让“穿堂风”给市中心区域降温

Core Viewpoint - The article discusses the exacerbation of the "urban heat island effect" in Shanghai, particularly in the Xuhui District, and suggests the construction of a cooling system comprising "cold sources—wind corridors—green networks" to mitigate extreme summer temperatures [1][2]. Group 1: Urban Heat Island Effect - Last summer, Shanghai experienced a record-breaking 25 consecutive days with temperatures exceeding 35°C, highlighting the severe urban heat island effect [1]. - There are significant temperature disparities within the city, with differences of 5°C to 8°C between urban areas and suburban regions, and up to 10°C between shaded and unshaded areas within Xuhui District [1][2]. Group 2: Proposed Solutions - The proposal includes utilizing natural cold sources such as the Huangpu River and green spaces, and developing a multi-layered wind corridor system to alleviate heat intensity [2]. - Recommendations also include enhancing ecological green networks and designing "pocket parks" for year-round use to create a climate-adaptive demonstration area [2][4]. Group 3: Wind Corridor Development - The establishment of two primary wind corridors is suggested: the "Huangpu River—Inland Corridor" and the "Botanical Garden—Hub Corridor," along with optimizing secondary ecological wind channels [3]. - New road constructions should be designed to be wide and straight to improve airflow, and a "wind corridor control zone" should be established to regulate building heights and densities [3]. Group 4: Ecological Enhancements - The article emphasizes the need for ecological river modifications to enhance water flow and cooling effects, as well as the promotion of high-performance permeable pavements and shading structures [4]. - A comprehensive ecological green network should be developed, particularly in new areas, and existing urban areas should undergo updates to increase tree coverage and improve microclimate conditions [4].