意大利皮埃蒙特和坎帕尼亚地区不同水文地质环境下地下水水化学特征的时空变异性比较研究

Daniele Cocca, Stefania Stevenazzi, D. Ducci, D. D. De Luca, M. Lasagna
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引用次数: 0

摘要

过去十年来,全球范围内对地下水化学时空演变的关注与日俱增。识别和辨别天然和人为化合物的来源、实际的水化学过程及其演变,对于支持当前和未来管理和保护地下水资源的可持续规划至关重要。本研究的主要目的是对意大利的两个研究区域(皮埃蒙特大区和坎帕尼亚大区)进行比较,以突出水文地质化学行为在空间和时间上的异同。研究考虑了三种主要离子(NO3-、SO4 2-、Na+)并对其进行了分析,以确定 2015-2020 年期间造成其空间分布的来源和水文地质化学过程,并评估 2000-2020 年期间其浓度趋势的存在和潜在原因。结果突出显示了皮埃蒙特和坎帕尼亚研究区域离子浓度空间分布和时间变化的特定因素和过程。这些过程主要与研究地区的地质和地理特征有关。在这两个地区,人为压力对空间和时间演变都产生了重大影响,三氧化二氮浓度呈显著上升趋势。总之,一些因素和过程是因地制宜的,主要与地质和自然水化学过程有关,而另一些因素和过程则是共同的(即人为影响);因此,进行比较研究的优势更加明显。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Spatio-temporal variability of groundwater hydrochemical features in different hydrogeological settings in Piedmont and Campania regions (Italy), a comparative study
The spatio-temporal evolution of groundwater chemistry has seen an increase in interest over the last decade at a global level. Identifying and discerning the sources of the natural and anthropogenic compounds and the actual hydrochemical processes, as well as their evolution, is essential to support a sustainable planning for managing and protecting groundwater resources at the present time and in the future. The main objective of this study is the comparison of two study areas in Italy (Piedmont and Campania Regions), different in their geographical and geological contexts and climate conditions, to highlight the similarities and differences in the hydrogeochemical behavior in space and time. Three main ions were considered (NO3 –, SO4 2–, Na+) and analyzed to identify the sources and hydrochemical processes responsible for their spatial distribution in the 2015-2020 period and evaluate the existence and the potential causes of trends in their concentration for the 2000-2020 period. Results highlight specific factors and processes distinguishing the spatial distribution and temporal variability of ion concentrations in Piedmont and Campania study areas. These processes are mainly related to the geological and geographical features of the study areas. In both areas, a significant influence of anthropogenic pressures emerges for both spatial and temporal evolutions, with remarkably increasing trends in NO3 – concentrations. In conclusion, some factors and processes emerge as site-specific, mainly related to the geological aspects and natural hydrochemical processes, whereas others are in common (i.e., anthropogenic impacts); thus, reinforcing the advantage of making comparative studies.
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