Consistency of the presentation of forests on topographic maps

This article analyses the accuracy of the presentation of forests on Polish topographic maps. Four test polygons were selected, differing in forest coverage and spatial distribution of forest areas in order to improve the objectivity of the study. All the polygons were located in Roztocze. Four maps...

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Main Authors: Cebrykow Paweł, Petrzak Piotr
Format: Article
Language:English
Published: Sciendo 2020-10-01
Series:Miscellanea Geographica: Regional Studies on Development
Subjects:
Online Access:https://doi.org/10.2478/mgrsd-2020-0024
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author Cebrykow Paweł
Petrzak Piotr
author_facet Cebrykow Paweł
Petrzak Piotr
author_sort Cebrykow Paweł
collection DOAJ
description This article analyses the accuracy of the presentation of forests on Polish topographic maps. Four test polygons were selected, differing in forest coverage and spatial distribution of forest areas in order to improve the objectivity of the study. All the polygons were located in Roztocze. Four maps were tested: System 1965 (1:50 000), GUGIK80 (1:100 000), PUWG92 (1:10 000), and VMap L2 (1:50 000). The forest areas from the maps and aerial photographs were vectorised; then the photographs were converted into an orthophotomap that constituted the reference material. All materials were coherent in terms of content validity. After vectorising the range of the forests, sampling was conducted within the hexagonal fields. A comparison of the obtained values provided the basis for maps that presented the errors. The analysis permitted several conclusions to be drawn, generally stating that the credibility of maps within the scope of presenting forest areas depends on the scale and purpose of the map, and that any analyses based on these maps should assume that the results should have higher tolerance levels.
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spelling doaj.art-3b46eee916d84d4caf0a7fd3b372221f2022-12-21T21:35:36ZengSciendoMiscellanea Geographica: Regional Studies on Development2084-61182020-10-0124420221710.2478/mgrsd-2020-0024mgrsd-2020-0024Consistency of the presentation of forests on topographic mapsCebrykow Paweł0Petrzak Piotr1Faculty of Earth Sciences and Spatial Management, Maria Sklodowska University, Lublin, PolandFaculty of Earth Sciences and Spatial Management, Maria Sklodowska University, Lublin, PolandThis article analyses the accuracy of the presentation of forests on Polish topographic maps. Four test polygons were selected, differing in forest coverage and spatial distribution of forest areas in order to improve the objectivity of the study. All the polygons were located in Roztocze. Four maps were tested: System 1965 (1:50 000), GUGIK80 (1:100 000), PUWG92 (1:10 000), and VMap L2 (1:50 000). The forest areas from the maps and aerial photographs were vectorised; then the photographs were converted into an orthophotomap that constituted the reference material. All materials were coherent in terms of content validity. After vectorising the range of the forests, sampling was conducted within the hexagonal fields. A comparison of the obtained values provided the basis for maps that presented the errors. The analysis permitted several conclusions to be drawn, generally stating that the credibility of maps within the scope of presenting forest areas depends on the scale and purpose of the map, and that any analyses based on these maps should assume that the results should have higher tolerance levels.https://doi.org/10.2478/mgrsd-2020-0024topographic mapschange in forest coverageforestsroztocze
spellingShingle Cebrykow Paweł
Petrzak Piotr
Consistency of the presentation of forests on topographic maps
Miscellanea Geographica: Regional Studies on Development
topographic maps
change in forest coverage
forests
roztocze
title Consistency of the presentation of forests on topographic maps
title_full Consistency of the presentation of forests on topographic maps
title_fullStr Consistency of the presentation of forests on topographic maps
title_full_unstemmed Consistency of the presentation of forests on topographic maps
title_short Consistency of the presentation of forests on topographic maps
title_sort consistency of the presentation of forests on topographic maps
topic topographic maps
change in forest coverage
forests
roztocze
url https://doi.org/10.2478/mgrsd-2020-0024
work_keys_str_mv AT cebrykowpaweł consistencyofthepresentationofforestsontopographicmaps
AT petrzakpiotr consistencyofthepresentationofforestsontopographicmaps