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Wyszukujesz frazę "erosion" wg kryterium: Temat


Tytuł:
Ephemeral gully erosion from agricultural regions in the Pacific Northwest, USA
Krotkotrwala erozja wawozowa na obszarach rolniczych w polnocno-zachodnim regionie Pacyfiku, USA.
Autorzy:
Barber, M E
Mahler, R.L.
Powiązania:
https://bibliotekanauki.pl/articles/81715.pdf
Data publikacji:
2010
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
soil erosion
ephemeral erosion
gully erosion
sediment
erosion control
remote sensing
agricultural region
Pacific Northwest region
USA
Opis:
Soil erosion continues to be problematic financially and environmentally with the USEPA ranking sediment as one of the top ten pollutants of concern in the USA. One aspect of erosion often overlooked is the role of ephemeral gullies in terms of quantity of sediment produced and amount exported to nearby waterways. Current physically-based and empirical models are inadequate for predicting this type of erosion particularly at the watershed scale. A new methodology for predicting the quantity and location of sediment delivery was developed and tested via a case study. Aerial ephemeral gully erosion rates varied from 33.6 mton/km2 (0.15 U.S. tons/acre) in the Big Bear Creek basin to 88.4 mton/km2 (0.39 U.S. tons/acre) in the Middle Potlatch Creek basin representing 2.3 to 7.7% of the total surface sediment load. This information was used to develop a predictive Erosion Potential Index (EPI) that uses LANDSAT aerial imagery combined with readily available soils information and a digital elevation model to identify the most probably locations of ephemeral gully development. High resolution aerial imagery was used to quantify actual ephemeral gully locations which were then compared to the EPI predicted locations to verify the procedure. High resolution aerial imagery was also used to quantify the amounts of soil erosion from ephemeral gullies in basins of the Potlatch River system.
W pracy przedstawiono nowa metodykę prognozowania wielkości i miejsc występowania erozji wąwozowej w skali zlewni, którą sprawdzono na podstawie badań przeprowadzonych na obszarze o łącznej powierzchni 736 km2, w sześciu zlewniach mniejszych cieków położonych w środkowej części zlewni rzeki Potlatch. W badaniach wykorzystano zdjęcia lotnicze wysokiej rozdzielczości oraz wyniki pomiarów terenowych parametrów morfologicznych krótkotrwałych wąwozów erozyjnych, na podstawie których stworzono bazę danych GIS. Uzyskane wyniki badań posłużyły do opracowania Indeksu Erozji Potencjalnej (EPI), do określenia którego wykorzystano obrazowania satelitarne LANDSAT w połączeniu z numerycznym modelem terenu oraz dostępnymi informacjami o glebach. W celu weryfikacji procedury wykorzystano zdjęcia lotnicze wysokiej rozdzielczości do określenia ilościowego lokalizacji wąwozów erozyjnych, a następnie porównano z wartościami EPI, wskazującymi przewidywane miejsca występowania wąwozów. Zdjęcia lotnicze wysokiej rozdzielczości wykorzystano również do oceny ilościowej wielkości erozji gleb spowodowanej erozją wąwozową w zlewni rzeki Potlatch.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation; 2010, 42, 1; 23-29
0208-5771
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soil erosion rate and hazard level at the Sianjo-anjo Reservoir watershed in Indonesia
Autorzy:
Gusma, Felia
Azmeri, Azmeri
Jemi, Faris Z.
