ABSTRACT

This work presents the geomorphological features associated with the anthropic morphogenesis of the Bisagno Stream catchment, combined with the geo-hydrological hazards associated with landslides and floods. This catchment is internationally known for its recurring high-magnitude floods and its geo-hydrological hazards associated with the large and widespread presence of elements exposed at risks. It experienced severe morphological changes due to anthropogenic interventions related to urban sprawl and agriculture. Anthropogenic modifications to the former landscape have been particularly widespread and pervasive over the coastline, the floodplain, and the slopes. They include a general alteration of the pristine landforms, excavation and landfill forms, channelization and culvert of riverbeds, and terraced slopes. The 1:20,000 scale map allows to assess the relationships existing among structures and infrastructures, anthropogenic landforms, and landslides and flood-prone areas. Thus, this tool provides relevant information for land-use planning and land management, in particular under the perspective of geo-hydrological hazards mitigation.

摘要

这项工作提出了与比萨格诺河流域人类形态发生有关的地貌特征，以及与滑坡和洪水有关的地质水文危险。该流域因其反复发生的高强度洪水和与大量和广泛存在的处于危险之中的元素有关的地理水文灾害而闻名。由于与城市扩张和农业有关的人为干预，它经历了严重的形态变化。在海岸线，洪泛区和山坡上，对前地貌的人为改造特别普遍和普遍。它们包括原始地形，开挖和填埋场形式，河床的渠道化和涵洞以及梯田斜坡的总体变化。1:20 000比例尺地图可以评估结构和基础设施，人为地貌以及滑坡和易发生洪水地区之间的关系。因此，该工具为土地利用规划和土地管理提供了相关信息，尤其是在减轻地球水文危害的角度。