Abstract The exceptional preservation of the cityscape in the medieval city of Bruges (Belgium) triggered dendrochronological research on numerous preserved roof constructions in historical buildings, that date from the Middle Ages up to the early modern period. As many of these oak timbers lack the preservation of waney edge, a method was developed to combine sapwood estimates of felling dates within each building phase and to compute a summed probability distribution (SPD) for those felling dates. These summed probabilities now allow us to reconstruct temporal trends in building trade activity in an expanding medieval city. When linked to the social status of the patrons of the building projects, it is observed that resilience to demographic crisis and political turmoil differs among the social groups and political elite of a medieval society. Furthermore the dating results of decades of tree-ring research now provide a typo-chronological framework of roof constructions and shows that it took nearly two centuries before more advanced technological skill in the construction of roofs completely replaced the traditional common rafter roofs.

中文翻译：

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中世纪城市建筑贸易的起起落落：树木年轮数据作为布鲁日经济、社会和人口动态的代理（约 1200-1500 年）

摘要 中世纪城市布鲁日（比利时）对城市景观的特殊保护引发了对历史建筑中众多保存完好的屋顶结构的树木年代学研究，这些建筑的历史可以追溯到中世纪到现代早期。由于这些橡木木材中的许多缺乏对边缘的保护，因此开发了一种方法来结合每个建筑阶段的边材估计砍伐日期，并计算这些砍伐日期的总概率分布 (SPD)。这些汇总的概率现在使我们能够重建在一个不断扩大的中世纪城市中建立贸易活动的时间趋势。当与建筑项目赞助人的社会地位联系起来时，可以观察到中世纪社会的社会群体和政治精英对人口危机和政治动荡的适应能力不同。