Modelling Sediment Retention Services and Soil Erosion Changes in Portugal: A Spatio-Temporal Approach

Soils provide important regulating ecosystem services and have crucial implications for human well-being environmental conservation. However, soil degradation particularly erosion jeopardize the maintenance existence of these services. This study explores spatio–temporal relationships to understand distribution patterns sediment retention in mainland Portugal. Based on Corine Land Cover maps from 1990 2018, InVEST Sediment Delivery Ratio (SDR) model was used evaluate influence dynamics water Spatial differences levels were observed within NUTS III boundaries, showing which areas are more vulnerable processes. Results indicated that Region Leiria, Douro coastal regions decreased importantly capacity over years. most territory (77.52%), changes little or not (i.e., less than 5%). The statistical validation proved consistency results, demonstrating SDR is an appropriate tool estimating loss potential by at regional/national levels, although having its limitations. These findings can be relevant support strategies efficient land-use planning regarding mitigation practices stimulate further investigation a national level this service.