ROLES OF SAR AND EC IN GULLY EROSION DEVELOPMENT (A CASE STUDY OF KOHGILOYE VA BOYERAHMAD PROVINCE, IRAN)

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SHAHRIVAR ABDAL; TEH BOON SUNG CHRISTOPHER; SHAMSUDDIN JUSOP; ABDUL RAHIM ANUAR; SOUFI MAJID

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Journal: JOURNAL OF RESEARCH IN AGRICULTURAL SCIENCE Year:2012 | Volume:8 | Issue:1 (14) Page(s): 1-12

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Title

ROLES OF SAR AND EC IN GULLY EROSION DEVELOPMENT (A CASE STUDY OF KOHGILOYE VA BOYERAHMAD PROVINCE, IRAN)

Author(s)

Keywords

GULLY EROSIONQ2

SODIUM ABSORPTION RATIO (SAR)Q2

ELECTRICAL CONDUCTIVITY (EC)Q2

SEMI-ARID AREAQ2

KOHGILOYE VA BOYERAHMAD PROVINCEQ2

Abstract

GULLY EROSION is a serious problem of land degradation in pasture land of Sothern Iran. To study the causes of GULLY EROSION initiation, the Abgendi Watershed with the highest amount of GULLY EROSION was selected as a SEMI-ARID AREA in Iran. In this area, 35 gullies were randomly chosen and the influences of SAR and EC, as the indexes of alkalinity and salinity on GULLY EROSION, were investigated. The role of sodium in calculating SAR, and the effective role of sodium to soil dispersing, It can increase the susceptibility of soil to water erosion. Moreover, concentration of soluble salts (are measured by electrical conductivity), such as sodium cations are attached to each soil clay particle in the arid and SEMI-ARID AREAs. To accomplish this study, soil sampling from headcut and gully walls in two depths of 0-30 cm (top layer) and 30cm to the bottom of gully (sub-layer) was carried out. One main objective of the present study was to determine the effects of these two chemical factors on GULLY EROSION development. Based on gullies volume (as a dependent variable), the gullies were classified into four groups and were compared in terms of EC and SAR. The results indicated that the gullies with volume of more than 200 m3 (big gully group), in comparison to the gullies with volume less than 50 m3 (very small gully group), have greater EC and SAR. The amounts of EC and SAR of big gully group were significantly higher than very small gully group. Moreover, for the purpose of further analysis, the gullies were classified and compared in terms of EC and SAR. The results indicated that there is a significant difference between gullies volume groups in terms of EC and SAR as well. The gullies with EC>8 dS/m and SAR>8, compared to the gullies with EC<4 dS/m and SAR<4, have significantly greater volume and length.

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APA: Copy

SHAHRIVAR, ABDAL, TEH BOON SUNG, CHRISTOPHER, SHAMSUDDIN, JUSOP, ABDUL RAHIM, ANUAR, & SOUFI, MAJID. (2012). ROLES OF SAR AND EC IN GULLY EROSION DEVELOPMENT (A CASE STUDY OF KOHGILOYE VA BOYERAHMAD PROVINCE, IRAN). JOURNAL OF RESEARCH IN AGRICULTURAL SCIENCE, 8(1 (14)), 1-12. SID. https://sid.ir/paper/115220/en

Vancouver: Copy

SHAHRIVAR ABDAL, TEH BOON SUNG CHRISTOPHER, SHAMSUDDIN JUSOP, ABDUL RAHIM ANUAR, SOUFI MAJID. ROLES OF SAR AND EC IN GULLY EROSION DEVELOPMENT (A CASE STUDY OF KOHGILOYE VA BOYERAHMAD PROVINCE, IRAN). JOURNAL OF RESEARCH IN AGRICULTURAL SCIENCE[Internet]. 2012;8(1 (14)):1-12. Available from: https://sid.ir/paper/115220/en

IEEE: Copy

ABDAL SHAHRIVAR, CHRISTOPHER TEH BOON SUNG, JUSOP SHAMSUDDIN, ANUAR ABDUL RAHIM, and MAJID SOUFI, “ROLES OF SAR AND EC IN GULLY EROSION DEVELOPMENT (A CASE STUDY OF KOHGILOYE VA BOYERAHMAD PROVINCE, IRAN),” JOURNAL OF RESEARCH IN AGRICULTURAL SCIENCE, vol. 8, no. 1 (14), pp. 1–12, 2012, [Online]. Available: https://sid.ir/paper/115220/en

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