Nitrogen sink in a small forested watershed of subtropical China
文献类型：期刊论文
| 作者 | Huang, Laiming1,2; Yang, Jinling1,2; Zhang, Ganlin1,2 |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2011 |
| 卷号 | 23期号:3页码:468-475 |
| 关键词 | forested watershed nitrogen deposition nitrogen sink subtropical China |
| ISSN号 | 1001-0742 |
| DOI | 10.1016/S1001-0742(10)60432-9 |
| 通讯作者 | Zhang, Ganlin(glzhang@issas.ac.cn) |
| 英文摘要 | Global nitrogen (N) emission and deposition have been increased rapidly due to massive mobilization of N which may have long-reaching impacts on ecosystems. Many agricultural and forest ecosystems have been identified as secondary N sources. In the present study, the input-output budget of inorganic N in a small forested watershed of subtropical China was investigated. Inorganic N wet deposition and discharge by stream water were monitored from March, 2007 to February, 2009. The concentrations and fluxes of inorganic N in wet precipitation and stream water and net retention of N were calculated. Global N input by dry deposition and biological fixation and N output by denitrification for forested watersheds elsewhere were reported as references to evaluate whether the studied forested watershed is a source or a sink for N. The results show that the inorganic N output by the stream water is mainly caused by NO(3)(-)-N even though the input is dominated by NH(4)(+)-N. The mean flux of inorganic N input by wet precipitation and output by stream water is 1.672 and 0.537 g N/(m(2).yr), respectively, which indicates that most of inorganic N input is retained in the forested watershed. Net retention of inorganic N reaches 1.135 g N/(m(2).yr) considering wet precipitation as the main input and stream water as the main output. If N input by dry deposition and biological fixation and output by denitrification are taken into account, this subtropical forested watershed currently acts as a considerable sink for N, with a net sink ranging from 1.309 to 1.913 g N/(m(2).yr) which may enhance carbon sequestration of the terrestrial ecosystem. |
| 收录类别 | SCI |
| WOS关键词 | NORTHEASTERN UNITED-STATES ; INPUT-OUTPUT BUDGETS ; SOUTH CHINA ; TERRESTRIAL ECOSYSTEMS ; INORGANIC NITROGEN ; N-DEPOSITION ; SOILS ; PRECIPITATION ; SATURATION ; IMPACTS |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000288576500016 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558972 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Zhang, Ganlin |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Laiming,Yang, Jinling,Zhang, Ganlin. Nitrogen sink in a small forested watershed of subtropical China[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2011,23(3):468-475. |
| APA | Huang, Laiming,Yang, Jinling,&Zhang, Ganlin.(2011).Nitrogen sink in a small forested watershed of subtropical China.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,23(3),468-475. |
| MLA | Huang, Laiming,et al."Nitrogen sink in a small forested watershed of subtropical China".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 23.3(2011):468-475. |
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来源：南京土壤研究所
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