@article{PAR00002490,
  title = {{T}rapping efficiencies of cultivated and natural riparian vegetation of northern {L}aos},
  author = {{V}igiak, {O}. and {R}ibolzi, {O}livier and {P}ierret, {A}lain and {S}engtaheuanghoung, {O}. and {V}alentin, {C}hristian},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n northern {L}aos, intensification of cultivation on sloping land leads to accelerated erosion processes. {M}anagement of riparian land may counteract the negative impacts of higher sediment delivery rates on water quality. {T}his study assessed water and sediment concentration trapping efficiencies of riparian vegetation in northern {L}aos and the effect of cultivation of riparian land on water quality. {R}unoff flowing in and out of selected riparian sites was monitored by means of open troughs. {I}n 2005, two native grass, two bamboo, and two banana sites were monitored. {I}n 2006, adjacent to steep banana, bamboo, and native grass sites, three upland rice sites were established and monitored. {W}ater trapping efficiency ({WTE}) and sediment concentration trapping efficiency ({SCTE}) were calculated on an event basis; means and 95% confidence intervals ({CI}s) were estimated with a bootstrapping approach. {C}onfidence intervals were large and overlapping among sites. {S}eepage conditions severely limited trapping efficiency. {N}ative grass resulted in the highest {WTE} (95% {CI}, -0.10 to 0.23), which was not significantly different from zero. {B}anana resulted in the highest {SCTE} (95% {CI}, 0.06-0.40). {B}amboo had negative {WTE} and {SCTE}. {M}edian outflow runoff from rice sites was nine times the inflow. {M}edian outflow sediment concentration from rice sites was two to five times that of their adjacent sites and two to five times the inflow sediment concentration. {A}lthough low-tillage banana plantation may reduce sediment concentration of runoff, cultivation of annual crops in riparian land leads to delivery of turbid runoff into the stream, thus severely affecting stream water quality.},
  keywords = {},
  booktitle = {},
  journal = {{J}ournal of {E}nvironmental {Q}uality},
  volume = {37},
  numero = {3},
  pages = {889--897},
  ISSN = {1537-2537},
  year = {2008},
  DOI = {10.2134/jeq2007.0251},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00002490},
}