نتایج جستجو برای: the raster dataset of gully erosion conditioning factors eg altitude

تعداد نتایج: 22867105  

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In Iran.one of the extensively used methods for determine the values of erosion and sediment is Model EPM.But according to the reports, So, in this study attempted to determine the values of erosion intensity and erosion intensity mapping two methods based on Fornier and factorial scoring method to compare the EPM in Mazlqan watershed semiarid have been done. The results of the investigation in...

Journal: :مرتع و آبخیزداری 0
شاهرخ حکیم خانی 1 استادیار دانشکده منابع طبیعی، دانشگاه ارومیه، ایران

by determining relative importance and contributions of erosion types to sediment yield, erosion susceptible areas in a watershed will be identified, and sediment control and soil conservation projects can be focused on that areas. because of many problems associated with traditional procedures for identifying sediment sources, fingerprinting techniques, based on physical, chemical and organic ...

Erosion is one of the most destructive and continuous phenomena that cannot be prevented and only could be controlled by studying the chemical and physical properties of soil. Marls are one of the most important sedimentary units in Iran which have high rate in sediment production and erodibility because of their Physico-chemical characteristics. These properties caused large environmental and ...

Journal: :Remote Sensing 2015
Federica Fiorucci Francesca Ardizzone Mauro Rossi Dino Torri

Accurate mapping and measurement of erosion channels is necessary to accurately estimate the impact of channeled erosion in an area. Field surveys can provide optimal quantitative results, but they are only applicable to small areas. Recently, photogrammetric techniques have been applied to small format aerial photographs that were taken by UAVs. Few studies have applied photogrammetry for mapp...

Journal: :Soil and Water Research 2022

The widespread hillslope- and gully-erosion in Liaoning Province of Northeast China, pose serious challenges to the local agricultural production. Hillslope- have typically been studied separately; however, there has little investigation on relationship these two types erosion. In this study, coupling from perspectives erosion intensity land use, as well slope gradient, aspect, shape, was analy...

Extended abstract 1- Introduction Various factors influence the karstification process in the dissolution of carbonate rocks. Karst is common influence result of internal morphodynamics (geological structure and lithology) and external morphodynamics (climate, altitude, vegetation, and time). They affect the karstification of the demise of carbonate rocks. Karst is the result of numerous meth...

2009
Masoud Nasri Sadat Feiznia Mohammad Jafari Hasan Ahmadi

Today, incorrect use of lands and land use changes, excessive grazing, no suitable using of agricultural farms, plowing on steep slopes, road construct, building construct, mine excavation etc have been caused increasing of soil erosion and sediment yield. For erosion and sediment estimation one can use statistical and empirical methods. This needs to identify land unit map and the map of effec...

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