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Land use, geology and soil properties control nutrient concentrations in headwater streams

Djodjic, Faruk and Bieroza, Magdalena and Bergström, Lars (2021). Land use, geology and soil properties control nutrient concentrations in headwater streams. Science of the Total Environment. 772 , 145108
[Research article]

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Abstract

Nutrient losses from headwater catchments (<50 km(2)) cause eutrophication problems downstream. Catchment properties are strongly reflected in the levels of nutrient concentrations in headwater streams. Based on measurements of total and dissolved nitrogen (TN, DN) and phosphorus (TP, DP) in 235 small headwater streams, we showed that proportion of arable land in a catchment had the strongest positive effect on nutrient concentrations, with coefficient of determination (R-2) of 0.54, 0.64, 0.45, and 0.51 for TN, DN, TP, and DP, respectively. In contrast, increased proportion of forest and wetland led to lower nutrient concentrations in streams. The geological composition of catchments had a major influence on the soil properties. In turn, certain soil properties, such as clay content and content of aluminum (Al), an important binding agent of P. influenced losses of particulate P (PP) and DP, respectively. Consequently, by using soil properties as a link between geology and water quality, areas potentially sensitive to nutrient losses were identified by classifying bedrock categories into three geological groups. Approximately 25% of Swedish arable land was identified as potentially sensitive. Sensitive catchments were found in regions with sedimentary bedrock and showed higher concentrations of dissolved nutrient fractions even when the proportion of agricultural land was small, indicating higher background concentrations. (C) 2021 The Author(s). Published by Elsevier B.V.

Authors/Creators:Djodjic, Faruk and Bieroza, Magdalena and Bergström, Lars
Title:Land use, geology and soil properties control nutrient concentrations in headwater streams
Series Name/Journal:Science of the Total Environment
Year of publishing :2021
Volume:772
Article number:145108
Number of Pages:8
Publisher:ELSEVIER
ISSN:0048-9697
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Oceanography, Hydrology, Water Resources
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 405 Other Agricultural Sciences > Environmental Sciences related to Agriculture and Land-use
Keywords:Nitrogen, Phosphorus, Land use, Soil properties, Geology, Headwater catchments
URN:NBN:urn:nbn:se:slu:epsilon-p-111564
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-111564
Additional ID:
Type of IDID
DOI10.1016/j.scitotenv.2021.145108
Web of Science (WoS)000628753700066
ID Code:23324
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:22 Apr 2021 11:43
Metadata Last Modified:22 Apr 2021 11:51

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