Remote sensing for spatial analysis of irrigated areas
2003
Vincent, Bernard | Pereira, L.S. | Cai, L.G. | Musy, A. | Minhas, P.S. | Ouvrages pour le drainage et l'étanchéité (UR DEAN) ; Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) | INSTITUTE OF AGRONOMY LISBONNE PRT ; Partenaires IRSTEA ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) | China Institute of Water Resources and Hydropower Research (IWHR) | FEDERAL INSTITUTE OF TECHNOLOGY LAUSANNE CHE ; Partenaires IRSTEA ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) | CENTRAL SOIL SALINITY RESEARCH INSTITUTE KARNAL IND ; Partenaires IRSTEA ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)
[Departement_IRSTEA]EEE [TR1_IRSTEA]22 - IRRISAGE / SALIN
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显示更多 [+] 显示较少 [-]英语. The Yellowatsave project has required using remote sensing techniques in order to solve general purpose mapping, modeling and up-scaling difficulties due to the huge size of the case study areas under concern. Remote sensing has been used to provide spatial information for accurate canal mapping, density of canals at the tertiary level, density of villages, delimitation of cropping areas and assessment of induced salinity concerns. Several methodological approaches, various sensors (SPOT, LANDSAT 5, LANDSAT 7 and ERS1) and various image processing methods are applied, compared and evaluated. Extensive use of the Normalised Differential Vegetation Index (NDVI) was made to assess cropping conditions. The assessment of salinity in the Qingtongxia system has shown that about 25% of the area is affected by salinity.
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