Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR026655 |
Land Use Effects on Sediment Nutrient Processes in a Heavily Modified Watershed using Structural Equation Models | |
R. M. Kreiling; M. C. Thoms; L. A. Bartsch; J. H. Larson; V. G. Christensen | |
2020-06-11 | |
发表期刊 | Water Resources Research |
出版年 | 2020 |
英文摘要 | Contemporary land use can affect sediment nutrient processes in rivers draining heavily modified watersheds; however, studies linking land use to sediment nutrient processes in large river networks are limited. In this study, we developed and evaluated structural equation models (SE models) for denitrification and phosphorus retention capacity to determine direct and indirect linkages between current land use and sediment nutrient processes during base flow in the Fox River watershed, Wisconsin, USA. A large spatial‐scale dataset used for this study included sediment nitrogen and phosphorus retention measurements and land use information for 106 sites. The SE models for the Fox River watershed identified direct links between current land use and in‐stream sediment nutrient processes. Sub‐watersheds with agricultural land consisting of more natural land cover had lower surface water nitrate concentrations and higher denitrification enzyme activity than sub‐watersheds with less alternative cover. This indicates that best management practices implemented in the Fox River watershed that restore natural land cover can improve water quality through nitrogen removal on the agricultural landscape and in the river network. Best management practices are not having the same measurable effects on phosphorus in the river network, most likely due to legacy phosphorus stored in the sediment. |
领域 | 资源环境 |
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/274387 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | R. M. Kreiling,M. C. Thoms,L. A. Bartsch,et al. Land Use Effects on Sediment Nutrient Processes in a Heavily Modified Watershed using Structural Equation Models[J]. Water Resources Research,2020. |
APA | R. M. Kreiling,M. C. Thoms,L. A. Bartsch,J. H. Larson,&V. G. Christensen.(2020).Land Use Effects on Sediment Nutrient Processes in a Heavily Modified Watershed using Structural Equation Models.Water Resources Research. |
MLA | R. M. Kreiling,et al."Land Use Effects on Sediment Nutrient Processes in a Heavily Modified Watershed using Structural Equation Models".Water Resources Research (2020). |
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