INFLUENCE OF GULLY EROSION ON SOIL MOISTURE OF ABANDONED FARMING DRY LAND AND RANGELAND IN LOESS LAND (CASE STUDY: KALE-SHOUR WATERSHED, GOLESTAN PROVINCE)

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TAJARI A.R.; KARDEL F.

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Journal: Journal of Soil Management and Sustainable Production Year:2015 | Volume:5 | Issue:2 Page(s): 181-195

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Title

INFLUENCE OF GULLY EROSION ON SOIL MOISTURE OF ABANDONED FARMING DRY LAND AND RANGELAND IN LOESS LAND (CASE STUDY: KALE-SHOUR WATERSHED, GOLESTAN PROVINCE)

Author(s)

TAJARI A.R. | KARDEL F. | Issue Writer Certificate

Keywords

GULLY EROSIONQ2

LAND USEQ2

ECOSYSTEM SUSTAINABILITYQ2

DESERTIFICATIONQ2

Abstract

Background and Objectives: Increased soil dryness of hillsides and lands around the gully causes the aggravation of the GULLY EROSION which leads to the desertion of the environment. Soil moisture contents are various in different soil depths, gully positions and in various LAND USEs.These are fundamental for ECOSYSTEM SUSTAINABILITY in arid and semi-arid area. Therefore, understanding the behavior of soil moisture in dry and critical periods is necessary for GULLY EROSION management based on biological conservation and restoration of vegetation around the gully. The aim of this study is to analyze the variations in the loess soil moisture around the gully with increasing distance from the gully during the dry season in the dominant LAND USEs.Materials and Methods: In this research two typical gullies were chosen, one in abandoned dry farming land and another in the rangeland. Gullies with general characteristics (depth, width, length, land slope, watershed area and vegetation cover) similar to other gullies in the area were selected for determining the index gully. Soil samples were taken from the land around the headcuts, 50% of the length and the end of the gully at the wall locations and 200 and 500 cm away from the edge of the gully and from two different depths; surface (0-30 cm) and subsurface soil (30-100 cm) in summer (from July to September 2012; once every fifteen days) and soil moisture of samples were determined.Results: The statistical results showed that the soil moisture content increased with distance from the edge of the gully (a distance of about 2 meters from the gully) in the rangeland. In other words, the evaporation of soil moisture is influenced by the gully wall and its surface soil at less than 2 meters distance from the gully. Also, in the abandoned farming dry land the surface soil moisture increased with distance from the edge of the gully, but the slope of this change was not as high as in the rangeland. The subsurface soil moisture content is higher near the gully wall than a distance further away in the abandoned farming dry land, but this decreasing trend was not as remarkable as in the rangeland.Conclusion: The results of this study revealed that gullies seriously exacerbate loss of soil moisture content around their domains. Therefore, it can be concluded that rangeland of loess land plays an effective role to prevent soil moisture evaporation which is the result of the GULLY EROSION.

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APA: Copy

TAJARI, A.R., & KARDEL, F.. (2015). INFLUENCE OF GULLY EROSION ON SOIL MOISTURE OF ABANDONED FARMING DRY LAND AND RANGELAND IN LOESS LAND (CASE STUDY: KALE-SHOUR WATERSHED, GOLESTAN PROVINCE). ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION, 5(2), 181-195. SID. https://sid.ir/paper/209951/en

Vancouver: Copy

TAJARI A.R., KARDEL F.. INFLUENCE OF GULLY EROSION ON SOIL MOISTURE OF ABANDONED FARMING DRY LAND AND RANGELAND IN LOESS LAND (CASE STUDY: KALE-SHOUR WATERSHED, GOLESTAN PROVINCE). ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION[Internet]. 2015;5(2):181-195. Available from: https://sid.ir/paper/209951/en

IEEE: Copy

A.R. TAJARI, and F. KARDEL, “INFLUENCE OF GULLY EROSION ON SOIL MOISTURE OF ABANDONED FARMING DRY LAND AND RANGELAND IN LOESS LAND (CASE STUDY: KALE-SHOUR WATERSHED, GOLESTAN PROVINCE),” ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION, vol. 5, no. 2, pp. 181–195, 2015, [Online]. Available: https://sid.ir/paper/209951/en

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