Regional Variability of Agriculturally-Derived Nitrate-Nitrogen in Shallow Groundwater in China, 2004-2014
文献类型：期刊论文
| 作者 | Li, Jing1,2 ; He, Zhibin1; Du, Jun1; Zhao, Liwen1; Chen, Longfei1; Zhu, Xi1,2; Lin, Pengfei1,2; Fang, Shu1,2; Zhao, Minmin1,2; Tian, Quanyan1,2
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| 刊名 | SUSTAINABILITY
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| 出版日期 | 2018-05-01 |
| 卷号 | 10期号:5页码:13 |
| 关键词 | shallow groundwater agro-ecosystems NO3--N concentration China |
| ISSN号 | 2071-1050 |
| DOI | 10.3390/su10051393 |
| 通讯作者 | He, Zhibin(hzbmail@lzb.ac.cn) |
| 英文摘要 | Increasing diffuse nitrate loading of groundwater has long been a major environmental and health concern in China, but little is known about the spatial and temporal variability of nitrate concentrations in groundwater at regional scales. The aim of this study was to assess the spatial distribution and variation of nitrate-nitrogen (NO3--N) concentrations in groundwater. We used groundwater quality monitoring data and soil physical characteristics from 21 agro-ecosystems in China for years 2004 to 2014. The results indicated that NO3--N concentrations were highly variable in shallow groundwater across the landscape. Over the study period, most of the NO3--N concentrations were below the World Health Organization permissible limit for drinking water (<10 mg N center dot L). NO3--N concentrations in groundwater neither significantly increased nor decreased in most agro-ecosystems, but fluctuated with seasons. In addition, groundwater NO3--N under purple soil (6.81 mg center dot L-1) and Aeolian sandy soil (6.02 mg center dot L-1) were significantly higher (p < 0.05) than that under other soil types, and it was medium-high (4.49 mg center dot L-1) under aquic cinnamon soil. Elevated nitrate concentrations occurred mainly in oasis agricultural areas of northwestern China, where farmlands with coarse-textured soils use flood irrigation. Therefore, arid and semi-arid areas are expected to sustain high NO3--N concentrations in groundwater. Mitigation strategies can prevent this problem, and include control of N fertilizer input, balanced fertilization, proper rotation system, adoption of improved irrigation methods, and establishment of environmental policies. |
| WOS关键词 | RESEARCH NETWORK CERN ; HEIHE RIVER-BASIN ; LONG-TERM FATE ; NORTHERN CHINA ; POLLUTION ; WATER ; ACCUMULATION ; FERTILIZER ; QUALITY ; IMPACT |
| 资助项目 | national key research and development program of China[2017YFC0504306] ; Major Program of National Natural Science Foundation of China[41630861] ; National Natural Science Foundation of China[41501044] ; CAS Light of West China Program |
| WOS研究方向 | Science & Technology - Other Topics ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000435587100089 |
| 出版者 | MDPI |
| 资助机构 | national key research and development program of China ; Major Program of National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS Light of West China Program |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/54631]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | He, Zhibin |
| 作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Chinese Ecosyst Res Network,Linze Inland River Ba, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Jing,He, Zhibin,Du, Jun,et al. Regional Variability of Agriculturally-Derived Nitrate-Nitrogen in Shallow Groundwater in China, 2004-2014[J]. SUSTAINABILITY,2018,10(5):13. |
| APA | Li, Jing.,He, Zhibin.,Du, Jun.,Zhao, Liwen.,Chen, Longfei.,...&Tian, Quanyan.(2018).Regional Variability of Agriculturally-Derived Nitrate-Nitrogen in Shallow Groundwater in China, 2004-2014.SUSTAINABILITY,10(5),13. |
| MLA | Li, Jing,et al."Regional Variability of Agriculturally-Derived Nitrate-Nitrogen in Shallow Groundwater in China, 2004-2014".SUSTAINABILITY 10.5(2018):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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