the determination of the amount of nitrogen in rice and Reyniers
et al. (2006) observed dependence between the amount of nitro-
gen and NDVI in plants. Additionally, studies that evaluate
convenience of various spectral bands in different plant growth
phases or conditions are also made. Ferwerda, Skidmore a Mu-
tanga (2005) observed that the most convenient spectral region
for the monitoring of the nitrogen amount lies between 1770
and 693 nm. Historical land cover is important for landscape
planning (Marcucci, 2000) and remote sensing is a suitable tool
for recognition of historical land cover. (Ulbricht, Heckendorf,
1998, Gojda, 2000)
FAN
1953 2010
0 250 Meters
1878 2010
0 500 1 000 Meters
Figure 2. Straightened river Satava
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B7, 2012
XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia
2. METHODS
2.1 Study site
The project was solved on the land of University agriculture en-
terprise (UAE) (Mendel University in Brno), placed in Zabgice
90 km from Vienna (Czech Republic, 48?59'11" N 16?37'40"
E, 175 m above sea-level). (Figure 3.) UAE is working mainly
in the maize area. Field production is focused on the production
of cereals and fodder crops and livestock production is focused
on beef and pig-rising. Additional activities are focused first of
all on the practical aspects of the student education. UAE
Zabtice controls 1602 ha of the farmland (1353 ha of the arable
land).
In the area of interest from 1953 to 2003, there were significant
changes between different categories of the Land Use. Area of
the arable land decreased from 83% to 73%, area of permanent
grassland decreased from 7% to 2% and area of the forest land
increased from 3% to 5%. The categories of orchards and gar-
dens area occurred increasing by 7% and other categories by
6%. The increase in the category of the others was mainly due
to increase in built-up area.
Zabeice
*
© VENNA
2.2 Data processing
Modern digital aerial measuring cameras also capture by one
channel the radiation from near-infrared band. These aerial pho-
tos are an important information base for the study of vegetation
cover. Currently, the entire Czech Republic is already covered
by digital infrared images. With a resolution of 12.5 cm 2/3 of
the Czech Republic is now covered. One third is covered by im-
agery with a resolution of 25 cm (values are given for the result-
ing pansharpening images composed of band G, R and NIR into
the standard CIR — the separate resolution of infrared band is
37.5 or 75 cm). The mission with digital cameras UltraCam
from company Vexcel Imaging GmbH was started in 2007 and
this year 2012 whole country to the final element of 12.5 cm
will be covered. All images are archived. Images can be used
for studying purposes, either as individual bands or as a compo-
site image of the three color bands without pansharpening - G,
R and NIR as well as the CIR and pansharpened CIR. For stud-
ying purposes the images can be used without radiometric cor-
rections, ortogonalized or composed in the final orthophotomap.
Orthophotomap with the use of IR band is made according to
requirements and needs only to order. Coverage of the Czech
Republic orthophotomap with element 12.5 cm, or 10 cm (large
cities) is made only in the standard RGB interpretation.
Aerial photos in the near-infrared band were used for visual in-
