Nitrate and Phosphorus Transport in a Galician River (NW Iberian Peninsula): Insights From Fourteen Years of Monitoring

IF 2 Q3 SOIL SCIENCE

Spanish Journal of Soil Science Pub Date : 2023-01-13 DOI:10.3389/sjss.2023.11108

M. Rodríguez-Blanco, M. Taboada-Castro, M. T. Taboada-Castro

引用次数: 0

Abstract

The long-term development of water quality metrics is critical to estimate the status of water resources and successful catchment management. This study looks at the temporal evolution of nitrate and phosphorus loads and concentrations in a stream draining rural catchment in Galicia (NW Iberian Peninsula) during 14 hydrological years. The concentrations of both nutrients are relatively low because of the rural nature of the research catchment and low-intensity agriculture. However, catchment nutrient reference levels were widely exceeded. The hydrology controls nutrient fluxes as flow is the main driver of nutrient transfer. For both nutrients there were no consistent trends in nutrient fluxes. The analysed nutrients, however, have been seen to behave differently. As a result, N seems to be decreasing, mainly due to decreased transit in the autumn and spring. Phosphorus, which is primarily transported as particulate matter, exhibits an increase in winter linked to a greater flow and sediment transfer.

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加利西亚河(伊比利亚半岛西北部)的硝酸盐和磷运输:来自14年监测的见解

水质指标的长期发展对于评估水资源状况和成功的集水区管理至关重要。本研究着眼于14个水文年期间加利西亚（伊比利亚半岛西北部）农村排水流域硝酸盐和磷负荷和浓度的时间演变。由于研究流域的农村性质和低强度农业，这两种营养物质的浓度都相对较低。然而，流域营养素参考水平被广泛超过。水文控制着养分通量，因为流量是养分转移的主要驱动力。对于这两种养分，养分通量没有一致的趋势。然而，所分析的营养物质表现不同。因此，N似乎在减少，主要是由于秋季和春季过境减少。磷主要以颗粒物的形式运输，在冬季表现出与更大的流量和沉积物转移有关的增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Spanish Journal of Soil Science SOIL SCIENCE-

CiteScore

2.20

自引率

0.00%

发文量

期刊介绍： The Spanish Journal of Soil Science (SJSS) is a peer-reviewed journal with open access for the publication of Soil Science research, which is published every four months. This publication welcomes works from all parts of the world and different geographic areas. It aims to publish original, innovative, and high-quality scientific papers related to field and laboratory research on all basic and applied aspects of Soil Science. The journal is also interested in interdisciplinary studies linked to soil research, short communications presenting new findings and applications, and invited state of art reviews. The journal focuses on all the different areas of Soil Science represented by the Spanish Society of Soil Science: soil genesis, morphology and micromorphology, physics, chemistry, biology, mineralogy, biochemistry and its functions, classification, survey, and soil information systems; soil fertility and plant nutrition, hydrology and geomorphology; soil evaluation and land use planning; soil protection and conservation; soil degradation and remediation; soil quality; soil-plant relationships; soils and land use change; sustainability of ecosystems; soils and environmental quality; methods of soil analysis; pedometrics; new techniques and soil education. Other fields with growing interest include: digital soil mapping, soil nanotechnology, the modelling of biological and biochemical processes, mechanisms and processes responsible for the mobilization and immobilization of nutrients, organic matter stabilization, biogeochemical nutrient cycles, the influence of climatic change on soil processes and soil-plant relationships, carbon sequestration, and the role of soils in climatic change and ecological and environmental processes.