Core Insights - The value of fallen leaves extends beyond their natural beauty, serving as fertilizers, art pieces, and important ecological indicators [1][8] Group 1: Ecological Significance - Fallen leaves play a crucial role in the forest's material cycle, acting as a "long-lasting slow-release battery" that supports various microorganisms and enhances soil quality [4][6] - The process of leaf decomposition releases essential nutrients like nitrogen, phosphorus, and potassium, which are absorbed by tree roots, thus contributing to the ecosystem's nutrient cycle [4][6] - Research indicates that the timing and color changes of leaves provide valuable data for phenological studies, helping to assess the impact of climate change on ecosystems [6] Group 2: Economic Value - The National Botanical Garden processes approximately 20,000 cubic meters of green waste annually, converting it into about 4,000 cubic meters of high-quality organic matter, which is then used to improve soil fertility [5][6] - This process saves around 1 million yuan in fertilizer procurement and transportation costs, demonstrating a dual enhancement of ecological and economic value [6] Group 3: Cultural and Educational Aspects - Collecting fallen leaves has become a popular activity, allowing individuals to connect with nature and create art, such as bookmarks and collages, thus promoting environmental education [7][8] - The act of picking leaves is seen as a way to respect nature, emphasizing the importance of understanding the ecological roles of fallen leaves in different environments [7][8]