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Wyświetlanie 1-6 z 6
Tytuł:
Zastosowanie Izotopu 137CS do badania erozji gleby w obszarach lessowych użytkowanych rolniczo
Use of 137Cs isotope in research of soil erosion in loessial agricultural areas
Autorzy:
Poreba, G.J.
Powiązania:
https://bibliotekanauki.pl/articles/2084653.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
tereny rolnicze
uzytkowanie rolnicze
obszary lessowe
erozja gleb
gleby
izotopy
izotop 137 Cs
Opis:
This work presents a use of the ¹³⁷Cs method in the reseach of soil erosion and sedimentation on the agricultural loessial land. There is an urgent need to obtain reliable quantitative data of the soil translocation in agricultural areas and to choose an effective method of soil conservation. After deposition on the land surface, ¹³⁷Cs is rapidly and strongly adsorbed by soil particles. The isotope has been present in the environment since the beginning of nuclear weapon testing and nowadays it is a part of many ecosystems. ¹³⁷Cs is therefore a valuable tracer to study soil erosion and sedimentation rate. Advantages and limitations of the method are discussed in this articles. The activity of the ¹³⁷Cs in soil samples from 4 slopes was measured by means of high-resolution gamma spectrometry and then the ¹³⁷Cs inventories for sampling points were calculated. The ¹³⁷Cs inventories relate to the erosion and deposition rates. The value of soil erosion was calculated by using the proportional model as well as the three mass balance models. The ¹³⁷Cs inventory for studied cultivated field ranges from less than 1.0 up to more than 10.0 kBq m⁻². Differences in ¹³⁷Cs inventory distribution on the terraced and unterraced slopes are clear. The results show that agricultural terraces in the study area were created alter the main period of cesium fallout and that the intensity of soil erosion in the study area appear to be significant.
Źródło:
Prace i Studia Geograficzne; 2010, 45; 125-142
0208-4589
Pojawia się w:
Prace i Studia Geograficzne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spływ powierzchniowy i erozja gleby w użytkowanej rolniczo mikrozlewni stokowej (Rogalów, Wyżyna Lubelska)
Runoff and soil erosion in agricultural micro catchment (Rogalow, Lubelska Upland)
Autorzy:
Jadczyszyn, J.
Powiązania:
https://bibliotekanauki.pl/articles/2084641.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
gleby
erozja gleb
splyw powierzchniowy
uzytkowanie rolnicze
mikrozlewnie
Wyzyna Lubelska
wies Rogalow
Opis:
Monitoring of water erosion and runoff processes was conducted in an agricultural micro loess catchment of 1,05 ha area located in the Lublin Upland. Results of the studies shoved that, over 250 m³ of runoff and about 11 t of soil was removed from the catchment during two and half year. On the basis of results a relationship between temporal rainfall intensity and runoff rate was developed in the form of the exponential function Sp = 1E - 05e 102,64x. The relationship between run-off and soil losses was described by logarithmic equation Eg = 0,4703Ln(x)-0,5361.
Źródło:
Prace i Studia Geograficzne; 2010, 45; 67-77
0208-4589
Pojawia się w:
Prace i Studia Geograficzne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spłukiwanie gleby na użytkowanych rolniczo stokach pogórskich w latach hydrologicznych 2007-2008 w łazach (Pogórze Wiśnickie)
Slopewash on agricultural foothill slopes in hydrological years 2007-2008 in Lazy (Wisnicz Foothills)
Autorzy:
Swiechowicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/2084638.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
lata 2007-2008
Pogorze Wisnickie
gleby
splukiwanie
tereny rolnicze
uzytkowanie rolnicze
badania hydrologiczne
erozja gleb
Opis:
The paper presents the results of slopewash studies carried out in hydrological years 2007-2008 on 7 runoff plots located within the marginal part of the Carpathian Foothills near the Research Station of the Institute of Geography and Spatial Management in Łazy. All the plots were 2 m wide. Four of them were 22.1 m long while the remaining three were 11.1, 5.5 and 2.8 m in length. All the plots were closed with 2 m Gerlach troughs. Eroded material was collected in tanks placed by every plot, while runoff was registered by means of lymnigraphs. The inclination of the plots' surface was 8°. Studies were carried on silty pseudogley soil (Stagnic Luvisols). Precipitation totals amounted to 814, l mm (2007) and 585,3 mm (2008) and these values significantly ditfered from the mean precipitation total for 1987-2008 hydrological years (661,5 mm). In 2007 the rainfall erosivity factor (EI₃₀) was 1628.9 MJ mm ha⁻¹h⁻¹ and turned out to be almost two times as much as it was for 2008 (667.0 MJ mm ha⁻¹h⁻¹). In the summer halfyear of 2007 hydrological year there were 13 slopewash events whereas in 2008 there were none. Mean annual soil erodibility [K] reached the value of 0.0377 Mg ha h MJ⁻¹mm⁻¹ha⁻¹, which is significantly lower than the value calculated on the basis of the USLE model (0.0738). Runoff varied considerably in the summer half-year. Maximum values of the runoff coefficient amounted to 39.2% for the potato, 34.2% for the fallow land, 16.3% for the winter wheat and 12.0% for the meadow. Mean annual slopewash values amounted to 31.4 kg ha⁻¹ for winter wheat, 41.9 kg ha⁻¹ for meadow, 43,396.0 kg ha⁻¹ for potato and 47,340.2 kg ha⁻¹ for fallow. The C factor value for the whole vegetation period of the potato was 0.92, and 0.0008 for the winter wheat.*
Źródło:
Prace i Studia Geograficzne; 2010, 45; 243-263
0208-4589
Pojawia się w:
Prace i Studia Geograficzne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zróżnicowanie pokrywy glebowej terenów erodowanych na przykładzie zlewni rzeki Opatówki
The differentiation of soil cover of eroded terrains on the example of Opatowka river basin
Autorzy:
Rybicki, R.
