تقدير فقدان التربة باستخدام المعادلة العالمية المعدلة لفقدان التربة (RUSLE) حوض زرقاء ماعين: حالة دراسية

Ibrahim M.   Oroud; Salah   Al-Tarawneh; Atef A.  Ghumaid

doi:10.35516/hum.v51i2.1484

Authors

Ibrahim M. Oroud Department of Geography, College of Social Sciences, Mu’tah University, Karak, Jordan https://orcid.org/0000-0002-5517-699X
Salah Al-Tarawneh The Ministry of Education, Amman, Jordan
Atef A. Ghumaid The Ministry of Education, Amman, Jordan https://orcid.org/0009-0003-3501-711X

DOI:

https://doi.org/10.35516/hum.v51i2.1484

Keywords:

Erosion, Jordan, sediment yield, soil loss, soil loss equation

Abstract

Objectives: The present study examines soil loss in Wadi Zarqa Ma’in watershed, which drains the Madaba Plateau in Jordan.

Methods: The study employs the Revised Universal Soil Loss Equation (RUSLE) to map potential soil loss. Remote sensing data were obtained from the USGS website, while rainfall and soil data were obtained from the Ministry of Water and Irrigation and the Ministry of Agriculture in Jordan.

Results: The results of the study reveal that potential soil loss in the upper parts of the watershed was minimal because of the relatively flat terrains, the vegetation cover, and the widespread urban landscapes. However, significant soil loss was observed along watercourses draining the watershed due to the very steep topography and the lack of vegetation cover. According to the classification scheme of soil erosion archived by the FAO, the potential soil loss prevalent in the study area is very limited. The study reveals that the average soil loss over the entire watershed is 14.4 ton/ha per year.

Conclusion: If 40% of this soil loss is transported by waterways, there will be 120-130 thousand tons of sediment, giving a sediment volume of 80-100 ×10³ m³ each year. The current study could supply valuable quantitative guidelines to identify areas where terracing is needed to control soil erosion in watersheds. Furthermore, it could serve as a valuable decision support tool for land management aimed at protecting natural resources and conserving ecosystems.

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