@article{fdi:010091257,
  title = {{S}harp decline in surface water resources for agriculture and fisheries in the {L}ower {M}ekong {B}asin over 2000-2020},
  author = {{N}ormandin, {C}. and {F}rappart, {F}. and {B}ourrel, {L}uc and {B}larel, {F}. and {B}iancamaria, {S}. and {W}igneron, {J}. {P}. and {G}alenon, {L}. and {B}ernard, {E}. and {C}oulon, {L}. and {L}ubac, {B}. and {M}arieu, {V}. and {V}antrepotte, {V}incent and {P}ham-{D}uc, {B}. and {D}o, {H}. {T}. and {P}rigent, {C}. and {A}ires, {F}. and {Y}amazaki, {D}. and {C}iais, {P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}ater resources play a crucial role in the global water cycle and are affected by human activities and climate change. {H}owever, the impacts of hydropower infrastructures on the surface water extent and volume cycle are not well known. {W}e used a multi-satellite approach to quantify the surface water storage variations over the 2000-2020 period and relate these variations to climate-induced and anthropogenic factors over the whole basin. {O}ur results highlight that dam operations have strongly modified the water regime of the {M}ekong {R}iver, exhibiting a 55 % decrease in the seasonal cycle amplitude of inundation extent (from 3178 km2 2 to 1414 km2) 2 ) and a 70% decrease in surface water volume (from 1109 km3 3 to 327 km3) 3 ) over 2000-2020. {I}n the floodplains of the {L}ower {M}ekong {B}asin, where rice is cultivated, there has been a decline in water residence time by 30 to 50 days. {T}he recent commissioning of big dams (2010 and 2014) has allowed us to choose 2015 as a turning point year. {R}esults show a trend inversion in rice production, from a rise of 40 % between 2000 and 2014 to a decline of 10 % between 2015 and 2020, and a strong reduction in aquaculture growth, from +730 % between 2000 and 2014, to +53 % between 2015 and 2020. {A}ll these results show the negative impact of dams on the {M}ekong basin, causing a 70 % decline in surface water volumes, with major repercussions for agriculture and fisheries over the period 2000-2020. {T}herefore, new future projects such as the {F}unan {T}echo canal in {C}ambodia, scheduled to start construction at the end of 2024, will particularly affect 1300 km2 2 of floodplains in the lower {M}ekong basin, with a reduction in the amount of water received, and other areas will be subjected to flooding. {T}he human, material and economic damage could be catastrophic.},
  keywords = {{R}emote sensing ; {H}ydrology ; {S}urface water volume ; {D}am operation ; {F}lood ; {CHINE} ; {CAMBODGE} ; {LAOS} ; {VIET} {NAM} ; {THAILANDE} ; {MEKONG} {BASSIN}},
  booktitle = {},
  journal = {{S}cience of the {T}otal {E}nvironment},
  volume = {950},
  numero = {},
  pages = {175259 [16 p.]},
  ISSN = {0048-9697},
  year = {2024},
  DOI = {10.1016/j.scitotenv.2024.175259},
  URL = {https://www.documentation.ird.fr/hor/fdi:010091257},
}