Document Type : Research Paper
Authors
1 Department of Range and Watershed Management, Faculty of Natural Resources and Environment, Ferdowsi University of Mashhad, Mashhad, Iran
2 Tehran university
3 Tehran Uni
4 tehran Uni
Abstract
Extended abstract
Introduction
In the last few decades, the increasing trend of natural hazards and the destruction of natural resources under the influence of natural and human factors have become increasingly intense. One of the important methods in controlling and reducing surface runoff to adjust peak flow in flood is watershed management measures, including management and protection measures, biological or mechanical.
Materials and methods
The study area is the paired watershed of Zidasht Taleghan, treatment and control watersheds with an area of 104 hectares and 92 hectares, respectively, located inside the representative watershed with an area of 2750 hectares. In the treatment watershed, along with the protection of the entire area, banqueting along with seeding has been implemented on the area of about 12.5 hectares. In the mechanical measures section, 943 and 72.5 cubic meters of gabion structure and dry stone structure were implemented in the treatment watershed, respectively. The total reservoir created by the gabion and dry stone structures was 13,550 and 125 cubic meters, respectively.
Results and discussion
The evaluation of changes in vegetation under the effects of watershed measures showed that the percentage of vegetation and plant production is about 8% and 265 kg on average in the treatment watershed (on average, 51% vegetation and 777 kg/hectare production) more than the control watershed (on average, 43% vegetation percentage and 512 kg/hectare production). In the discussion of reducing the peak discharge of the treatment and control watersheds, the results of the evaluation of observational data showed that the peak discharge of the treatment watershed under the effects of watershed management measures was 65% lower than that of the control area (without the implementation of watershed management measures).
Keywords
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