@article{fdi:010068408, title = {{V}egetation activity in the upper {O}ueme basin ({B}enin, {A}frica) studied from {SPOT}-{VGT} (2002-2012) according to land cover}, author = {{T}hao {D}o and {B}igot, {S}. and {G}alle, {S}ylvie}, editor = {}, language = {{ENG}}, abstract = {{S}igns of climate change in {W}est {A}frica over the last few decades are among the significant observed in the tropics, in particular the decrease in mean annual precipitation. {A}lthough such change has brought about new eco-climatic constraints on vegetation forms, it has not proven easy to determine interannual and intra-seasonal variations on a regional scale for major vegetation forms, whether natural or highly artificial as a result of human activities. {T}he present study analyzes vegetation activity via a {N}ormalized {D}ifference {V}egetation {I}ndex ({NDVI}) defined from ten-day {SPOT}-{VGT} data (one-km resolution, covering the period from 2002 to 2012) in the {A}frican {M}onsoon {M}ultidisciplinary {A}nalysis ({AMMA}) {P}rogram observation zone, located in the {U}pper {O}ueme {R}iver {B}asin in {B}enin. {T}he statistical analysis is mainly based on a multifactor approach allowing approximately 54% of interannual {NDVI} variations to be accounted for. {R}esults show that spatio-temporal {NDVI} variability in the {R}iver {B}asin is highly dependent on land use, be it forest, wooded savanna, farmland or areas undergoing conversion.}, keywords = {{COUVERT} {VEGETAL} ; {EVOLUTION} ; {DONNEES} {SATELLITE} ; {SATELLITE} {SPOT} ; {ANALYSE} {STATISTIQUE} ; {ANALYSE} {EN} {COMPOSANTES} {PRINCIPALES} ; {VARIATION} {SAISONNIERE} ; {VARIATION} {INTERANNUELLE} ; {FORET} {CLAIRE} ; {SAVANE} ; {SOL} {CULTIVE} ; 2002 2012 ; {BENIN}}, booktitle = {}, journal = {{I}nternational {J}ournal of {R}emote {S}ensing {A}pplications}, volume = {4}, numero = {3}, pages = {121--133}, ISSN = {2226-4361}, year = {2014}, DOI = {10.14355/ijrsa.2014.0403.02}, URL = {https://www.documentation.ird.fr/hor/fdi:010068408}, }