Volume 11, Issue 22 (10-2020)                   J Watershed Manage Res 2020, 11(22): 243-253 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Mohammadamini H, Khaledi darvishan A, Alavi J. (2020). Effects of Soil Surface Rock Fragments on Runoff Variables of Field Plots under Rainfall Simulation. J Watershed Manage Res. 11(22), 243-253. doi:10.52547/jwmr.11.22.243
URL: http://jwmr.sanru.ac.ir/article-1-942-en.html
Tarbiat Modares University
Abstract:   (2173 Views)
    Soil surface rock fragment is considered as an important factor on runoff and soil erosion. However, few studies have been focused on quantitative evaluation of the effect of soil surface rock fragments on runoff components as an integral part of soil erosion process especially in natural conditions. The present study has been conducted to evaluate the effect of soil surface rock fragments on runoff components in field plots under rainfall simulation on a clay-loam soil generally less than 1 meter depth and the slope of 20%. Runoff components including runoff commencement time, volume, coefficient and end time were measured in 1×1 m field plots with 6 wide range of surface rock fragments (2±2, 10±2, 18±2, 26±2, 34±2 and 42±2 % of soil surface cover) with 3 replications under simulated rainfall with constant intensity of 40 mm h-1. The results showed that increasing surface rock fragments up to a specific soil surface cover (about 34%) led to increase infiltration and runoff commencement time, decrease runoff volume and coefficient and runoff end time. The trend of runoff components has been reversed in the range of 34 to 42% of soil surface rock fragments.
Full-Text [PDF 1327 kb]   (622 Downloads)    
Type of Study: Research | Subject: فرسايش خاک و توليد رسوب
Received: 2018/05/28 | Revised: 2021/03/3 | Accepted: 2020/06/10 | Published: 2021/03/3

Add your comments about this article : Your username or Email:

Send email to the article author

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2024 CC BY-NC 4.0 | Journal of Watershed Management Research

Designed & Developed by : Yektaweb