Environmental & Socio-Economic Studies
Total Page:16
File Type:pdf, Size:1020Kb
Environmental & Socio-economic Studies DOI: 10.2478/environ-2019-0005 Environ. Socio.-econ. Stud., 2019, 7, 1: 50-58 © 2019 Copyright by University of Silesia in Katowice ________________________________________________________________________________________________ Original article Landscape transformations in the alluvial fan of the River Little Vistula (Mała Wisła) in Poland from the 18th century to the present Jakub Czaja Department of Geographical Environment Reconstruction, Faculty of Earth Sciences, University of Silesia, 60 Będzińska Str., 41-200 Sosnowiec, Poland E–mail address: [email protected] ORCID iD: https://orcid.org/0000-0002-3060-0328 _______________________________________________________________________________________________________________________________________________ ABSTRACT Development within the River Little Vistula valley undoubtedly started at the very beginnings of the Polish state. At that stage, human activity focused on finding and adapting sites that were suitable for permanent settlement and also on utilising the resources found in the valley and afforded by the river such as fishing and shipping opportunities. The shape of the River Little Vistula alluvial fan also allowed the construction of numerous canals branching from the river channel, on which mills, fulleries and sawmills were established. The characteristics of the landscape changes which have taken place in the study area have been presented on the basis of analyses of large-scale (1:28,800) topographic maps from the mid-18th and 19th centuries, modern topographic maps and also from visits to the study area (General-Mappa des Merzogthums Ober-Schleisien 1763–1764 and Übersicht der Militar Aufmahme von Mähren und Schlesien, 1839-1840). It was found that landscapes of the River Little Vistula alluvial fan are “landscapes of valleys and plains subject to water accumulation and floods”. Such areas are characterised by the presence of groundwater at low depths and are subject to periodic flooding by river waters, which are rich in mineral substances. Their habitats include riparian forests and flood meadows, which have often been transformed into arable fields. Characteristic types of soils in these areas include alluvial soils and peats, and typical elements of the landscape are water bodies, mainly fish ponds. KEY WORDS: Little Vistula Valley, alluvial fan, human impact, land use changes ARTICLE HISTORY: received 16 July 2018; received in revised form 14 January 2019; accepted 21 January 2019 ________________________________________________________________________________________________________________________________________________ 1. Introduction The rapid development of industry and urbanisation, referred to as the Industrial Revolution, resulted For many centuries, watercourses have been in river valley development processes intensifying. of interest to settlers and therefore traces of human Many industrial centres were located in river presence can be found in almost every major river valleys and the towns that had existed there for valley. In those areas, villages, settlements and cities hundreds of years expanded. have been situated and also intensive farming has While taking advantage of the benefits provided taken place because valleys offer fertile soil and by rivers both in the past and in the present, rivers provide the water required for domestic and humans have always been aware of the great agricultural purposes. River valley development danger associated with flowing water. Therefore, processes intensified in the 17th century when large since the times of early settlements built on river complexes of fish ponds began to be constructed banks, hydraulic engineering structures were alongside a network of ditches (mill races) that constructed in order to secure sufficient amounts extracted energy from water in order to drive of water in the event of drought or, conversely, the waterwheels of mills, sawmills and fulleries. protect from the devastating effects of floods. 50 This study analyzes the shaping of the Vistula economic losses have been preserved from the alluvial fan and the history of its development 15th and 16th centuries (SZEWCZUK, 1939; GIRGUŚ dating back to the 16th–18th centuries. Based on & STRUPCZEWSKI, 1965). Particularly important detailed topographical maps from the 18th, 19th information was also present in archival drawings, and 20th century, changes in the layout of particular plans and the first topographic maps. Moreover, landscape types are presented. the documents available in archives include expert Although high water stages, especially extreme opinions, plans and permits for the construction ones, have played a decisive role in shaping the of hydraulic engineering structures such as mill river channel and river valley, hydraulic engineering races, ponds, groynes, weirs, etc. Drawings and measures such as regulating and straightening topographic maps from the 18th and 19th centuries the river channel, the construction of weirs, gates, were subjected to cartometric analyses, taking check dams, groynes, etc. have been important into account the errors resulting from both the factors as well. During high water stages, these inaccuracy of the measuring instruments used at structures may initiate erosion and accumulation the time when the map was created and from the processes, in turn causing changes to the shape of control network provided by photographs, the valley and the layout of the surface hydrographic drawing techniques, reproduction, etc. (CZAJA, 2017). network. The construction of large complexes of Detailed verification of maps and plans was also fish ponds has been of considerable importance necessary due to the fact that various units of in shaping the landscape of river valleys. measurement and zero reference levels were used Development within the River Little Vistula in the Austrian Empire during the levelling works valley (Dolina Małej Wisły) undoubtedly started carried out at the time (KONIAS, 1995). at the very beginnings of the Polish state (10-11th). Gauging station measurements in the upper At that stage, human activity focused on finding River Vistula River catchment started in the second and adapting sites that were suitable for permanent half of the 19th century, so starting from that settlement and also on utilising the resources found period, we have fairly accurate information about in the valley and offered by the river such as fishing high water stages and floods. Until the catastrophic and shipping opportunities. The shape of the flood of July 1997, it was believed that the most River Little Vistula alluvial fan also allowed the significant high water stages in terms of both construction of numerous canals branching from wave height and territorial reach were the floods the river channel, on which mills, fulleries and which occurred in August 1813, also in July 1844 sawmills were established. New development and in July 1903 (MEMEL & PREGEL… 1899; FISZER, directions were initiated in the 17th century when 1995). Subsequent significant high water stages the construction of a system of fish ponds began; up occurred in 1816, 1839, 1876, 1925 and 1934 until modern times, these have been a characteristic (CZAJA & RAHMONOV, 2017). In modern times, floods feature of alluvial fan areas. have not resulted in permanent changes to the landscape of the River Vistula alluvial fan. The main 2. Source materials and research methods reason is that the impact of high water stages has been limited by hydraulic engineering A cultural landscape is considered to be a structures such as weirs, groynes and check dams. landscape shaped by man as a result of the Of importance has also been the straightening of development of civilisation and is an evolutionary the river channel and the construction of levees. succession of the natural landscape (MYGA-PIĄTEK, These works were already started at the turn of 2010). In order to assess the extent of natural and the 20th century, but it was only in the 1920s and anthropogenic changes to the landscapes of the 1930s that new structures covered the entire length River Little Vistula alluvial fan, archival materials of the River Vistula channel within its alluvial fan. were mainly used alongside modern topographic The aim of this study was the reconstruction and aerial photographs. Of great value were of changes to the landscape of the River Little descriptions of floods, including deep and long- Vistula alluvial fan from its “base” in the area of lasting low water stages, violent storms and cold Ustroń down to Strumień and Zabłocie in the western and snowy winters. In fact, what was most part of the Oświęcim Basin (Kotlina Oświęcimska) important were the hydrological, geomorphological limited by the Silesian Foothils from the south and economic effects of those events. First reports of and the edge of the Silesian – Cracovian Upland flooding in the upper reach of the River Vistula from the north. The alluvial fan area (study area) date back to the 13th century, and detailed is around 114 km2 and from the late 16th and the descriptions of events which specify the time of early 17th centuries, it was already developed for their occurrence, duration and the magnitude of fish farming purposes. The landscape was dominated 51 by numerous large ponds, which occupied around which form the base of the alluvial fan. The low, 15% of the area by the middle of the 18th century. slightly convex terrace extends northwards like a After large floods,