Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL087051 |
Is the River a Chemostat?: Scale Versus Land Use Controls on Nitrate Concentration‐Discharge Dynamics in the Upper Mississippi River Basin | |
Richard E. Marinos; Kimberly J. Van Meter; Nandita B. Basu | |
2020-03-18 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | The Upper Mississippi River Basin (UMRB) is the largest source of reactive nitrogen (N) to the Gulf of Mexico. Concentration‐discharge (C‐Q) relationships offer a means to understand both the terrestrial sources that generate this reactive N and the in‐stream processes that transform it. Progress has been made on identifying land use controls on C‐Q dynamics. However, the impact of basin size and river network structure on C‐Q relationships is not well‐characterized. Here, we show, using high resolution nitrate concentration data, that tile drainage is a dominant control on C‐Q dynamics, with increasing drainage density contributing to more chemostatic C‐Q behavior. We further find that concentration variability increases, relative to discharge variability, with increasing basin size across six orders of magnitude, and this pattern is attributed to different spatial correlation structures for C and Q. Our results show how land use and river network structure jointly control riverine N export. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/249074 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Richard E. Marinos,Kimberly J. Van Meter,Nandita B. Basu. Is the River a Chemostat?: Scale Versus Land Use Controls on Nitrate Concentration‐Discharge Dynamics in the Upper Mississippi River Basin[J]. Geophysical Research Letters,2020. |
APA | Richard E. Marinos,Kimberly J. Van Meter,&Nandita B. Basu.(2020).Is the River a Chemostat?: Scale Versus Land Use Controls on Nitrate Concentration‐Discharge Dynamics in the Upper Mississippi River Basin.Geophysical Research Letters. |
MLA | Richard E. Marinos,et al."Is the River a Chemostat?: Scale Versus Land Use Controls on Nitrate Concentration‐Discharge Dynamics in the Upper Mississippi River Basin".Geophysical Research Letters (2020). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论