Affectability of runoff threshold and coefficient from rainfall intensity and antecedent soil moisture content in laboratorial erosion plots

Darvishan, Abdol Vahed; Sadeghi, Sayed Hamid Reza; Homaee, Mahdi; Arabkhedri, Mahmoud

Affectability of runoff threshold and coefficient from rainfall intensity and antecedent soil moisture content in laboratorial erosion plots

Document Type : Original Article

Authors

Abdol Vahed Darvishan

Sayed Hamid Reza Sadeghi

Mahdi Homaee

Mahmoud Arabkhedri

Abstract

Rainfall intensity, antecedent soil moisture condition and slope steepness are among the main important physico-climatic factors whose individual or interactive effects determine the hydrological response of a watershed to a rainfall event. The present research was conducted to study the individual and interactive effects of rainfall intensity and antecedent soil moisture contents on runoff threshold and coefficient under laboratory conditions in four rainfall intensities of 30, 50, 70 and 90 mm h-1 and five antecedent soil moisture contents of 12, 19, 29, 36 and 44 volumetric percent in sandy-loam soils taken from a summer rangeland in the Alborz Mountains, Northern Iran. The results showed the significant correlation (p

Keywords

Alborz Rangelands

Soil Moisture

Hydrological Response

Rainfall Simulation