Long-term changes in wet nitrogen and sulfur deposition in Nanjing

Zhang Xiuying; Zhao Limin; Cheng Miaomiao; Liu Hongling; Wang Zhen; Wu Xiaodi; Yu Hua

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Long-term changes in wet nitrogen and sulfur deposition in Nanjing

机译：南京湿氮硫沉积物的长期变化

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The concentration and deposition of acid from precipitation in Nanjing in the Yangtze River Delta are presented, and their long-term trends are detected based on ground measurements. The wet SO42- deposition was 18.1 kg S ha(-1) yr(-1) from 2015 to 2016, which is much lower than the average across China; and the NO3- deposition was 8.5 kg N ha(-1) yr(-1) , which is higher than the national average. Both SO42- and NO3- depositions were relatively high in spring, summer, and autumn, with the lowest occurring in winter. From 1990 to 2016, the averages of SO42- deposition during each Five-year Plan gradually decreased from the 8th (1991-1995) to 12th Five-year Plan (2011-2015), although the annual value did not show a significant decreasing trend due to large variations. Both the annual value and averages of NO3- deposition during each Five-year Plan showed significant increasing trends from 1990 to 2016. The SO42- deposition during the 12th Five-year Plan decreased by 26.5% while the NO3- deposition increased by 182.9% relative to that of the 8th Five-year Plan. These results confirmed that NO3- deposition is still high in the Yangtze River Delta.

机译：介绍了长江三角洲南京地区降水中酸的浓度和沉积，并根据地面测量发现了酸的长期趋势。从2015年到2016年，湿式SO42沉积为18.1 kg S ha（-1）yr（-1），远低于中国的平均水平; NO3的沉积量为8.5 kg N ha（-1）yr（-1），高于全国平均水平。在春季，夏季和秋季，SO42和NO3-的沉积量都相对较高，而冬季则最低。从1990年到2016年，尽管年度价值并没有显示出明显的下降趋势，但每个五年计划中的SO42沉积平均值从第八个计划（1991-1995年）逐渐降低到了第十二个五年计划（2011-2015年）。由于变化很大。从1990年到2016年，每个“五年计划”中的NO3沉积量的年均值和平均值均显示出显着增长的趋势。“十二五”期间的SO42沉积物相对减少了26.5％，而NO3沉积物相对增加了182.9％达到“八五”规划的要求。这些结果证实了长三角地区的NO3沉积仍然很高。

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来源
《Atmospheric environment》 |2018年第12期|104-111|共8页
作者
Zhang Xiuying; Zhao Limin; Cheng Miaomiao; Liu Hongling; Wang Zhen; Wu Xiaodi; Yu Hua;
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作者单位

Nanjing Univ, Int Inst Earth Syst Sci, Nanjing 210023, Jiangsu, Peoples R China;

Nanjing Univ, Int Inst Earth Syst Sci, Nanjing 210023, Jiangsu, Peoples R China;

Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessmet, Beijing 10012, Peoples R China;

Nanjing Univ, State Expt Teaching Demonstrat Ctr Environm Sci &, Nanjing 210023, Jiangsu, Peoples R China;

Nanjing Univ, Int Inst Earth Syst Sci, Nanjing 210023, Jiangsu, Peoples R China;

Nanjing Univ, Int Inst Earth Syst Sci, Nanjing 210023, Jiangsu, Peoples R China;

Nanjing Univ, Int Inst Earth Syst Sci, Nanjing 210023, Jiangsu, Peoples R China;

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正文语种 eng
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关键词
Wet acid deposition; Long-term trend; Ground measurement; Nanjing;

机译：湿酸沉降长期趋势地面测量南京;

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Long-term changes in wet nitrogen and sulfur deposition in Nanjing

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