CHANGES IN THE MIDDLE SECTION OF THE NAREW RIVER (BETWEEN OSTROŁĘKA AND ŁOMŻA) IN VIEW OF NATURAL FACTORS AND ANTHROPOGENIC PRESSURES

Journal of Ecological Engineering

Józef Koc¹  Sławomir Szymczyk¹  Ireneusz Cymes¹  Bożena Grabińska¹ 

[1] Department of Land Improvement and Environmental Management, University of Warmia and Mazury in Olsztyn, Pl. Łódzki 2, 10-719 Olsztyn, Poland;

关键词: Middle Narew River;    horizontal profile;    development of the riverbed;    cartographic analysis;   

DOI  :  10.12911/22998993.1094975

来源: DOAJ

【 摘 要 】

Contemporary and archive cartographic materials illustrating horizontal profile of the middle channel of the Narew River (between Ostrołęka and Łomża) were compared in the GeoMedia application. The results of the analysis revealed that natural and anthropogenic factors had not significantly contributed to changes in the channel profile over a period of two centuries. Narew is a meandering river, and its activity is associated with intensified erosion of right-bank bends and lateral movement along its flat-bed channel. The most noticeable changes include reduced area of oxbow lakes, mainly due to succession, and suburban settlement in floodplains that had been regarded as unfit for development in the 20th century.

【 授权许可】

Unknown