2026-04-14T02:59:00Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/3362912026-01-30T09:10:20Zcom_2072_1033col_2072_452950

00925njm 22002777a 4500 dc Oorthuis Gómez, Raül author Vaunat, Jean author Hurlimann Ziegler, Marcel author Lloret Morancho, Antonio author Moya Sánchez, José author Puig i Polo, Càrol author Fraccica, Alessandro author 2021-01 The stability and erosion of natural and man-made slopes is influenced by soil-vegetation-atmosphere interactions and the thermo-hydro-mechanical slope conditions. Understanding such interactions at the source of slope mass-wasting is important to develop land-use planning strategy and to promote environmentally adapted mitigation strategies, such as the use of vegetation to stabilize slopes and control erosion. Monitoring is essential for calibrating and validating models and for better comprehending the physical mechanisms of soil-vegetation-atmosphere interactions. We approached this complex problem by means of an experimental work in a full-scale monitored embankment, which is divided into four instrumented partitions. These partitions are North or South-faced and present a bare and vegetation cover at each orientation. Our main findings show that vegetation enhances rainfall infiltration and decreases runoff, which reduces slope stability and surficial erosion, while plant transpiration induces higher suctions and hence slope stability. Concerning thermal aspects, vegetation reduces the incidence of net solar radiation and consequently heat flux. Thus, daily temperature fluctuations and evaporation decreases. However, the effect of vegetation in the development of dryer soil conditions is more significant than the orientation effect, presenting higher drying rates and states at the North-vegetated slope compared to the South-bare slope. This research was funded by the national researchs projects called “Slope mass-wasting under climate change (SMuCPhy, project reference number BIA 2015-67500-R)” and “Multiscale analysis of soil erosion in steep slopes (EROSLOP, project reference number PID2019-104266RB-I00) granted by the Ministry of Economy and Competitiveness of Spain and co-funded by AEI/FEDER, UE. Peer Reviewed Postprint (published version) Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls Slopes (Soil mechanics)--Stability Embankment Rainfall Infiltration Temperature Vegetation cover Monitoring Talussos (Mecànica dels sòls) -- Tractament Slope orientation and vegetation effects on soil thermo-hydraulic behavior: an experimental study