SPATIAL VARIATIONS OF RUNOFF IN A PORT OF CALCAREOUS SOILS OF SEMI-ARID REGION IN NORTHWEST OF IRAN

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VAEZI A.R.; BAHRAMI H.A.; SADEGHI S.H.R.; MAHDIAN M.H.

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Journal: Journal of Agricultural Sciences and Natural Resources Year:2008 | Volume:15 | Issue:5 Page(s): 213-225

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Information Journal Paper

Title

SPATIAL VARIATIONS OF RUNOFF IN A PORT OF CALCAREOUS SOILS OF SEMI-ARID REGION IN NORTHWEST OF IRAN

Author(s)

VAEZI A.R. | BAHRAMI H.A. | SADEGHI S.H.R. | MAHDIAN M.H. | Issue Writer Certificate

Keywords

SPATIAL VARIATIONSQ2

CALCAREOUS SOILQ2

RUNOFFQ2

SEMI-ARID REGIONQ3

Abstract

Runoff has an important role in decreasing soil moisture and consequently declining yield of crops. Thus, investigation on SPATIAL VARIATIONS of RUNOFF and factors affecting RUNOFF is very important in selecting proper method for controlling RUNOFF. The study was conducted base on field measurements of RUNOFF at plot scale in order to determination of SPATIAL VARIATIONS of RUNOFF and factors affecting RUNOFF in soils of SEMI-ARID REGIONs. Field experiment was carried out in part of dry-farming lands of Hashtroud in south of East Azarbijan, Iran from March 2005 to March 2007. Study area was 30 km×30 km and 36 grids with a dimension of 5 km were considered on it. In each grid, three standard plots with a spacing of 1.2 m were installed and RUNOFF volume measured at the plots under natural rainfall events. Based on results, study soils are clay loam and mostly have about 12.67%. During a 2 study period, 96 rainfall events with a duration time bigger than 30 minute happened and only 41 rainfall events were caused RUNOFF in the plots. Annual RUNOFF in 36 study grids varied from 137.123 to 482.072 liter per plot with an average of 327.157 lit per plot. The results indicated that RUNOFF is significantly (R2=0.63, p<0.001) affected by coarse sand, organic matter and lime in study soils. RUNOFF also spatially varied in the study area. Spatial variability of RUNOFF was simulated as spherical model with an effective range of 2.42 km. spatial pattern of RUNOFF was similar to that one of lime (with a spherical model and an effective range of 2.42 km) in the study area. RUNOFF spatially declined when lime increased in the different points on the study area.

Cites

STUDYING THE RELATIONSHIP BETWEEN ENVIRONMENTAL FACTORS, RUNOFF CHARACTERISTICS AND INFILTRATION DEPTH USING RAINFALL SIMULATOR IN NORTHWESTERN RANGELANDS OF IRAN

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APA: Copy

VAEZI, A.R., BAHRAMI, H.A., SADEGHI, S.H.R., & MAHDIAN, M.H.. (2008). SPATIAL VARIATIONS OF RUNOFF IN A PORT OF CALCAREOUS SOILS OF SEMI-ARID REGION IN NORTHWEST OF IRAN. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, 15(5), 213-225. SID. https://sid.ir/paper/9615/en

Vancouver: Copy

VAEZI A.R., BAHRAMI H.A., SADEGHI S.H.R., MAHDIAN M.H.. SPATIAL VARIATIONS OF RUNOFF IN A PORT OF CALCAREOUS SOILS OF SEMI-ARID REGION IN NORTHWEST OF IRAN. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES[Internet]. 2008;15(5):213-225. Available from: https://sid.ir/paper/9615/en

IEEE: Copy

A.R. VAEZI, H.A. BAHRAMI, S.H.R. SADEGHI, and M.H. MAHDIAN, “SPATIAL VARIATIONS OF RUNOFF IN A PORT OF CALCAREOUS SOILS OF SEMI-ARID REGION IN NORTHWEST OF IRAN,” JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, vol. 15, no. 5, pp. 213–225, 2008, [Online]. Available: https://sid.ir/paper/9615/en

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