Pollen and NPP analysis performed on the sedimentary deposits accumulated in the inter-tidal banks of the Tagus Estuary allow for the reconstruction of vegetation history and landscape changes that occurred in Lisbon from the 1st to the 6th century cal AD. The high chronological resolution of this investigation makes it possible to identify changes in human activities that took place during the Roman period and reveals the extent of land use in the 2nd century cal AD. However, the most considerable landscape transformation of this 600-year period dates back to the late 5th century cal AD, when significant deforestation and increasing human activity, particularly pasturing, spread throughout the territory. This feature bears witness to the outcome of a deep socioeconomic transformation following the disintegration of the Roman administration and sheds light on a poorly known period in this part of Iberia.

中文翻译：

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罗马时代和中世纪早期里斯本市的景观变化和植被历史

对塔霍河口潮间带沉积物沉积物进行的花粉和 NPP 分析可以重建公元 1 世纪至 6 世纪里斯本发生的植被历史和景观变化。这项调查按时间顺序排列的分辨率高，可以识别罗马时期发生的人类活动的变化，并揭示公元 2 世纪土地利用的范围。然而，这 600 年期间最显着的景观转变可以追溯到公元 5 世纪后期，当时大量的森林砍伐和人类活动的增加，特别是放牧，遍布整个领土。