نتایج جستجو برای: gully erosion mapping using overlay index
تعداد نتایج: 3802357 فیلتر نتایج به سال:
This paper uses the results of river suspended sediment flux (SSF) analysis to propose a new hydrological method for quantitatively estimating the river bed and drainage basin (sheet erosion, rill and gully erosion) components of total erosion intensity in river basins. The suggested method is based on the establishment of the functional power connection between mean monthly water discharges (W...
Gully erosion is one of the important forms of soil degradation especially in semi-arid areas. Gullies are occupying 13 percent of Ilam Province area. This research focused on studying the, topographic threshold of gullies, dominant process of gully initiation and development as well, in agricultural and rangeland land uses. Ilam province with 2 million hac area is located in western Iran. Ilam...
The problems of land degradation and soil loss are among the major problems of watersheds in Iran. For erosion andsediment estimation one can use statistical and empirical methods. For doing this, land unit map and the map of effectivefactors should be prepared. For erosion and sediment estimation one can use statistical and empirical methods. However,these empirical methods are usually time co...
It is an important branch of erosion research to control soil on eroded gullies and slopes by using vegetation filter strip. Several simulated rainfall experiments were carried out in tanks filled with loess sandy loam taken from a typical gully area less coverage Yanghe hilly basin Xuanhua District, Zhangjiakou City, Hebei Province. The water conservation effects two different setting modes co...
Erosion is the main threat to sustainable water and soil management in Morocco. Located Souss-Massa watershed, rural municipality of El Faid remains an area where gully erosion a major factor involved degradation flooding. The aim this study predict spatial distribution at scale evaluate predictive capacity three prediction methods (frequency ratio (FR), logistic regression (LR), random forest ...
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