Powiązania:
https://bibliotekanauki.pl/articles/2084660.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
rzeka Opatowka
zlewnie rzek
tereny erodowane
pokrywa glebowa
gleby
erozja gleb
lessy
wody powodziowe
uzytkowanie rolnicze
ocena
Opis:
The study aimed at evaluating the changes occurred in loess soils of Opatówka river catchment (Sandomierska Upland) due to surface water erosion and long-term agricultural performance. The survey was conducted in two micro-catchments on three cross-section transcets. Soil pits and bores were made, and soil samples to laboratory examinations were collected to determine the soil type, soil texture, and general soil features. The survey confirmed occurring erosion processes. It was found that lessive soils eroded in part were present in majority of top sections and over 15% inclined slopes. They were characterized by a shortened soil profile of Ap - Bt - CCa confirmation. Slopes cultivated along the hillsides of over 15% inclination (S, W, and SW exposure) and domed tops are strongly threatened by erosion, which results in para-rendzinas of ApCa – Cca conformation. These soils contained elevated quantities of dust fraction in relation to loam. Also greater thickness of plough-humus level of soils from the slope bottoms (including valley bottoms) as compared to those from higher levels, was recorded. They were deluvial soils characterized in general by very poor permeability. The survey revealed differences in organic matter contents at various land sculpture elements. The largest amounts of humus were found in tops and at the slope bottoms. The study also indicated that lessive soils dominating in the soils of examined area, were very vulnerable to water erosion at lack of protective means (mainly an appropriate anti-erosion agrotechnics).
Źródło:
Prace i Studia Geograficzne; 2010, 45; 295-305
0208-4589
Pojawia się w:
Prace i Studia Geograficzne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metodyczne problemy badania erozji gleb za pomocą izotopu 137Cs na intensywnie użytkowanych rolniczo obszarach w klimacie monsunowym północno-wschodnich Indii
Methodological problems of soil erosion research on intensively Cultivated fields in the monsoonal climate of NE India using 1,7 Cs radionuclide
Autorzy:
Poreba, G.
Prokop, P.
Powiązania:
https://bibliotekanauki.pl/articles/2084285.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Indie Polnocno-Wschodnie
monsun indyjski
klimat
obszary rolnicze
uzytkowanie rolnicze
izotopy
izotop 137 Cs
erozja gleb
gleby
badania naukowe
Opis:
The estimation of soil erosion rates in complex tropical agricultural systems is difficult and most of the traditional methods have serious limitations. The ¹³⁷Cs technique allows to obtain relatively quickly retrospective medium term soil erosion results. The spatial variation of soil erosion rates was studied, in a small catchment under intensively cultivatcd fields and permanent grasslands on the hilly Meghalaya Plateau in India, using the ¹³⁷Cs technique. The measurcd values of cesium inventory for all sampling points are between 3% and 70% of the reference value of cesium inventory. The estimated annual soil loss depends strongly on the model used to calculation. It is visible that value obtained by simplified mass balance model (7.9-78.9 Mg·ha⁻¹·a⁻¹) and improved mass balance model (6.3-72.3 Mg·ha⁻¹·a⁻¹) are quite similar (whereas the value of soil erosion obtained by proportional model (5.6-18.1 Mg·ha⁻¹·a⁻¹) are far away from mass balance models. In case of grassland the diffusion-migration model was used and obtained results of soil erosion are lower than 0.5 Mg·ha·a⁻¹
Źródło:
Prace i Studia Geograficzne; 2013, 51; 69-90
0208-4589
Pojawia się w:
Prace i Studia Geograficzne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wąwozy lessowe w przestrzeni rolniczej wschodniej części Wyżyny Sandomierskiej
Loess ravines in the agricultural space on eastern part of Sandomierz Upland
Autorzy:
Sender, J.
Borkowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/11236544.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
wawozy lessowe
rolnictwo
Wyzyna Sandomierska
roznorodnosc biologiczna
uzytki rolne
erozja gleb
gatunki roslin
flora
fauna
uzytkowanie terenu
warunki meteorologiczne
Źródło:
Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura; 2012, 67, 1; 1-16
0365-1118
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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