Szymon Chmielewski

Measuring visual pollution by outdoor advertisements in an urban street using intervisibilty analysis and public surveys

ABSTRACT Debates on the encroaching commercialization of public space by outdoor advertising highlight its possible negative impact on local quality of life and enjoyment of public spaces. These overstimulating outdoor advertisements are often considered a source of visual pollution, but cities have no standard way of measuring where it exists and its local impact, and thus cannot regulate it effectively. This study illustrates that visual pollution can be measured in a useful way by relating public opinion to the number of visible advertisements (intervisibility analysis). Using a 2.5D outdoor advertisement (OA) dataset (location and height) of a busy urban street in Lublin, Poland, this preliminary experiment translates visibility into visual pollution. It was found that streetscape views with more than seven visible OAs created visual pollution in this case study. The GIS-based methodology proposed could provide Lublin officials with a basic tool to assess and manage visual pollution, by informing permitting decisions on OAs.

Land Cover and Landscape Diversity Analysis in the West Polesie Biosphere Reserve

Abstract The aim of this research was to present the land cover structure and landscape diversity in the West Polesie Biosphere Reserve. The land cover classification was performed using Object Based Image Analysis in Trimble eCognition Developer 8 software. The retrospective land cover changes analysis in 3 lake catchments (Kleszczów, Moszne, Bia³eW³odawskie Lakes)was performed on the basis of archival aerial photos taken in 1952, 1971, 1984, 1992, 2007 and one satellite scene from 2003 (IKONOS).On the basis of land cover map structure, Shannon diversity index was estimated with the moving window approach enabled in Fragstats software. The conducted research has shown that the land cover structure of the West Polesie Biosphere Reserve is diverse and can be simply described by selected landscape metrics. The highest level of land cover diversity, as showed by Shannon Diversity Index, was identified in the western part of the West Polesie Biosphere Reserve, which is closely related to the agricultural character of land cover structure in those regions. The examples of three regional retrospective land cover analyses demonstrated that the character of land cover structure has changed dramatically over the last 40 years.

Landscape’s physiognomic structure: conceptual development and practical applications

Abstract The past decade has seen an increased interest in approaches for the identification and assessment of landscapes, which has been, in part, a response to the European Landscape Convention (ELC). In this article, we review landscape physiognomy, an important component of the Polish approach to the assessment and identification of its landscape. We address the relevance of physiognomy both in relation to the ELC and to the landscape character assessments approach, and then explore the theoretical basis of landscape physiognomic structure. We also expand the existing classification of landscape interiors; this is followed by combining three approaches: (1) physical geography in the field of comprehensive classification of natural landscapes; (2) landscape ecology studies on the spatial structure of land cover patches against the ‘landscape matrix’ and (3) the theory of landscape interiors. Presented ideas create the outline of the concept of landscape’s physiognomic structure.