globalchange  > 过去全球变化的重建
DOI: 10.1371/journal.pone.0136274
论文题名:
Nitrate Accumulation and Leaching in Surface and Ground Water Based on Simulated Rainfall Experiments
作者: Hong Wang; Jian-en Gao; Xing-hua Li; Shao-long Zhang; Hong-jie Wang
刊名: PLOS ONE
ISSN: 1932-6203
出版年: 2015
发表日期: 2015-8-20
卷: 10, 期:8
语种: 英语
英文关键词: Nitrates ; Fertilizers ; Water pollution ; Rain ; Surface water ; Rivers ; Equipment ; Filter paper
英文摘要: To evaluate the process of nitrate accumulation and leaching in surface and ground water, we conducted simulated rainfall experiments. The experiments were performed in areas of 5.3 m2 with bare slopes of 3° that were treated with two nitrogen fertilizer inputs, high (22.5 g/m2 NH4NO3) and control (no fertilizer), and subjected to 2 hours of rainfall, with. From the 1st to the 7th experiments, the same content of fertilizer mixed with soil was uniformly applied to the soil surface at 10 minutes before rainfall, and no fertilizer was applied for the 8th through 12th experiments. Initially, the time-series nitrate concentration in the surface flow quickly increased, and then it rapidly decreased and gradually stabilized at a low level during the fertilizer experiments. The nitrogen loss in the surface flow primarily occurred during the first 18.6 minutes of rainfall. For the continuous fertilizer experiments, the mean nitrate concentrations in the groundwater flow remained at less than 10 mg/L before the 5th experiment, and after the 7th experiment, these nitrate concentrations were greater than 10 mg/L throughout the process. The time-series process of the changing concentration in the groundwater flow exhibited the same parabolic trend for each fertilizer experiment. However, the time at which the nitrate concentration began to change lagged behind the start time of groundwater flow by approximately 0.94 hours on average. The experiments were also performed with no fertilizer. In these experiments, the mean nitrate concentration of groundwater initially increased continuously, and then, the process exhibited the same parabolic trend as the results of the fertilization experiments. The nitrate concentration decreased in the subsequent experiments. Eight days after the 12 rainfall experiments, 50.53% of the total nitrate applied remained in the experimental soil. Nitrate residues mainly existed at the surface and in the bottom soil layers, which represents a potentially more dangerous pollution scenario for surface and ground water. The surface and subsurface flow would enter into and contaminate water bodies, thus threatening the water environment.
URL: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0136274&type=printable
Citation statistics:
被引频次[WOS]:32   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/20230
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
journal.pone.0136274.PDF(4553KB)期刊论文作者接受稿开放获取View Download

作者单位: Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi Province, China;University of Chinese Academy of Sciences, Beijing, China;Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi Province, China;Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi Province, China;College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi Province, China;College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi Province, China;College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi Province, China;College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi Province, China

Recommended Citation:
Hong Wang,Jian-en Gao,Xing-hua Li,et al. Nitrate Accumulation and Leaching in Surface and Ground Water Based on Simulated Rainfall Experiments[J]. PLOS ONE,2015-01-01,10(8)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Hong Wang]'s Articles
[Jian-en Gao]'s Articles
[Xing-hua Li]'s Articles
百度学术
Similar articles in Baidu Scholar
[Hong Wang]'s Articles
[Jian-en Gao]'s Articles
[Xing-hua Li]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Hong Wang]‘s Articles
[Jian-en Gao]‘s Articles
[Xing-hua Li]‘s Articles
Related Copyright Policies
Null
收藏/分享
文件名: journal.pone.0136274.PDF
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.