@article{fdi:010074043, title = {{M}odeling the impact of land use change on basin-scale transfer of fecal indicator bacteria : {SWAT} model performance}, author = {{K}im, {M}. and {B}oithias, {L}aurie and {C}ho, {K}. {H}. and {S}engtaheuanghoung, {O}. and {R}ibolzi, {O}livier}, editor = {}, language = {{ENG}}, abstract = {{L}and use change from annual crops to commercial tree plantations can modify flow and transport processes at the watershed scale, including the fate and transport of fecal indicator bacteria ({FIB}), such as {E}scherichia coli. {T}he {S}oil and {W}ater {A}ssessment {T}ool ({SWAT}) is a useful means for integrating watershed characteristics and simulating water and contaminants. {T}he objective of this study was to provide a comprehensive assessment of the impact of land use change on microbial transfer from soils to streams using the {SWAT} model. {T}his study was conducted for the {H}ouay {P}ano watershed located in northern {L}ao {P}eople's {D}emocratic {R}epublic. {U}nder the observed weather conditions, the {SWAT} model predicted a decrease from 2011 to 2012 and an increase from 2012 to 2013 in surface runoff, suspended solids, and {E}. coli transferred from the soil surface to streams. {T}he amount of precipitation was important in simulating surface runoff, and it subsequently affected the fate and transport of suspended solids and bacteria. {I}n simulations of identical weather conditions and different land uses, {E}. coli fate and transport was more sensitive to the initial number of {E}. coli than to its drivers (i.e., surface runoff and suspended solids), and leaf area index was a significant factor influencing the determination of the initial number of {E}. coli on the soil surface. {O}n the basis of these findings, this study identifies several limitations of the {SWAT} fertilizer and bacteria modules and suggests measures to improve our understanding of the impacts of land use change on {FIB} in tropical watersheds.}, keywords = {{LAOS}}, booktitle = {}, journal = {{J}ournal of {E}nvironmental {Q}uality}, volume = {47}, numero = {5}, pages = {1115--1122}, ISSN = {0047-2425}, year = {2018}, DOI = {10.2134/jeq2017.11.0456}, URL = {https://www.documentation.ird.fr/hor/fdi:010074043}, }