文章基本信息

标题：Assessment of Changes in a Viewshed in the Western Carpathians Landscape as a Result of Reforestation
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作者：Michał Sobala ; Urszula Myga-Piątek ; Bartłomiej Szypuła 等
期刊名称：Land
印刷版ISSN：2073-445X
出版年度：2020
卷号：9
期号：430
页码：430
DOI：10.3390/land9110430
语种：English
出版社：MDPI, Open Access Journal
摘要：A viewshed analysis is of great importance in mountainous areas characterized by high landscape values. The aim of this research was to determine the impact of reforestation occurring on former pasturelands on changes in the viewshed, and to quantify changes in the surface of glades. We combine a horizontal and a vertical approach to landscape analysis. The changes in non-forest areas and the viewshed from viewpoints located in glades were calculated using historical cartographic materials and a more recent Digital Elevation Model and Digital Surface Model. An analysis was conducted using a Visibility tool in ArcGIS. The non-forest areas decreased in the period 1848–2015. The viewshed in the majority of viewpoints also decreased in the period 1848–2015. In the majority of cases, the maximal viewsheds were calculated in 1879/1885 and 1933 (43.8% of the analyzed cases), whereas the minimal ones were calculated in 2015 (almost 57.5% of analyzed cases). Changes in the viewshed range from 0.2 to 23.5 kmsup2/sup with half the cases analyzed being no more than 1.4 kmsup2/sup. The results indicate that forest succession on abandoned glades does not always cause a decline in the viewshed. Deforestation in neighboring areas may be another factor that has an influence on the decline.