Abstract
Abstract. The Western Rif is a rural area characterized by rock extraction and agriculture. As a result, the surface of the land in the region is exposed to different sources of contamination which alters the quality of the soil. Leaching of the soil and runoff to surface water may impact the quality of surface water used by local people. A mapping of the land use by GIS of an area located at the level of the western Rif was carried out then an analysis of the interactions between the uses of the land; the practices, the quality of the surface layer of the soil and the quality of the water were made. Thanks to the processing of satellite images and to samples on the ground and assays of the physic-chemical parameters of soils and water (T °, pH, MES, turbidity, Nitrate, nitrite, phosphorus, nitrogen, etc.). The results of these analyzes revealed that these activities lead to an alteration in the quality of the surface layer of the soil, its characterization of which changes depending on the land use. Surface water is endowed with the components identified in the soil. This reveals that land use has generally negative physical and chemical impacts on surface waters.
Highlights
The exploitation of quarries and the production of aggregates constitute a very important sector for the socio-economic development of the country (Al Rawashdeh et al; 2016)
Electrical conductivity measures the ability of water to conduct electrical current, as most of the dissolved material in water is in the form of electrically charged ions and varies proportionally with temperature fluctuations
The waters most influenced by nitrates are those located in the vicinity of industrial sites
Summary
The exploitation of quarries and the production of aggregates constitute a very important sector for the socio-economic development of the country (Al Rawashdeh et al; 2016). This sector is located upstream of the activities linked to the realisation of a large number of urban development projects (Ayenagbo et al; 2011). We need only recall its geological definition to realise this It is an artificial excavation, generally open air, used for the extraction of construction materials (limestone, granite, gypsum, sand....) (Habert et al; 2020). It is obvious that quarrying requires the occupation of space. By changing the course of surface water, an out-of-water quarry can modify, or even eliminate, part of the groundwater recharge, whereas an inwater quarry can induce, during flood periods, new preferential flows that modify, aggravate or attenuate the effects of the flood locally
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