@article{fdi:010081481, title = {{M}onitoring vegetation change in {T}ozeur oases in {S}outhern {T}unisia by using trend analysis of {MODIS} {NDVI} time series (2000-2016)}, author = {{B}en {K}halfallah, {C}. and {D}ela{\^i}tre, {E}ric and {O}uerchefani, {D}. and {D}emagistri, {L}aurent and {D}arragi, {F}. and {S}eyler, {F}r{\'e}d{\'e}rique}, editor = {}, language = {{ENG}}, abstract = {{O}asis ecosystems are highly vulnerable to environmental changes. {T}o determine the state of vegetation in these ecosystems, monitoring systems must be provided with data on cultivated areas. {T}hese data can be obtained in part by using satellite observation systems with high and moderate spatial resolution and high temporal repetitiveness; these systems offer a synoptic vision that makes them a particularly appropriate information source for effectively estimating such data. {I}n this study, we describe an approach to monitor the changing dynamics of {T}ozeur oases in southwestern {T}unisia. {T}o this end, we used a time series decomposition method (seasonal and trend decomposition using loess) to extract the trends from a multi-year time series at the scale of a geographical point (250 m x 250 m pixel) across the {MOD}13{Q}1 time series (2000-2016) of the {M}oderate {R}esolution {I}maging {S}pectroradiometer ({MODIS}) sensor, at a 250-m spatial resolution time series. {T}hese methods were tested with the final aim of setting up an oasis monitoring system based on the analysis of time signatures obtained from {MODIS} images. {T}he results showed that it was possible to identify the main types of irrigated perimeters present in the {D}jerid region and retrospectively trace their recent development history.}, keywords = {{TUNISIE} ; {TOZEUR}}, booktitle = {}, journal = {{C}anadian {J}ournal of {R}emote {S}ensing}, volume = {[{E}arly access]}, numero = {}, pages = {[19 ]}, ISSN = {0703-8992}, year = {2021}, DOI = {10.1080/07038992.2021.1922881}, URL = {https://www.documentation.ird.fr/hor/fdi:010081481}, }