Rahmatan, Hafnati
Powiązania:
https://bibliotekanauki.pl/articles/27312659.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
erosion modelling
reservoir
sediment yield
soil erosion
Opis:
The Sianjo-anjo reservoir is used to meet the need for downstream clean water. Land activity at the Sianjo-anjo reservoir watershed can potentially increase the rate of erosion and the silting of rivers and reservoirs due to sedimentation. Reservoir siltation is a crucial challenge for reservoir management because it can reduce its function and affect its service life. However, sediment yield is often overlooked in reservoir planning and environmental assessment. This study aims to predict the rate of land erosion and sediment yield, and create an erosion hazard map of the Sianjo-anjo reservoir watershed. The study used a Geographic Information System, GIS-based Universal Soil Loss Equation (USLE) method and discovered that the erosion rate of the Sianjo-anjo reservoir watershed was between 35.23 Mg∙ha-1∙y-1 until 455.08 Mg∙ha-1∙y-1, with 95.85% classified as the low level, 0.03% as moderate, and 4.12% as high. Meanwhile, the sediment yield from the Sianjo-anjo reservoir watershed was 218,812.802 Mg∙y-1. USLE is vital to identify areas susceptible to erosion and crucial for reservoir sustainability. Furthermore, it is necessary to plan good sediment management. Long-term land conservation is required to maintain storage capacity and ensure effective operation of the reservoir.
Źródło:
Journal of Water and Land Development; 2023, 57; 181--187
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling the effects of land use changes on runoff and soil erosion in two Mediterranean catchments with active gullies (South of Spain)
Autorzy:
Martínez-Murillo, J. F.
López-Vicente, M.
Poesen, J.
Ruiz-Sinoga, J. D.
Powiązania:
https://bibliotekanauki.pl/articles/294673.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
gully erosion
land use
RMMF
model
runoff
soil erosion
Opis:
This study investigates the effects of land use changes between 1956 and 2006 on runoff and soil erosion in two Mediterranean catchments (South Spain)with active gullies, by applying the RMMF Model and by comparing the erosion channel network from both years. Results underline the complexity of soil erosion dynamics in gullied catchments where a general increase in soil erosion due to land use changes can occur simultaneously with a decrease in erosion rates within the gully system.
Źródło:
Landform Analysis; 2011, 17; 99-104
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface erosion hazard and sediment yield for Keuliling Reservoir in Indonesia
Autorzy:
Azmeri, Azmeri
Nurbaiti, Nurbaiti
Mawaddah, Nurul
Yunita, Halida
Jemi, Faris Zahran
Sundary, Devi
Powiązania:
https://bibliotekanauki.pl/articles/2073740.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
erosion hazard
Keuliling reservoir
sediment yield
soil erosion
Opis:
The construction of the Keuliling Reservoir aims to accommodate and utilise water for agricultural purposes. In this research, soil erosion modelling using the USLE method showed that the level of erosion hazard for each Keuliling Reservoir sub-watershed was classified into low-moderate. Land erosion occurred in the area around the reservoir inundation is the most significant contribution to the magnitude of erosion (38.62Mg∙ha-1y-1. Based on the point of sediment sampling in the Keuliling reservoir, the sediment volume was 1.43 Mg∙m-3. So, the volumetric sediment input from the Keuliling reservoir watershed is 20.918,32 m3∙y-1. The degradation of reservoir function due to sedimentation can affect reservoir services. The ability to estimate the rate of watershed surface erosion and sediment deposition in the reservoir is vital for reservoir sustainability. Besides the land erosion in the Keuliling Reservoir, there are also other potential sources of erosion that can reduce the capacity of the reservoir, i.e. the rate of sedimentation from a reservoir cliff landslide. The USLE estimation results show that the soil erosion analysis provides important and systematic information about nature, intensity and spatial distribution in the watershed and sediment volume in the Keuliling Reservoir. This finding allows the identification of the most vulnerable areas and the type of erosion dominant for long-term land management.
Źródło:
Journal of Water and Land Development; 2022, 52; 108--118
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wielkość erozji wodnej obliczona metodą USLE
Comparison of the water erosion magnitude estimated by the modified USLE methods
Autorzy:
Kowalczyk, A.
Twardy, S.
