@article{fdi:010064120, title = {{U}se of field and laboratory methods for estimating unsaturated hydraulic properties under different land uses}, author = {{S}iltecho, {S}. and {H}ammecker, {C}laude and {S}riboonlue, {V}. and {C}lermont {D}auphin, {C}athy and {T}relo-{G}es, {V}. and {A}ntonino, {A}. {C}. {D}. and {A}ngulo-{J}aramillo, {R}.}, editor = {}, language = {{ENG}}, abstract = {{A}dequate water management is required to improve the efficiency and sustainability of agricultural systems when water is scarce or over-abundant, especially in the case of land use changes. {I}n order to quantify, to predict and eventually to control water and solute transport into soil, soil hydraulic properties need to be determined precisely. {A}s their determination is often tedious, expensive and time-consuming, many alternative field and laboratory techniques are now available. {T}he aim of this study was to determine unsaturated soil hydraulic properties under different land uses and to compare the results obtained with different measurement methods ({B}eerkan, disc infiltrometer, evaporation, pedotransfer function). {T}he study has been realized on a tropical sandy soil in a mini-watershed in northeastern {T}hailand. {T}he experimental plots were positioned in a rubber tree plantation in different positions along a slope, in ruzi grass pasture and in an original forest site. {N}on-parametric statistics demonstrated that van {G}enuchten unsaturated soil parameters ({K}-s, alpha and n) were significantly different according to the measurement methods employed, whereas the land use was not a significant discriminating factor when all methods were considered together. {H}owever, within each method, parameters n and alpha were statistically different according to the sites. {T}hese parameters were used with {H}ydrus1{D} for a 1-year simulation and computed pressure head did not show noticeable differences for the various sets of parameters, highlighting the fact that for modeling, any of these measurement methods could be employed. {T}he choice of the measurement method would therefore be motivated by the simplicity, robustness and its low cost.}, keywords = {{THAILANDE}}, booktitle = {}, journal = {{H}ydrology and {E}arth {S}ystem {S}ciences}, volume = {19}, numero = {3}, pages = {1193--1207}, ISSN = {1027-5606}, year = {2015}, DOI = {10.5194/hess-19-1193-2015}, URL = {https://www.documentation.ird.fr/hor/fdi:010064120}, }