我省世界灌溉工程遗产数量已达4处，至今仍发挥着不可或缺的作用 “活着”的遗产彰显川人治水智慧

Core Viewpoint - The successful inclusion of Pengzhou Qianjiang Weir in the 2025 World Irrigation Heritage List highlights the importance of ancient irrigation systems in modern agricultural practices and their sustainable management of water resources [2][5]. Summary by Relevant Sections Irrigation Heritage - The number of World Irrigation Heritage sites in Sichuan Province has reached four, with the recent addition of Pengzhou Qianjiang Weir [2]. - The heritage system includes water engineering relics, non-water engineering relics, and intangible cultural heritage, showcasing a living history of water management wisdom [2]. Unique Features of Qianjiang Weir - Qianjiang Weir utilizes the geographical advantage of a northwest high and southeast low terrain, employing a "Pingliang" water distribution technique to create a water network that addresses seasonal water imbalances [3][4]. - The system incorporates both surface water (Qianjiang) and groundwater (Xiaoyuan Spring), with over 300 self-flowing springs constructed to supplement water supply during dry periods, demonstrating advanced ancient water resource management [4]. Contribution to Agriculture - The Qianjiang Weir currently irrigates 162,000 acres of farmland, extending agricultural production to the edges of the Longmen Mountains and Chengdu Plain, supporting the cultivation of rice and other crops [4]. - The four irrigation heritage sites collectively irrigate approximately 12 million acres, equivalent to the area of 40 large irrigation districts, with the Dujiangyan irrigation area alone covering 11.647 million acres, contributing significantly to food production and GDP [6]. Cultural and Economic Integration - The integration of cultural and tourism development around these irrigation heritage sites is being explored, with initiatives to create water culture experiences and leisure agriculture products [7]. - The establishment of the "Large Irrigation District" cultural tourism development alliance in 2020 aims to enhance the visibility and economic value of these heritage sites [7].