@article{fdi:010071985,
  title = {{S}ensitivity of the landslide model {LAPSUS}_{LS} to vegetation and soil parameters},
  author = {{R}ossi, {L}. {M}. {W}. and {R}apidel, {B}. and {R}oupsard, {O}. and {V}illatoro-sanchez, {M}. and {M}ao, {Z}. and {N}espoulous, {J}. and {P}erez, {J}{\'e}r{\^o}me and {P}rieto, {I}. and {R}oumet, {C}. and {M}etselaar, {K}. and {S}choorl, {J}. {M}. and {C}laessens, {L}. and {S}tokes, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he influence of vegetation on slope stability is well understood at the slope level but scaling up to the catchment level is still a challenge, partially because of a lack of suitable data to validate models. {W}e tested the physical landslide model, {LAPSUS}_{LS}, which models slope stability at the catchment scale. {LAPSUS}_{LS} combines a hydrological model with a {L}imit {E}quilibrium {M}ethod model, and calculates the factor of safety of individual cells based on their hydrological and geomorphological characteristics. {W}e tested two types of vegetation on slope stability: (i) coffee monoculture ({C}offea arabica) and (ii) a mixed plantation of coffee and deep rooting {E}rythrina ({E}rythrina poeppigiana) trees. {U}sing soil and root data from {C}osta {R}ica, we performed simulations to test the response of {LAPSUS}_ {LS} to root reinforcement, soil bulk density, transmissivity, internal friction angle and depth of shear plane. {F}urthermore, we modified the model to include biomass surcharge effect in the calculations. {R}esults show that {LAPSUS}_ {LS} was most sensitive to changes in additional cohesion from roots. {W}hen the depth of the shear plane was fixed at 1.0 m, slopes were not unstable. {H}owever, when the shear plane was fixed to 1.5 m, the mixed plantation of coffee and trees stabilized slopes, but the coffee monoculture was highly unstable, because root reinforcement was low at a depth of 1.5 m. {S}oil transmissivity had a limited impact on the results compared to bulk density and internal friction angle. {B}iomass surcharge did not have any significant effect on the simulations. {I}n conclusion, {LAPSUS}_ {LS} responded well to the soil and vegetation input data, and is a suitable candidate for modeling the stability of vegetated slopes at the catchment level.},
  keywords = {{M}odeling ; {C}ohesion ; {R}oots ; {S}oil ; {T}ransmissivity ; {B}ulk density ; {S}lope stability ; {COSTA} {RICA}},
  booktitle = {{S}oil {B}io- and {E}co-{E}ngineering : {T}he {U}se of {V}egetation to {I}mprove {S}lope {S}tability},
  journal = {{E}cological {E}ngineering},
  volume = {109},
  numero = {{P}art {B} - {N}o {S}p{\'e}cial},
  pages = {249--255},
  ISSN = {0925-8574},
  year = {2017},
  DOI = {10.1016/j.ecoleng.2017.08.010},
  URL = {https://www.documentation.ird.fr/hor/fdi:010071985},
}