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首页> 外文期刊>Journal of limnology >The water chemistry of some shallow lakes in Northern Patagonia and their nitrogen status in comparison with remote lakes in different regions of the globe
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The water chemistry of some shallow lakes in Northern Patagonia and their nitrogen status in comparison with remote lakes in different regions of the globe

机译：与全球不同地区的偏远湖泊相比，巴塔哥尼亚北部某些浅水湖泊的水化学特征及其氮素状况

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Eighteen small shallow lakes located in the Northern Patagonian Lake District, in southern South America, were sampled in 2001 and analysed for the main chemical variables (pH, conductivity, alkalinity, major ions and nutrients). The study lakes span a wide geographical and altitudinal range and belong partly to the Pacific and partly to the Atlantic watershed. The main aim of this study was to investigate the relationships between water chemistry and physical/geographical properties of these lakes. Secondly, the nitrogen content of the lakes was considered in detail, and results compared to those obtained in previous studies carried out in other remote areas of the globe (the Central Southern Alps in Italy, the Sierra da Estrela region in Portugal, the Svalbard Islands in the Arctic, the Khumbu-Himal region in Nepal, and the Terra Nova Bay area in Antarctica). In the Alps, lakes are characterised by markedly high nitrogen concentrations, manly as nitrate, due to the high inputs of nitrogen compounds from downwind sources like the Po Plain in Northern Italy. Conversely, lakes at remote locations such as the Andes, Antarctica and Himalaya are characterised by a low nitrogen content, mainly as organic nitrogen. This status is related to the limited atmospheric inputs of nitrogen affecting these regions.
机译：2001年对位于南美洲南部北巴塔哥尼亚湖区的18个小型浅湖进行了采样，并分析了其主要化学变量（pH，电导率，碱度，主要离子和养分）。研究湖泊横跨广泛的地理和海拔范围，部分属于太平洋，部分属于大西洋流域。这项研究的主要目的是研究这些湖泊的水化学与物理/地理特性之间的关系。其次，对湖泊中的氮含量进行了详细考虑，并将结果与​​先前在全球其他偏远地区（意大利中南部阿尔卑斯山，葡萄牙的塞拉达埃斯特雷拉地区，斯瓦尔巴群岛）进行的研究相比较。北极，尼泊尔的昆布-希玛尔地区和南极洲的Terra Nova湾地区）。在阿尔卑斯山，湖泊的特征是氮的浓度很高，主要是硝酸盐，这归因于来自意大利北部Po Plain等顺风来源的氮化合物的大量输入。相反，诸如安第斯山脉，南极洲和喜马拉雅山等偏远地区的湖泊的特征是氮含量低，主要是有机氮。这种状况与影响这些地区的有限的氮气输入有关。

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