al
in
ot
ct
ts
li-
>t-
on
r=
mined. (Table 3.)
Mean positional error in
Ortophotomaps Kdentical metsts
points
TER TRY HUC
Pre-war 23 1,20 1,34 1,32
Post-war 100 1,30 1,76 1,54
Table 3. Mean positional error in meters
3. RESULTS AND DISCUSSION
3.1 Changes in the riverbed and humidity conditions
Investigated area is lowland and in the past river Satava created
meanders. The river was straightened later and agricultural cul-
tivated area increased. Soils in the original river bed and the wa-
terlogged area have different physical and chemical properties.
The present Land Use are limited by different soil properties.
Remote sensing in the near-infrared band shows the historic
riverbed and waterlogged areas (Figure 4.)
| Figure 4. Historic riverbed
3.2 Changes in forest area
The whole area was forested in the ancient past. After the arri-
val of a man began deforestation. The process of afforestation
or deforestation of small areas continues today. They form a
compact forest units and have removed the small forest area.
Deforested areas have different properties. Therefore, we can
see the different areas in the near-infrared band. (Figure 5.)
Figure 5. Deforested area
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
3.3 Sand excavation
Specifics of the area are locations where sand has been excavat-
ed. At first sand removed from the location, where farming had
taken place, and subsequently the remaining pit was filled with
sludge from the nearby sugar refinery in Zidlochovice, with the
land then forested via volunteer seeding. When the area of ara-
ble land was increased in the 1970s, that land came under culti-
vation and was not reclaimed. Although it is used for agricul-
tural purposes today, under adverse moisture conditions
cultivation is not possible. Any other use is therefore practically
impossible. The entire process has taken place without clear
ownership relations. (Figure 6.)
Figure 6. Sand excavation
4. CONCLUSIONS
Aerial photos in the near-infrared band well identify changes
that are caused by different Land Cover earlier. Finding the
origin of these differences in historical materials to determine
the limits of today's recovery and prevent unsuitable Land Use.
This procedure is suitable as a background document for devel-
opment of regional plans and design of the land consolidation.
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