@article{fdi:010062733,
  title = {{A}ctual evapotranspiration and canopy resistance measurement of the savannah in the {K}ouilou basin ({C}ongo-{B}razzaville)},
  author = {{N}izinski, {G}eorges and {G}alat, {G}{\'e}rard and {G}alat-{L}uong, {A}nh},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he aim of this work is to study the actual evapotranspiration and surface resistance of the savannah using the {B}owen-ratio method for two contrasted periods, dry and rainy season. {T}he reliability of this method has been assessed by comparison with the {M}onteith equation and the soil-water balance method in a 90% {L}oudetia arundinacea dominated savannah ({P}ointe {N}oire, {C}ongo). {O}ur results relate to the period from 18 {S}eptember to 11 {O}ctober 1998 (24 days): (a) from 18 to 29 {S}eptember (“dry season”), the soil-water content was less than 70% of the soil-water content at field capacity (63–70% of {RFC}; large soil-water stress; {T}/{EP} from 0.2 to 0.4); (b) from 30 {S}eptember to 11 {O}ctober (“rainy season”) soil-water content close to 90–92% of {RFC}; no soil-water stress; {T}/{EP} from 0.73 to 0.77). {T}he mean daily surface resistance reulting from the {B}owen-ratio method was 317 s m–1, 355 s m–1 during the “dry season” and 279 s m–1 during the “rainy season”. {T}he total actual evapotranspiration ({E}a) resulting from the {B}owen-ratio method, {P}enman-{M}onteith equation and soil-water balance method were, respectively of 58.6–57.8 and 56.2 mm, with the mean daily {E}a of 2.4–2.4 and 2.3 mm day–1 (2.4–1.5 and 2.2 mm day–1 in “dry season” and of 2.5–3.4 and 2.5 mm day–1 in “rainy season”). {T}he {B}owen-ratio method was used for the assessment of the actual evapotranspiration from the temperature and specific humidity differences, net radiation and the soil heat flux measurement: its advantages are a rapidity of installation, a temporal resolution of measurement in less than one hour and a good integration of the heterogeneousness of the savannah’s latent flux of vaporization. {T}his method is adapted to ecophysiological studies in tropical conditions with reduced teams.},
  keywords = {{BIOCLIMATOLOGIE} ; {SAVANE} ; {EVAPOTRANSPIRATION} ; {CANOPEE} ; {SAISON} {HUMIDE} ; {SAISON} {SECHE} ; {EAU} {DU} {SOL} ; {BILAN} {HYDRIQUE} ; {HUMIDITE} {DE} {L}'{AIR} ; {TEMPERATURE} ; {METHODE} {D}'{ANALYSE} ; {MODELISATION} ; {MODELE} {MATHEMATIQUE} ; {ETUDE} {COMPARATIVE} ; {RADIATION} ; {CONGO} ; {POINTE} {NOIRE}},
  booktitle = {},
  journal = {{R}ussian {J}ournal of {E}cology},
  volume = {45},
  numero = {5},
  pages = {359--366},
  ISSN = {1067-4136},
  year = {2014},
  DOI = {10.1134/{S}1067413614050191},
  URL = {https://www.documentation.ird.fr/hor/fdi:010062733},
}