期刊
ENVIRONMENTAL MODELLING & SOFTWARE
卷 136, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envsoft.2020.104949
关键词
Generalized additive models; Visualization of trends; Surface waters; Acidification; Chemical recovery
Generalized additive models are increasingly utilized to identify and describe environmental trends, providing more precise estimates compared to simpler statistical tools, and requiring flexible visualization techniques for comprehensive analysis.
Generalized additive models are increasingly used to identify and describe environmental trends. A major advantage of these models, as compared to simpler statistical tools such as linear regression or Mann-Kendall tests, is that they provide estimates of prevailing levels and trend magnitudes at any given point in time instead of an overall measure. For multiple time series, this versatility has to be followed by flexible visualization methods that can summarize and visualize trend analysis results for many series simultaneously. Here, we propose several types of visualizations and illustrate the methods by showing trends in variables related to the recovery from acidification in Swedish riverine data over the period 1988-2017. By this, we show that generalized additive models, together with a small number of selected plots, can comprehensively illustrate prevailing trends and summarize complex information from multiple series.
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