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001-es BibID:	BIBFORM021531
Első szerző:	Gombosné Nagy Ildikó (környezetgazdálkodási agrármérnök)
Cím:	Field size precision water management based on time series analysis of satellite images / Nagy Ildikó, Burai Péter, Takács Péter, Tamás János
Dátum:	2006
Megjegyzések:	As a result of climatic variability, extreme local meteorological phenomena will more likely significantly affect the agriculture in the near future. Space-based remote sensing provides an opportunity for continuous tracking the biomass growth of plants. A basic input of farm level irrigation models is the crop coefficient (Kc), which was defined by the leaf area and by which the transpirating area can be connect to the phenological changes in time. The widely used FAO CROPWAT irrigation model estimated Kc for a given place with large error by 3 point. In our research, NDVI time series - which were calculated from Landsat TM remote sensed images - were used on the 19 hectare sample plot of sugar beet test plant to determinate Kc values which indicate the phenological state with higher accuracy. Kc values were calibrated by field measurements. Digital Elevation Model (DEM) and water management soil-cartogram of the area were also created and used for calibration. We computed and evaluated heterogeneity by running principal components analysis that was performed on the time-series of the biomass. The results assisted and enabled the precision water management planning of the sample plot, as well as the calculation of different water management scenarios and finally the sustainable water management by timely dynamic data exchange of GIS and CROPWAT input/output.
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok előadáskivonat Remote sensing precision farming water management NDVI
Megjelenés:	Shaping the Future of Geographic Information Science in Europe / ed. Suarez J., Márkus B. - p. 151-160.
További szerzők:	Burai Péter (1977-) (agrármérnök) Takács Péter (agrár) Tamás János (1959-) (környezetgazdálkodási agrármérnök)
Pályázati támogatás:	T47366 OTKA
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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