NDLI: Modeling of sediment generation from forest roads employing SEDMODL and its calibration for Hyrcanian forests in northern Iran

Content Provider	Springer Nature Link
Author	Naghdi, R. Dalir, P. Gholami, V. Pourghasemi, H. R.
Copyright Year	2017
Abstract	Forest roads network is one of the main sources of sediment generation in the forest watersheds. It is difficult to estimate the sediment rate using direct methods, because of more time consuming and costs. Therefore, it is vital to use erosion and sediment models that require less time and cost. To start with, the study area (northern Iran) was selected by homogeneous units based on different digital layers such as soil texture, geology, precipitation, and topography in geographic information system and supported by extensive field surveys. Afterward, the sediment trapping wooden dams were constructed on the output culverts in homogeneous units. Next, the trapped sediments were measured in 45 wooden dams and compared with the values of estimated sediments using SEDMODL 2.0. After that, thirty wooden dam samples were used for modeling/calibration aims and the remaining 15 wooden dams were used for model validation. As a result, comparing the observed sediments with the estimated sediments by SEDMODL, it has been revealed that the mean estimated sediment rate by SEDMODL was about 8% less than the actual observation values by the direct method. Moreover, the results showed that average trapping coefficient of the sediment was about 0.25 (sediments traps on the road edges). Finally, validation results for 15 wooden dams were used to investigate the accuracy of the model. Accordingly, the results exposed an increase in model efficiency after calibration for the given forest area. To enclose, the overall results showed that SEDMODL model can contribute as a tool for a quick, accurate, and acceptable generation of estimations accommodating sediment yields.
Starting Page	1
Ending Page	12
Page Count	12
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	76
Issue Number	12
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2017-06-12
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Sediment trapping Wooden dams GIS Validation Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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