兰州市每年产生3万吨枯枝落叶 你知道飘落的树叶去哪了吗？

Core Viewpoint - Lanzhou generates 30,000 tons of fallen leaves annually, necessitating effective management and disposal strategies to ensure urban cleanliness and safety [7][10]. Group 1: Leaf Collection and Management - The city collaborates between landscaping and sanitation departments to clean up fallen leaves, focusing on safety and aesthetics [8]. - A "mechanical + manual" approach is employed for efficient leaf collection, with large machinery used in low-traffic areas and manual labor for detailed cleaning [8]. - Each year, over 600 tons of branches and leaves are collected in the Xigu District alone [8]. Group 2: Utilization of Green Waste - Fallen leaves and branches are processed into organic fertilizers or sent to waste-to-energy plants for incineration [9][10]. - The Lanzhou Botanical Garden processes over 500 tons of green waste annually, with most sent to incineration facilities [10]. - The city is exploring resource utilization technologies for green waste, including biomass fuel and composting methods [11]. Group 3: Challenges and Solutions - There are limitations in the practical application of green waste resource utilization technologies, indicating a need for further promotion and integration into urban development [11]. - Global practices show that effective green waste management often involves government-led initiatives and strict regulations against burning and landfilling [12]. - Successful examples from other cities, such as Beijing's "zero waste" project, highlight the potential for combining environmental sustainability with cultural initiatives [13].