全城再迎“落叶不扫”景观 以乌桕为特色的宾南路首次加入名单

Core Insights - The annual "fallen leaves carpet" event in Shanghai has seen a delay in the announcement of the "no sweeping" roads list, which is now one week later than last year [1] - The timing of leaf color change and drop has been affected by climate changes, with many plants showing delayed leaf changes concentrated in late November to December [1][2] - The management of "no sweeping" roads has been adjusted to address information asymmetry, with dynamic updates based on feedback from sanitation workers and green management departments [2] Group 1 - The list of 44 "no sweeping" roads was announced later than usual, with the earliest activation on December 1 for some roads, while others will not start until mid-December [1] - The phenomenon of delayed leaf color change and drop is attributed to recent climate conditions, including extreme summer heat and insufficient cold air in autumn [1] - The responsibility for managing the "no sweeping" roads primarily lies with sanitation departments, which have faced challenges in timing the activation and deactivation of these roads [1] Group 2 - The management mechanism for "no sweeping" roads has been revised in Yangpu District to better reflect actual conditions and professional predictions [2] - The selection of "no sweeping" roads now considers regional characteristics, historical context, and current road conditions, leading to a more tailored approach [2] - The variety of tree species designated for "no sweeping" roads has expanded from primarily sycamore to include multiple species such as ginkgo, maple, and others [2][3] Group 3 - The introduction of the "no sweeping" road featuring the native tree species, the Chinese tallow tree, marks a significant addition to the program, highlighting the focus on local flora [3] - The increased presence of colorful leaf species like the Chinese tallow tree in urban landscaping reflects a shift towards incorporating diverse and visually appealing tree varieties [3]