Powiązania:
https://bibliotekanauki.pl/articles/338170.pdf
Data publikacji:
2012
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
erozja
metody ograniczania erozji
methods for reducing erosion
soil erosion
Opis:
W pracy określono ilość erodowanej gleby metodą standardową, opracowaną przez Wischmeiera i Smitha, zmodyfikowaną przez Barriosa i zmodyfikowaną przez Jianguo Ma, na długości cieku głównego. Na podstawie wyników ze zlewni Bystrzycy Dusznickiej stwierdzono, że maksymalne natężenie erozji wodnej gleb występuje na terenach użytkowanych rolniczo. Wyniki uzyskane za pomocą omawianego modelu USLE (ang. "Universal soil loss equation") wg Barriosa różnią się o ok. 17% od uzyskanych z zastosowaniem pozostałych metod, co wynika ze sposobu obliczania współczynników L i S. Przeprowadzono również obliczenia, dotyczące wpływu zmian sposobu uprawy, z których wynika, że korzystniejsze jest wykonywanie zabiegów uprawnych (orki i innych) wzdłuż warstwic. Zmniejszyło to masę erodowanej gleby o 33% dla standardowej wersji modelu, a dla pozostałych metod o ok. 71%.
In this work the water erosion magnitude was estimated by the standard method developed by Wischmeier and Smith, modified by Barrios and Jianguo Ma on the length of the main watercourse. On the basis on the results for the Bystrzyca Dusznicka catchment it was found that the maximal intensity of the soil water erosion occurs in the agriculturally utilised land. The results obtained using the discussed USLE model (Universal soil loss equation) by Barrios differs from the values obtained using the other methods of about 17%. This is the result ofthe differences in methods for calculating the L and S coefficients. A simulation of changes of different kinds of land use has also been made. It was concluded that the most favourable is contour cultivation.
Źródło:
Woda-Środowisko-Obszary Wiejskie; 2012, 12, 1; 83-92
1642-8145
Pojawia się w:
Woda-Środowisko-Obszary Wiejskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The development of ephemeral gullies in cultivated areas of Wiśnicz Foothills, Poland
Autorzy:
Święchowicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/295200.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
ephemeral gullies
rill erosion
soil erosion
Wiśnicz Foothills
Polska
Opis:
Ephemeral gullies most frequently form and develop on cultivated slopes in natural drainage lines or they are associated with man-made agricultural activities like field borders, furrows, tractor traces and cart roads. The paper presents the results of ephemeral gullies studies carried out in hydrological years 1998-2009 on cultivated slopes in the Wiśnicz Foothills. Ephemeral gullies usually form and develop during single rain or several subsequent rains of high erosivity (of several hundred MJ mm ha-1 h -1) on long cultivated slopes, particularly at the beginning of vegetation period, when most slopes are devoid of vegetation cover or plants are in the inicial stage of growth.
Źródło:
Landform Analysis; 2011, 17; 209-214
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of the Erosion Potential Method in Vithkuqi Watersheds (Southeastern Albania)
Autorzy:
Marko, Oltion
Gjipalaj, Joana
Shkodrani, Neritan
Powiązania:
https://bibliotekanauki.pl/articles/2086363.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
erosion potential method
watershed
Albania
sediment yield
soil erosion
Opis:
Soil erosion is one of the most important phenomena affecting land composition and settlement. Among all natural causes of soil erosion such as rainfall intensity, temperature and wind, the human activity; massive deforestation and intensive agriculture, including the latest climate changes are considered as very important factors, especially nowadays. Thus, calculating the soil erosion coefficient appears very important in order to prevent the phenomena. Many methods are used to calculate such coefficient but in the presented research, the Erosion Potential Method was chosen. In this study, eight watersheds in southeastern Albania were evaluated. Results show that erosion is present in all considered watersheds. In one case (Panariti watershed) the erosion coefficient was very high; excessive, while in others it varies from heavy to very slight erosion. In conclusion, it can be stated that the Erosion Potential Method can be applied in the Albanian contest, same as in other neighbor countries. The results from Panariti, Roshani and Gianci should be further investigated due to the high quantity of soil eroded.
