Atmospheric Nitrogen and Phosphorus Deposition at Three Sites in Nanjing, China, and Possible Links to Nitrogen Deposition Sources. Issue 11 (8th April 2014)

• Record Type: Journal Article
• Authors: Sun, Liying; Liu, Yinglie; Wang, Jinyang; Khalil, Mohammad Aslam K.; Zou, Jianwen; Xiong, Zhengqin
• Is Part Of: Clean. Volume 42:Issue 11(2014:Nov.)
• Page Start: 1650
• Page End: 1659
• Publication Date: 2014-04-08
• Subjects: Water quality -- Periodicals; Water -- Pollution -- Periodicals; Pollution -- Periodicals; Bioremediation -- Periodicals; Sewage -- Periodicals; Water chemistry -- Periodicals; 333.7205
• DOI: 10.1002/clen.201300692
• Languages: English
• ISSNs: 1863-0650

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <sec id="clen201300692-sec-0001" sec-type="section"> <p>Atmospheric deposition is a global and increasing threat to ecosystem function. Here, we analyzed bulk and wet deposition of inorganic N, total phosphorus (TP) and δ¹⁵N of NH₄–N and NO₃–N at three sites in Nanjing from March 2010 to February 2012. Results showed that bulk deposition fluxes of inorganic N and TP averaged 54.82 kg N ha^–1 year^–1 and 1.82 kg P ha^–1 year^–1, respectively. The N/P bulk deposition ratio reached 30/1, leading ecosystems toward P‐limitation. Wet deposition fluxes of inorganic N and TP were 25.65 kg N ha^–1 year^–1 and 1.29 kg P ha^–1 year^–1, respectively, suggesting the potential contribution of inorganic N from dry deposition. Based on the δ¹⁵N values of NH₄–N and NO₃–N and model results, we found that chemical fertilizers and animal manures contributed to the reduced N deposition and fossil fuel and soil emissions contributed to the oxidized N deposition, depending upon the time and site. Agriculture sector contributed almost twice as industry while animal manures contributed significantly within agriculture.</p> </sec> </abstract>