Sediment variability in a small catchment of the Polish Western Carpathians during transition from centrally planned to free-market economics

Kijowska-Strugała, Małgorzata

doi:10.1016/j.geomorph.2018.10.008

Cited by 25 publications

(21 citation statements)

References 40 publications

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“…Present‐day changes in LC are a continuing process affected strongly by human impact. In the Carpathians, abandonment of agricultural land and gradual expansion of natural vegetation including forests have occurred since the 19th century and continue to occur (Björnsen Gurung et al, ; Kijowska‐Strugała, ; Kijowska‐Strugała, Bucała‐Hrabia, & Demczuk, ; Kozak, ). The results of this study concern transitions in LC since 1990, that is, for the most recent period of human activity, and changes are examined for catchment and regional scales.…”

Section: Discussionmentioning

confidence: 99%

Land cover transitions and changing climate conditions in the Polish Carpathians: Assessment and management implications

Kędra

Szczepanek

2019

Land Degrad Dev

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Widespread, human‐induced land cover (LC) transitions in areas surrounding national parks and nature reserves, accompanied by changing climate conditions, can trigger serious consequences for these natural environments and their ecosystems. The aim of the study was to assess the direction and magnitude of transitions in LC in the Polish Carpathians since 1990 for determining the current status of land degradation neutrality and future degradation risk as well as to analyze concomitant changes in climate conditions to enable sustainable land management. The study area encompasses six national parks with the United Nations Educational, Scientific, and Cultural Organization biosphere reserves, several dozen nature reserves, and landscape parks and is a key source of drinking water in Poland. We studied detailed changes in LC (13 classes). The Wilcoxon signed rank test indicated significant increases in built‐up areas (urban fabric and industrial/transport infrastructure), waters, dense forest cover, and herbaceous vegetation but a decrease in heterogeneous agricultural areas. On the basis of two new methods, we assessed the LC transitions for 20 mountain catchments and for the entire Polish Carpathians. Although we found a slight positive transition in LC for the entire Polish Carpathians, clearly negative transitions occurred in the five analyzed catchments, including those covering two national parks. These LC transitions are accompanied by changing climate conditions with significant increases in air temperature and precipitation. The ongoing intensive urbanization in the studied mountain region, which is accompanied by significant regional warming, implies the need to apply sustainable management practices that will avoid or reduce degradation in the catchments involved.

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Section: Discussionmentioning

confidence: 99%

Land cover transitions and changing climate conditions in the Polish Carpathians: Assessment and management implications

Kędra

Szczepanek

2019

Land Degrad Dev

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“…LULCC have reduced soil erosion in Bystrzanka catchment by 74% (based on RUSLE). Hydrometeorological data has not shown a statistically significant trend despite changes in forms of human activity in 1970-2017 [24]. In the first three decades of the analysed period , suspended sediment load gradually decreased.…”

Section: Land Use Land Cover Changes (Lulcc) and Suspended Sediment Tmentioning

confidence: 90%

“…PCA confirmed that it was a result of the appearance of new sediment sources associated with intensification of landslides, channel erosion and new forms of human activity, such as construction works. The imposition on these factors resulted in an increase in suspended sediment load and masked the effects of rainfall and LULCC in the catchment [24].…”

Section: Land Use Land Cover Changes (Lulcc) and Suspended Sediment Tmentioning

confidence: 99%

Human Impact on the Functioning of River Channels in the Polish Carpathians

Kijowska-StrugaÅ‚a¹

2019

Proceedings 2019

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Human activities, apart from natural factors, play an important role in channels changes especially in mountain areas The main objective of the study was to assess the impact of human activities on the functioning of selected river channels in the Polish Western Carpathians in the last 50 years. The research showed a significant changes in the morphology of the river channels. There has been a general tendency to channel incision mainly due to floods, channel modification and land use/land cover changes (cultivated land abandonment and increase areas with forest and grassland). Channels incision was also observed below the dams. This was due to the reduced river load of bed and suspended sediment material, which was trapped in the reservoir, and the enhanced energy of the 'hungry water'. It was also found that the influence of reservoirs on the hydromorphological state of rivers below their location is diversified and not necessarily negative. In addition, suspended sediment load in small mountain stream in the period 1970-1999 decreased due to cultivated land abandonment. After that suspended sediment load increased as a result of the appearance of a new sediment sources associated with intensification of landslides and human activity, such as construction works. The results of this study can be used as a basis for to formulate policies and manage river systems in mountain areas.

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“…During the past decade, against the backdrop of global climate changes, an increasing number of high quality studies tackling sediment transport have been published [1,2,3,4]. The sediment regime on any given stream is determined by four types of interconnected controls: (i) meteorological and hydrological factors; (ii) disruptions in landform stability (e.g., natural landslides); (iii) anthropogenic activities and (iv) changes of sediment sources [5,6,7]. In this study the focus was placed on the first category of controls due to the recent marked increase in extreme precipitation events, both in terms of frequency and intensity, with direct repercussions on flood events [8].…”

Section: Introductionmentioning

confidence: 99%

Relationships between Sediment Transport and Various Hydrological and Hydraulic Characteristics of Flood Events on Trotuș River (Romania)

Dumitriu¹

2019

Preprint

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Sediment transport is highly sensitive to flow conditions, showing significant increase during flood events. Based on this principle, this study set out to rank flood events occurring along river Trotuș (Romania) based on the amount of transported sediment and event duration. The 77 flood events recorded from 2000 to 2017 were ranked into 4 classes: type A (4%); type B (16%), type C (14%) and type D (66%). The sediment transport specific for the 4 types of flood events was related to the flow discharge (sediment rating curve and hysteresis effect), the specific stream power and the energy expenditure of these events. More than 60% of the hysteresis loops typical for flood events were clockwise, thus singling out the channel as the main sediment source. Ca. 74% of the total sediment yield was transported at stream power values higher than the 300 Wm -2 threshold, which was exceeded in less than 1% of the investigated timeframe. The changes occurring in the sediment transport rates after major floods show that these events are significant thresholds in the hydrogeomorphic evolution of river channels.

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Sediment variability in a small catchment of the Polish Western Carpathians during transition from centrally planned to free-market economics

Cited by 25 publications

References 40 publications

Land cover transitions and changing climate conditions in the Polish Carpathians: Assessment and management implications

Land cover transitions and changing climate conditions in the Polish Carpathians: Assessment and management implications

Human Impact on the Functioning of River Channels in the Polish Carpathians

Relationships between Sediment Transport and Various Hydrological and Hydraulic Characteristics of Flood Events on Trotuș River (Romania)

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