Źródło:
Journal of Ecological Engineering; 2022, 23, 4; 17--24
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of soil erosion using the GIS-based erosion potential method in the Kebir Rhumel Watershed, Northeast Algeria
Autorzy:
Zeghmar, Amer
Marouf, Nadir
Mokhtari, Elhadj
Powiązania:
https://bibliotekanauki.pl/articles/2073737.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
Erosion Potential Method
EPM
Geographic Information System
GIS
Kebir-Rhumel
remote sensing
soil erosion
water erosion
Opis:
Soil erosion is an important factor that should be considered when planning renewable natural resource projects, effects of which can be measured by modelling techniques. Therefore, disintegration models determine soil loss intensity and support soil conservation practices. This study estimates soil loss rates by water erosion using the Erosion Potential Method (EPM) in the Kebir Rhumel Watershed located in Northeast Algeria. The area is north to south sub-humid to semi-arid, receives irregular rainfall, and has steep slopes and low vegetation cover which makes it very vulnerable to erosion. The main factors in the EPM (soil erodibility, soil protection, slope, temperature, and rainfall) were evaluated using the Geographical Information System (GIS) and data provided by remote sensing technologies. The erosion intensity coefficient Z was 0.60, which indicates medium erosion intensity. While the results showed the average annual soil erosion of 17.92 Mg∙ha-1∙y -1, maximum and minimum losses are 190.50 Mg∙ha-1∙y-1 and 0.21 Mg∙ha-1∙y-1, respectively. The EPM model shows satisfactory results compared to some studies done in the basin, where the obtained results can be used for more appropriate management of land and water resources, sustainable planning, and environmental protection.
Źródło:
Journal of Water and Land Development; 2022, 52; 133--144
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soil erosion prediction and risk assessment using RUSLE model and GIS techniques in the Nangka watershed
Autorzy:
Saadi, Yusron
Mardiana, Sus
Pradjoko, Eko
Powiązania:
https://bibliotekanauki.pl/articles/2174352.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
conservation measures
erosion hazard level
GIS techniques
RUSLE
soil erosion
watershed
Opis:
Soil erosion in the Nangka watershed has always been a matter of concern. Over the last decade, soil erosion has led to continuous environmental problems. A thorough examination of the extent of the problem was required to identify an appropriate soil conservation strategy within the watershed. This study was conducted to observe erosion rates and map out the erosion hazard level. Erosion predictions were analysed by using the Revised Universal Soil Loss Equation (RUSLE) model with the help of ArcGIS software. RUSLE was selected because of its quantitative ability to estimate average annual soil erosion and its compatibility with the GIS interface. The potential hazard of soil erosion was classified and ranked into five class categories as set by the national authority. The results reveal that the Nangka watershed is prone to soil erosion with the annual average values ranging from 1.33 Mg·ha-1·y-1 to 2472.29 Mg·ha-1·y-1. High soil erosion rates of 9.8% are in severe (class IV) and very severe (class V) conditions, primarily in the upper course of the watershed. The low annual average of soil erosion (class I and class II), which accounted for 75.95% of the total erosion, mostly took place in the steepness below 35%. The remaining area of 14.25% within the watershed is in moderate condition (class III). It is expected that the results of this study will help the authority in the implementation of soil conservation measures.
Źródło:
Journal of Water and Land Development; 2022, 55; 185--191
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of SLEMSA and USLE erosion models for potential erosion hazard mapping in South-Eastern Nigeria
Autorzy:
Igwe, C.A.
Akamigbo, F.O.R.
Mbagwu, J.S.C.
