Relationship between annual soil erosion and surface runoff in Wadi Hanifa sub-basins

IF 1.7 4区 地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY Open Geosciences Pub Date : 2023-12-26 DOI:10.1515/geo-2022-0505
Hassan Alzahrani
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Abstract

Soil erosion is the major environmental risk that causes topsoil loss, which decreases fertility in agricultural land. Spatial estimation of soil erosion is essential for conserving land resources and for developing control plans. This study evaluated soil erosion in 17 sub-basins of the Wadi Hanifa catchment using the Gavrilović model. The soil erosion rate is categorized into three classes based on the annual volume of rainfall and runoff. About 21% of the drainage area of Wadi Hanifa is affected by erosion severity, and 33% of the area is affected by severe erosion. The correlation obtained between the annual soil erosion and annual volumes of rainfall and runoff is significant. It is concluded from the results that the drainage area of the north-western part suffers from a high soil erosion risk. The NRCS-CN and erosion predict that the Gavrilović model can be applied for estimating and analyzing the spatial distribution of soil erosion over more drainage watersheds in Saudi Arabia. Now, the GIS techniques are one of the best tools for developing the conservation and management planning processes of soil resources.
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瓦迪哈尼法子流域年土壤侵蚀量与地表径流量之间的关系
水土流失是造成表土流失的主要环境风险,会降低农田的肥力。对土壤侵蚀进行空间估算对于保护土地资源和制定控制计划至关重要。本研究使用 Gavrilović 模型对瓦迪哈尼法集水区 17 个子流域的土壤侵蚀情况进行了评估。根据年降雨量和径流量,土壤侵蚀率被分为三个等级。瓦迪哈尼法流域约 21% 的面积受到严重侵蚀的影响,33% 的面积受到严重侵蚀的影响。年土壤侵蚀量与年降雨量和径流量之间存在显著的相关性。从结果中可以得出结论,西北部排水区的水土流失风险较高。根据 NRCS-CN 和水土流失预测,Gavrilović 模型可用于估算和分析沙特阿拉伯更多排水流域的水土流失空间分布情况。目前,地理信息系统技术是制定土壤资源保护和管理规划流程的最佳工具之一。
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来源期刊
Open Geosciences
Open Geosciences GEOSCIENCES, MULTIDISCIPLINARY-
CiteScore
3.10
自引率
10.00%
发文量
63
审稿时长
15 weeks
期刊介绍: Open Geosciences (formerly Central European Journal of Geosciences - CEJG) is an open access, peer-reviewed journal publishing original research results from all fields of Earth Sciences such as: Atmospheric Sciences, Geology, Geophysics, Geography, Oceanography and Hydrology, Glaciology, Speleology, Volcanology, Soil Science, Palaeoecology, Geotourism, Geoinformatics, Geostatistics.
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