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<p>Sediment transfer underpins nutrient cycling, ecosystem integrity, landscape formation, climate reconstruction, and resource management. Since the Last Glacial Maximum (LGM, ~23,000–19,000 BP), Earth’s climate has gradually warmed, causing ice sheet recession, rising sea levels, and significant global ecosystem changes. However, the impacts of long-term climate change and human activities on sediment transfer since the LGM remain poorly understood. Here, we present a high-resolution reconstruction of sediment accumulation rates (SARs) across China since the LGM based on the new Chinese Lake and Peatland Sediment Record (CLASER) database. We find that 54% records exhibit increasing SARs over time. Three distinct phases driven by human activities and climate are identified: stable (20,000–8822 BC), fluctuant (8822 BC–1609 AD), and increasing (1609–1998 AD), characterized by 100–300-year cycles. The growing SARs correlate positively with land-use intensity and precipitation, and negatively with temperature. Regional patterns indicate that human activities and plant productivity mainly controlled sediment accumulation in the Eastern Plain and Yunnan-Guizhou Plateau, while precipitation exerted a more substantial influence in lowland plains, and temperature played a greater role in plateau regions. Our quantified study highlights the long-term combined and regional-specific roles of climate and anthropogenic forcing in shaping sediment transfer across China since the LGM.</p>

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Anthropogenic and climatic controls on sediment transfer across China since the Last Glacial Maximum

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月20日

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  • Minqiao Li,
  • Huasheng Huang,
  • Kenji Izumi,
  • Wei Tan,
  • Fan Zhang,
  • Xia Meng,
  • Guoping Tang

摘要

Sediment transfer underpins nutrient cycling, ecosystem integrity, landscape formation, climate reconstruction, and resource management. Since the Last Glacial Maximum (LGM, ~23,000–19,000 BP), Earth’s climate has gradually warmed, causing ice sheet recession, rising sea levels, and significant global ecosystem changes. However, the impacts of long-term climate change and human activities on sediment transfer since the LGM remain poorly understood. Here, we present a high-resolution reconstruction of sediment accumulation rates (SARs) across China since the LGM based on the new Chinese Lake and Peatland Sediment Record (CLASER) database. We find that 54% records exhibit increasing SARs over time. Three distinct phases driven by human activities and climate are identified: stable (20,000–8822 BC), fluctuant (8822 BC–1609 AD), and increasing (1609–1998 AD), characterized by 100–300-year cycles. The growing SARs correlate positively with land-use intensity and precipitation, and negatively with temperature. Regional patterns indicate that human activities and plant productivity mainly controlled sediment accumulation in the Eastern Plain and Yunnan-Guizhou Plateau, while precipitation exerted a more substantial influence in lowland plains, and temperature played a greater role in plateau regions. Our quantified study highlights the long-term combined and regional-specific roles of climate and anthropogenic forcing in shaping sediment transfer across China since the LGM.