Changes in woody biomass over centuries to millennia are poorly known, leaving unclear the magnitude of terrestrial carbon fluxes before industrial-era disturbance. Here, we statistically reconstructed changes in woody biomass across the upper Midwestern region of the United States over the past 10,000 years using a Bayesian model calibrated to preindustrial forest biomass estimates and fossil pollen records. After an initial postglacial decline, woody biomass nearly doubled during the past 8000 years, sequestering 1800 teragrams. This steady accumulation of carbon was driven by two separate ecological responses to regionally changing climate: the spread of forested biomes and the population expansion of high-biomass tree species within forests. What took millennia to accumulate took less than two centuries to remove: Industrial-era logging and agriculture have erased this carbon accumulation.

中文翻译：

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由人口和生物群落规模的过程驱动的中西部森林生物量在 8000 年内翻了一番

几个世纪到数千年木本生物量的变化鲜为人知，在工业时代的干扰之前，陆地碳通量的大小尚不清楚。在这里，我们使用根据工业化前森林生物量估计和化石花粉记录校准的贝叶斯模型，统计重建了过去 10,000 年来美国中西部上游地区木质生物量的变化。在冰期后最初的衰退之后，在过去的 8000 年里，木质生物量几乎翻了一番，封存了 1800 太克。这种碳的稳定积累是由对区域气候变化的两种不同的生态反应驱动的：森林生物群落的扩散和森林内高生物量树种的种群扩张。花了几千年积累的东西用了不到两个世纪的时间就消除了：