Powiązania:
https://bibliotekanauki.pl/articles/25180.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
USLE model
USLE mapping model
topography
cartography
SLEMSA erosion model
environment
soil erosion
USLE erosion model
Africa
SLEMSA model
Tropics,The
Nigeria
Źródło:
International Agrophysics; 1999, 13, 1
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The assessment of influence of soil erosion by water in the transformation of agricultural slopes of the Wiśnicz Foothills
Autorzy:
Święchowicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/294374.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
soil erosion
water
raindrop erosion
slope wash
linear erosion
Wiśnicz Foothills
Polska
erozja gleby
woda
erozja liniowa
Pogórze Wiśnickie
Polska
Opis:
The main aim of the paper is to assess influence of soil erosion by water in the transformation of agricultural slopes of the edge of Wiśnicz Foothills. Low hills are typical in the morphology of the area. Results presented come from measurements of soil erosion by water in 2007–2009. Soil erosion took place during short transformation periods and was caused by events of high magnitude and low frequency during which soil particles are transported from the slope to the channel, but its supply was only local and episodic. In the foothill area slope and channel are weakly linked.
Źródło:
Landform Analysis; 2018, 36; 85-95
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of some soil aggregate indices to assess potential soil loss in soils of south-eastern Nigeria
Autorzy:
Igwe, C.A.
Akamigbo, F.O.R.
Mbagwu, J.S.C.
Powiązania:
https://bibliotekanauki.pl/articles/25830.pdf
Data publikacji:
1995
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
aggregate index
erosion
soil loss
soil erosion
texture
soil aggregate
potential
flocculation
Nigeria
Źródło:
International Agrophysics; 1995, 09, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical properties and biological activity of erored soils under fallow in the end-moraine zone of West Pomerania [the Wegorzyno commune]
Autorzy:
Kocmit, A
Tomaszewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/1401860.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
biological activity
Polska
chemical property
soil erosion
cellulolytic activity
water erosion
eroded soil
fallow
Opis:
Since 1990 in Poland, a lot of soils have been changed to fallow.At first, degraded soils from eroded areas were changed. Some of them are fallow till today.Research work was carried out on the erroded soils that were under intense agricultural use in the 80-ties.Investigations on the superficial layer of these soils were carried out in 1995, after a four-year periodof fallow conditions. The investigations concentrated on the changes in chemical properties of the humus horizon (0 - 20cm) and changes of biological activity (0-40 cm) formed during the fallow period.The range of changes in the chemical properties was not big.However, biological activity of these soils changed more substantially. A decrease of C organic content was also characteristics. The present authors determined also a decrease of hydrolytic acidity in some soils, according to their location in the relief. In some soils, the content of Mg and K available forms was higher. Some of the soil functions related to habitation were changed too, e.g. visible forms of water erosion stopped.
Źródło:
Acta Agrophysica; 2000, 35
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Land vulnerability evaluation and climate change impacts in Andalucia, Spain: soil erosion and contamination
Autorzy:
De La Rosa, D.
Crompvoets, J.
Mayol, F.
Moreno, J.A.
Powiązania:
https://bibliotekanauki.pl/articles/24342.pdf
Data publikacji:
1996
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
land vulnerability
land evaluation
soil survey
soil erosion
erosion model
Spain
Andalucia
climate change
Źródło:
International Agrophysics; 1996, 10, 3
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conditions for soil erosion by water in the upper Parsęta catchment
Autorzy:
Szpikowski, J.
Majewski, M.
Madaj, W.
Powiązania:
https://bibliotekanauki.pl/articles/294871.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
soil erosion
soil erosion risk map
upper Parsęta catchment
modelling
GIS
erozja gleby
górna zlewnia Parsęty
modelowanie
Opis:
The paper presents potential soil erosion risk of the upper Parsęta catchment (Drawskie Lake District, NW Poland). The model considers following conditions affecting the size of soil erosion: slope gradient, LS factor, lithology, land use and land cover. Thematic maps have been reclassified into a 4-degree division. Potential soil erosion risk map was prepared on the basis of thematic maps. Areas with small and moderate susceptibility to soil erosion occupy 71.5% of the catchment area. The 4th class of erosiveness is represented by the river valley slopes, steep slopes of kame and moraine hills, covering 28.5% of the upper Parsęta catchment.
Źródło:
Landform Analysis; 2018, 36; 55-69
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł

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