural production.
