Net anthropogenic nitrogen inputs (NANI) index application in Mainland China
文献类型：期刊论文
| 作者 | Han, Yuguo ; Fan, Yuntao ; Yang, Peiling ; Wang, Xiaoxue ; Wang, Yujie ; Tian, Jinxia ; Xu, Lei ; Wang, Chengzhi |
| 刊名 | GEODERMA
 |
| 出版日期 | 2014 |
| 卷号 | 213期号:1页码:87-94 |
| 关键词 | Anthropogenic Nitrogen input Atmospheric N deposition Seeding nitrogen Nitrogen fertilizer use N fixation |
| ISSN号 | 0016-7061 |
| 中文摘要 | This study provides a new understanding to sources of nitrogen (N), and may serve as a foundation for further exploration of anthropogenic effects on N inputs. Estimation of net anthropogenic nitrogen inputs (NANI) was based on an inventory of atmospheric N deposition, N fertilizer use, N in human food and animal feed, seeding N and N fixation. This study took a step forward to calculate NANI in detail on a regional scale, and analyzed its temporal variations and geographic differences. Over the past 28 years, NANI increased significantly in Mainland China, from 2360 kg N km(-2) yr(-1) to 5013 kg N km(-2) yr(-1). On a geographical basis, NANI was higher in southeast where China's eight major watersheds are located than in northwest, and the largest NANI, 26160 kg N km(-2) yr(-1), appeared in Shanghai. The administrative regions corresponding to Haihe watershed, Huaihe watershed and Tai lake watershed have the largest NANI. N input of fertilizer is the largest source of NANI, followed by atmospheric N deposition and N fixation. The primary factor in relation to the change in NANI is total population density, followed by cultivated land area and total grain yield. In those densely populated large cities and watersheds, reasonably allocating the social resources to reduce the existing population density is the most effective way to address the problem of high N inputs, while in those agriculture-dominated regions and watersheds, the most effective way for reducing NANI is to improve fertilizer utilization efficiency in agriculture. (C) 2013 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000329594800011 |
| 公开日期 | 2015-03-24 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9408]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Han, Yuguo,Fan, Yuntao,Yang, Peiling,et al. Net anthropogenic nitrogen inputs (NANI) index application in Mainland China[J]. GEODERMA,2014,213(1):87-94. |
| APA | Han, Yuguo.,Fan, Yuntao.,Yang, Peiling.,Wang, Xiaoxue.,Wang, Yujie.,...&Wang, Chengzhi.(2014).Net anthropogenic nitrogen inputs (NANI) index application in Mainland China.GEODERMA,213(1),87-94. |
| MLA | Han, Yuguo,et al."Net anthropogenic nitrogen inputs (NANI) index application in Mainland China".GEODERMA 213.1(2014):87-94. |
入库方式： OAI收割
来源：生态环境研究中心
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