ارزیابی کارایی خاک‌پوش‌های کاه و کلش گندم و تراشه‌های چوب در کاهش رواناب و رسوب حوزه‌های آبخیز تک منبع

نوع مقاله : مقاله پژوهشی

نویسندگان

1 علوم و مهندسی آبخیزداری، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری

2 گروه مرتع و آبخیزداری ،دانشگاه علوم کشاورزی و منابع طبیعی ساری ،ساری، ایران

3 گروه مهندسی آبخیزداری، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری

کلیدواژه‌ها

عنوان مقاله [English]

Effectiveness evaluation of wheat straw and wood shred mulches for runoff and sediment yield reduction from unit source micro-catchments

نویسندگان [English]

  • Jalal Zandi 1
  • Karim Solaimani 2
  • Mahmood Habibnezhad Roshan 3
  • , Ataollah Kavian 3
1 -Ph. D., Watershed Management Sciences & Engineering. Department of Watershed Management, Sari University of Agricural Sci. & Natural Resources
2 Watershed management, Natural resources, University of Sari Agriculture science and Natural Resources, sari iran
3 Department of Watershed Management, Sari University of Agricural Sci. & Natural Resources,
چکیده [English]

In this study, the effectiveness of wheat straw mulch and wood shred was investigated in order to reducing runoff and sediment yield from unit source micro-catchments. Three micro-catchments (one for control and two others for treatments) were selected with an area of 1/ha for each wich are located in upstream of Gheshlagh Dam in Kurdistan province. After the implementation of treatments (application rate of 3 ton. ha-1), each micro-catchment was equipped with one flume at its outlet to measure the runoff rate and turbidity during storm events across one-year sampling from 2014-2015. The result of RRE and SLRE showed that straw mulch and wood shred have reduced runoff by 24.54 and 13.24 percent, and sediment yield by 58.75 and 44.10 percent in comparison to the untreated micro-catchment, respectively. Wheat straw mulch showed better performance in reducing runoff and sediment than wood shred. This might be due to the twisted fibers of straw mulch, the formation of barrier against the flow, and filtration of sediment particles by straw.

کلیدواژه‌ها [English]

  • Soil and water conservation
  • Unit source micro-catchment
  • Mulch
  • Sediment load
  • Gheshlagh Dam

مراجع

 
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