<abstract xmlns="http://www.w3.org/1999/xhtml"><p>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.</p></abstract>

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.

Consistency of the presentation of forests on topographic maps

Miscellanea Geographica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"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...

Consistency of the presentation of forests on topographic maps

Published Online: Oct 31, 2020

Page range: 202 - 217

Received: May 11, 2020

Accepted: Jun 19, 2020

DOI: https://doi.org/10.2478/mgrsd-2020-0024

Keywords
Topographic maps, change in forest coverage, forests, Roztocze

© 2020 Paweł Cebrykow, Piotr Petrzak, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Consistency of the presentation of forests on topographic maps

Published Online: Oct 31, 2020

Page range: 202 - 217

Received: May 11, 2020

Accepted: Jun 19, 2020

DOI: https://doi.org/10.2478/mgrsd-2020-0024

KeywordsTopographic maps, change in forest coverage, forests, Roztocze

© 2020 Paweł Cebrykow, Piotr Petrzak, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Topographic maps, change in forest coverage, forests, Roztocze