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]

Core Insights - The value of fallen leaves extends beyond their natural beauty, representing a deep connection with nature and ecological wisdom [1][6] Group 1: Ecological Significance - Fallen leaves play a crucial role in the material cycle of forests, acting as a "long-lasting slow-release battery" that supports various organisms and contributes to nutrient cycling [3] - The decomposition of fallen leaves releases essential nutrients like nitrogen, phosphorus, and potassium, which are absorbed by tree roots, enhancing soil structure and promoting carbon storage [3] - The seasonal changes in leaf color and drop provide valuable data for phenological research, aiding in the understanding of climate change impacts on ecosystems [5] Group 2: Economic and Practical Applications - The National Botanical Garden has implemented a system to convert green waste, including fallen leaves, into high-quality organic matter, saving approximately 1 million yuan annually in fertilizer costs [4] - The processing of fallen leaves into organic resources not only promotes ecological sustainability but also enhances economic value through cost savings and resource efficiency [4] Group 3: Educational and Cultural Aspects - Collecting fallen leaves has become a popular activity that fosters a deeper appreciation for nature, leading to creative uses such as bookmarks and art [5] - Fallen leaves serve as excellent educational materials, allowing individuals to engage with the concepts of life cycles and ecological systems in a tangible way [5][6] - The act of collecting leaves should be done respectfully, particularly in protected ecological areas, to maintain the integrity of the ecosystem [6]