期刊
SCIENTIFIC REPORTS
卷 4, 期 -, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/srep03763
关键词
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资金
- National Key Research and Development Program [2010CB833504]
- National Natural Science Foundation of China [31290221]
- Strategic Program of State Eco-environmental Investigation and Evaluation in China [STSN-02-03]
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.
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