The objective of the present study is to evaluate the relation between the spatial and temporal dynamics of Land Use and Land Cover (LULC) and the hydro-geomorphological processes and their impacts. The study area is the city of Leiria, in central Portugal, within the period 1958–2018 based on the historical record of floods and landslides disasters. The LULC analysis shows an accentuated increase in the artificial areas and a continuous decrease in the agricultural areas. With regard to hydro-geomorphologic disaster occurrences, a total of 124 occurrences were identified, having caused a set of impacts. The obtained results allow one to characterize the artificialization process, its intensity and territorial dispersion, as a consequence of urban sprawl and peri-urbanization, along with its consequences in exposure to hydro-geomorphological processes. The analysis concludes that changing the risk drivers resulted in an increase in frequency and spatial dispersion of hydro-geomorphologic disasters over the analysed period.

本研究的目的是评估土地利用和土地覆被（LULC）的时空动态与水文地貌过程及其影响之间的关系。根据洪水和滑坡灾害的历史记录，研究区域是1958-2018年间葡萄牙中部的莱里亚市。LULC分析表明，人工地区的增长显着，而农业地区的则持续下降。关于水文-地貌灾害事件，总共确定了124起事件，造成了一系列影响。所获得的结果使人们能够描述由于城市蔓延和城市外围化而导致的人工化过程，强度和领土分布，以及其在暴露于水文地貌过程中的后果。分析得出的结论是，在分析期间，改变风险驱动因素会导致水文地貌灾害发生的频率和空间扩散增加。