"[48AB03A8445B]" . "402296" . . "One of the possibilities offered to us by the remote sensing, is to monitor all the vegetation. Therefore agricultural plants can be monitor as well. From the spectral point of view, the presence of vegetation induces a significant increase of reflectance in IR part of the spectra. The main topic of this research project was to evaluate the changes in reflectance in chosen agriculturally used land in time. A field (61 ha) which belongs to University agriculture enterprise in \u017Dab\u010Dice was chosen as an experimental area for our project. Aerial photography was done by mid-format camera Hasselbland H1 in two spectral bands (RED, 630-690 nm a NIR, 750-900 nm) and in the following time periods: June 2004 (twice), July 2005 and May 2006. Based on these data, we were able to create an orthophotomap (pixel size = 10 x 10 m), determine NDVI and calculate a correlation between the reflectance of both spectral bands within the period of monitoring. In the case of winter wheat, a high dependence (correlation fact"@en . . "Jednou z mo\u017Enost\u00ED, kter\u00E9 poskytuje d\u00E1lkov\u00FD pr\u016Fzkum Zem\u011B (DPZ), je sledov\u00E1n\u00ED vegetace, do kter\u00E9 pat\u0159\u00ED i zem\u011Bd\u011Blsk\u00E9 rostliny. Pou\u017Eit\u00ED DPZ v zem\u011Bd\u011Blstv\u00ED je l\u00E1kav\u00E9, ale p\u0159in\u00E1\u0161\u00ED \u0159adu probl\u00E9m\u016F. Ji\u017E od po\u010D\u00E1tku sledov\u00E1n\u00ED zem\u011Bd\u011Blsk\u00FDch plodin prost\u0159edky DPZ byla snaha vytvo\u0159it katalog, charakterizuj\u00EDc\u00ED jednotliv\u00E9 plodiny v ur\u010Dit\u00E9 fenof\u00E1zi. Vzhledem k mno\u017Estv\u00ED vliv\u016F ovliv\u0148uj\u00EDc\u00EDch odrazov\u00E9 vlastnosti rostlin, je t\u00E9m\u011B\u0159 nemo\u017En\u00E9 stanovit jejich hodnoty obecn\u011B platn\u00E9. Pro \u0159e\u0161en\u00ED projektu byl zvolen pozemek \u0160ZP \u017Dab\u010Dice (Czech Republic, 48\u00B059'11.N 16\u00B037'40. E, 175 m n.m.), kter\u00FD hospoda\u0159\u00ED v kuku\u0159i\u010Dn\u00E9 v\u00FDrobn\u00ED oblasti. Velikost sledovan\u00E9ho pozemku byla 50 ha. Na z\u00E1klad\u011B zku\u0161enost\u00ED a z d\u016Fvodu srovnatelnosti v\u00FDsledk\u016F s jin\u00FDmi v\u00FDzkumy bylo provedeno v letech 2004 -- 2006 sn\u00EDmkov\u00E1n\u00ED ve dvou spektr\u00E1ln\u00EDch p\u00E1smech (RED, 630-690 nm a NIR, 750-900 nm) a ve dvou term\u00EDnech -- konec kv\u011Btna a\u017E za\u010D\u00E1tek \u010Dervna a konec \u010Dervna a\u017E za\u010D\u00E1tek \u010Dervence. Sn\u00EDmkov\u00E1n\u00ED provedla firma Geodis letadlem Z-37A \u010Cmel\u00E1k, kter\u00FD je vybaven digit\u00E1ln\u00ED kamero"@cs . "Variability of NDVI agricultural used areas" . "Land Cover; Land Use; Remote sensing; History; Agriculture"@en . "Variability of NDVI agricultural used areas" . "Prom\u011Bnlivost NDVI zem\u011Bd\u011Blsky vyu\u017E\u00EDvan\u00FDch ploch"@cs . . "Prom\u011Bnlivost NDVI zem\u011Bd\u011Blsky vyu\u017E\u00EDvan\u00FDch ploch"@cs . "4"^^ . "3"^^ . "International Society for Photogrammetry and Remote Sensing" . . . "RIV/62156489:43210/08:00129088!RIV09-MSM-43210___" . "RIV/62156489:43210/08:00129088" . "V" . . "The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences" . . . . "2"^^ . "One of the possibilities offered to us by the remote sensing, is to monitor all the vegetation. Therefore agricultural plants can be monitor as well. From the spectral point of view, the presence of vegetation induces a significant increase of reflectance in IR part of the spectra. The main topic of this research project was to evaluate the changes in reflectance in chosen agriculturally used land in time. A field (61 ha) which belongs to University agriculture enterprise in \u017Dab\u010Dice was chosen as an experimental area for our project. Aerial photography was done by mid-format camera Hasselbland H1 in two spectral bands (RED, 630-690 nm a NIR, 750-900 nm) and in the following time periods: June 2004 (twice), July 2005 and May 2006. Based on these data, we were able to create an orthophotomap (pixel size = 10 x 10 m), determine NDVI and calculate a correlation between the reflectance of both spectral bands within the period of monitoring. In the case of winter wheat, a high dependence (correlation fact" . "\u0160af\u00E1\u0159, V\u00E1clav" . "Posp\u00ED\u0161il, Ji\u0159\u00ED" . . "1682-1750" . . "\u017Dd\u00EDmal, V\u00E1clav" . . "Beijing" . "Variability of NDVI agricultural used areas"@en . . . . "Variability of NDVI agricultural used areas"@en . "43210" . . .