Trend analysis of modified Fournier erosivity and standardized precipitation indices variations in North-Khorasan Province, Iran

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SADEGHI SEYED HAMIDREZA; ZABIHI MOHSEN

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: WATERSHED ENGINEERING AND MANAGEMENT Year:2019 | Volume:10 | Issue:4 Page(s): 506-515

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Title

Trend analysis of modified Fournier erosivity and standardized precipitation indices variations in North-Khorasan Province, Iran

Author(s)

SADEGHI SEYED HAMIDREZA | ZABIHI MOHSEN | Issue Writer Certificate

Keywords

Rainfall erosivityQ1

Temporal variation of erosivityQ2

Soil and water managementQ1

Trend analysisQ1

Abstract

Rainfall erosivity factor is the first noticeable point in soil erosion issues that plays very important role in detachment of soil particle from the origin bed. Hence, investigation of Rainfall erosivity factor trend is necessary in decision-making and planning in order to manage soil and water resources. However, studies on various aspects of erosivity like trend and in interaction with precipitation and SPI index have not been attended well. The present study therefore aimed to investigate the Rainfall erosivity factor trend based on the Fournier index in 28 stations throughout North-Khorasan Province during the period of 1987 to 2006 by using the Mann-Kendall test. In addition, the SPI and precipitation trend were comprehensively investigated for better characterization of erosivity Trend analysis. Results showed that Noushirvan, Faruj, Ayerqayeh and Gholaman stations had decreasing trend and other study stations (71. 85%) had increasing trend in the modified Fournier erosivity index. The SPI and precipitation in the study area indicated that most of the stations (89. 28%) excluding Khartot, Noushirvan, Faruj and Ayerqayeh had increasing trend. The maximum and the minimum values of modified Fournier erosivity index with 70. 97 and 33. 44 mm were also assigned to Darkesh and Abiary Bojnourd stations, respectively.

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APA: Copy

SADEGHI, SEYED HAMIDREZA, & ZABIHI, MOHSEN. (2019). Trend analysis of modified Fournier erosivity and standardized precipitation indices variations in North-Khorasan Province, Iran. WATERSHED ENGINEERING AND MANAGEMENT, 10(4 ), 506-515. SID. https://sid.ir/paper/234611/en

Vancouver: Copy

SADEGHI SEYED HAMIDREZA, ZABIHI MOHSEN. Trend analysis of modified Fournier erosivity and standardized precipitation indices variations in North-Khorasan Province, Iran. WATERSHED ENGINEERING AND MANAGEMENT[Internet]. 2019;10(4 ):506-515. Available from: https://sid.ir/paper/234611/en

IEEE: Copy

SEYED HAMIDREZA SADEGHI, and MOHSEN ZABIHI, “Trend analysis of modified Fournier erosivity and standardized precipitation indices variations in North-Khorasan Province, Iran,” WATERSHED ENGINEERING AND MANAGEMENT, vol. 10, no. 4 , pp. 506–515, 2019, [Online]. Available: https://sid.ir/paper/234611/en

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