文章基本信息

标题：Spatial and decadal variations in inorganic nitrogen wet deposition in China induced by human activity
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作者：Yanlong Jia ; Guirui Yu ; Nianpeng He 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2014
卷号：4
DOI：10.1038/srep03763
出版社：Springer Nature
摘要：Atmospheric nitrogen (N) deposition, an important component in the global N cycle, has increased sharply in recent decades in China. Here, we constructed national-scale inorganic N wet deposition (N_dep) patterns in China based on data from 280 observational sites and analysed the effects of anthropogenic sources and precipitation on N_dep. Our results showed that the mean N_dep over China increased approximately 25%, from 11.11 kg ha⁻¹ a⁻¹ in the 1990s to 13.87 in the 2000s. N_dep was highest over southern China and exhibited a decreasing gradient from southern to western and northern China. The decadal difference in N_dep between the 1990s and 2000s was primarily caused by increases in energy consumption and N fertiliser use. Our findings conformed that anthropogenic activities were the main reason for the N_dep increase and provide a scientific background for studies on ecological effects of N deposition in China.