Human activity impact on surface water quality in semi-arid regions: a case study of Aïnzeda lake (North-East Algeria)

Abstract

Water resources scarcity in Algeria, their fragility and their unequal distribution have resulted in a serious shortage, which, in spite of all the efforts, seems inevitable. This study consists of evaluating the impact of human activity on the water quality of Aïnzeda lake (NE Algeria), a typical case study of the difficulties posed by the problem of surface water quality in semi-arid regions. Principal Component Analysis (PCA) and the trend method were applied to interpret the physico-chemical data of monthly analyzed samples, over a 25-year period (1988–2012). The trend method results show that most chemical elements have a direct relationship with urbanization and agricultural practices in the area. The change in the watershed climatic conditions (increase of 9% in air temperature, 7% in the lake water temperature, and decrease of 8% in precipitation) is also responsible for the degradation of the water quality. The PCA shows that salinization (51.73%), and anthropogenic and agricultural pollution (13.49%) are the most significant degradation factors. These two approaches have enabled us to prove that aridity and anthropogenic or agricultural activities have a negative impact on the lake's surface water quality.

Analisis Trend Riset dalam Lingkungan Sumber Daya Air : Bibliometrika

“…Scopus sebagai salah satu database bibliografi multidisiplin terkemuka, menawarkan informasi tentang tren penelitian terkait sumber daya air yang berkembang di seluruh dunia. Analisis trend sumber daya air dengan memanfaatkan Scopus dapat memberikan informasi terkini tentang perkembangan ilmu pengetahuan dan teknologi dalam bidang sumber daya air dan lingkungan (Mebarkia & Boufekane, 2020;Liu & Guo, 2020;Lu et al, 2019).…”

Dinâmica espaçotemporal da qualidade das águas superficiais de dois grandes reservatórios de usinas hidrelétricas brasileiras

“…Apesar da importância dos reservatórios para a sociedade, por causa dos seus múltiplos usos, a sua construção está associada a diversos impactos socioambientais, como transformação na estrutura da comunidade aquática (LI et al, 2019), alterações no regime fluvial e na qualidade da água (XIN et al, 2015), perda de patrimônio genético (fauna e flora) (DODDS; WHILES, 2020) e mudanças na hidrodinâmica do transporte de sedimentos (LI et al, 2019;MEBARKIA;BOUFEKANE, 2020). Dessa forma, torna-se fundamental o estabelecimento de programas de monitoramento que forneçam subsídios para avaliação das condições dos corpos d'água e para a tomada de decisões ligadas ao gerenciamento dos recursos hídricos.…”