Determination of roads quota in watershed sediment yield using SEDMODEL and GIS
author
Abstract:
During the construction of road networks large area of forests and rangelands will be destroyed in the road path and its margins. This process causes massive amount of soil and rock move from its site and on adjacent lands will be accumulated, that causes increasing environmental degradation. One of the most important problems due to forest roads making is increasing of different erosion forms in around of roads, sediment yield resulting of vegetation destroy, soil structure ruin, run off velocity increasing and slope instability. In this research, sediment due to existence roads of different land use was estimated in a part of Kojour (Experimental Forest of Tarbiat Modares University) using of SEDMODEL and GIS. The results show that without considering sediment delivery ratio, erosion in this road network is about 11682.23 ton/year. With attention to sediment delivery ratio based on distance from road, sediment yield from these roads is 423/07 (71/8 %) and 165/98 (28/17 %) ton due to road surface, lateral ditch and cut slope respectively. Meanwhile with attention to sediment output that is 10560 ton, percent of sediment due to road network is about 5/57 %, whereas area of this road is about 0/31 percent of total area
similar resources
Sediment yield estimation using GIS
A method has been developed in the present study for the determination of the sediment yield from a catchment using a GIS. The method involves spatial disaggregation of the catchment into cells having uniform soil erosion characteristics. The surface erosion from each of the discretized cells is routed to the catchment outlet using the concept of sediment delivery ratio, which is defined as a f...
full textEstimation of erosion and sediment in eastern Damghan watershed using MPSIAC method and in GIS environment
این مقاله فاقد چکیده میباشد.
full textRegional estimation of sediment yield using monthly sediment rating curve in Qarasu watershed
This study was aimed at identification and determination the spatial variations of sediment yield in Qarasu watershed located in Ardebil province, NW Iran, considering the negative consequences of erosion and sediment yield. In this regard, the monthly time scale, as the basis of work, was used to prepare the sediment rating curves. Preparation of monthly sediment rating curves based on sample ...
full textEstimation of soil erosion and sediment yield using GIS
A Geographical Information System (GIS) based method is proposed and demonstrated for the identification of sediment source areas and the prediction of storm sediment yield from catchments. Data from the Nagwa and Karso catchments in Bihar (India) have been used. The Integrated Land and Water Information System (ILWIS) GIS package has been used for carrying out geographic analyses. An Earth Res...
full textEstimation of temporal variation of sediment yield using GIS
A GIS-based method is proposed for computation of temporal variation of sediment yield during isolated storm events. Data from three Indian catchments, namely Karso and Nagwa in Jharkhand and Kharkari in Rajasthan, have been used. The Integrated Land and Water Information System (ILW1S) GIS package was used for (a) catchment discretization into cell areas using grid networks, (b) evaluation of ...
full textMy Resources
Journal title
volume 3 issue 2
pages 13- 26
publication date 2013-08
By following a journal you will be notified via email when a new issue of this journal is published.
No Keywords
Hosted on Doprax cloud platform doprax.com
copyright © 2015-2023