北方暴雨频发，多地突发山洪！对话水文专家徐宗学：防洪何以“为水让路”

Core Viewpoint - The recent tragic event in Inner Mongolia highlights the urgent need to improve disaster prevention systems in the face of extreme weather, particularly in northern regions that are traditionally less prone to heavy rainfall [1][2]. Group 1: Flood Prevention Strategies - Xu Zongxue emphasizes the importance of creating temporary flood retention areas through urban renewal and village renovations, such as sunken parks and artificial lakes, to manage extreme rainfall [2][3]. - The current flood prevention system in northern cities has significant weaknesses, particularly in areas not covered by major river protections or sponge city initiatives [3][4]. Group 2: Historical Context and Evolution of Flood Management - Since the 1998 Yangtze River flood, China has invested heavily in flood management, focusing initially on major rivers and later shifting to smaller river systems over the past decade [5][7]. - The concept of sponge cities has evolved to integrate urban water management systems, addressing both common rainfall and extreme flooding events [11][12]. Group 3: Public Awareness and Preparedness - Public education on flood risks and safety measures is crucial, especially in light of recent tragedies caused by flooding in areas where people underestimated the risks [22][23]. - Community efforts, such as clearing drainage systems and preparing emergency supplies, can significantly mitigate the impact of minor flooding events [22][23]. Group 4: Technical and Infrastructure Recommendations - There is a need for a unified standard for flood management across different governmental departments to improve coordination and effectiveness [17][18]. - Enhancing urban drainage capacity, increasing floodwater retention areas, and utilizing green infrastructure are essential strategies for improving urban resilience against flooding [19][20].