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Wyszukujesz frazę "erosion gullies" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Gullies development in afforested slopes in Southeastern Spain
Autorzy:
Ruiz-Sinoga, J. D.
Romero-Díaz, A.
Belmonte-Serrato, F.
Alonso-Sarría, F.
Powiązania:
https://bibliotekanauki.pl/articles/295162.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
afforestation
gullies
erosion rates
marls
semi-arid region
Spain
Opis:
In semiarid regions, the main purpose of afforestation has been to provide a protective vegetative cover in order to prevent or reduce soil erosion. This paper shows the results of a study carried out in some areas afforested in the 1970s, in steep slopes and mostly in marls. Afforestation where performed using terraced with subsoiling, so the existing scrub vegetation was removed and Pinus halepensis was planted. The main conclusion is that human action developed in this semi-arid territory, perhaps because the technique applied was not the most suitable for afforestation, has led to the geomorphological activation of the slopes and the emergence and large development of gullies.
Źródło:
Landform Analysis; 2011, 17; 173-176
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geomorphic dynamics of gullies developed in sandy slopes of Central Spain
Autorzy:
Lucía, A.
Martín-Duque, J. F.
Laronne, J. B.
Sanz-Santos, M. A.
Powiązania:
https://bibliotekanauki.pl/articles/294675.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
sand
gullies
Terrestrial Laser Scanner (TLS)
Reid bedload sampler
erosion-runoff plots
Spain
Opis:
Gullies developed on sandy lithologies are scarce. Such landforms have developed in the sandy deposits of the Cretaceous 'Utrillas' facies within the Segovia province of Central Spain. They appear at the slopes of a group of mesas and cuestas located at the edge of the northern piedmont of the Guadarrama Mountains of the Spanish Central System. The activity of the different geomorphic processes acting in these gullies, as well as their connectivity, are being characterized and quantified. This study was preceded by reconnaissance methods, whereas presently technologically advanced and more accurate techniques are being utilized. The new methods are applied in an experimental catchment (1.26 ha). They include: i) an automatic Reid-type (formerly termed Birkbeck) slot bedload sampler for continuous monitoring of bedload flux and for continuous sampling of bedload; siphons for sampling the suspended load; and a Parshall flume to monitor water discharge. Jointly, these instruments allow to study the fluvial dynamics at the catchment mouth; ii) topographic surveys undertaken by a Terrestrial Laser Scanner (TLS) to quantify the activity of gravitational, overland flow and fluvial processes in different sediment source areas within the gully basin; iii) micro runoff and erosion plots to monitor the infiltration and erosive response of different Hydrologic Response Units (HRU) comprising the interior of the catchment. This ensemble of novel methods has started providing patterns of sediment movement within the gully system.
Źródło:
Landform Analysis; 2011, 17; 91-97
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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