Twenty years of nitrogen deposition to Norway spruce forests in Sweden
(2022) In Science of the Total Environment 809.- Abstract
The yearly, total (dry+wet) deposition of inorganic nitrogen (inorg-N) to Norway spruce forests was estimated with a full spatial coverage over Sweden for a twenty-year period, 2001–2020, based on combined measurements with Teflon string samplers, throughfall deposition and bulk deposition to the open field. The results were based on a novel method to apply estimates of the dry deposition based on measurements at a limited number of sites, to a larger number of sites with only bulk deposition measurements, in turn based on the existence of a strong geographical gradient in the dry deposition of inorg-N from southwest to northeast Sweden. The method should be applicable for other geographical regions where gaseous NH3,... (More)
The yearly, total (dry+wet) deposition of inorganic nitrogen (inorg-N) to Norway spruce forests was estimated with a full spatial coverage over Sweden for a twenty-year period, 2001–2020, based on combined measurements with Teflon string samplers, throughfall deposition and bulk deposition to the open field. The results were based on a novel method to apply estimates of the dry deposition based on measurements at a limited number of sites, to a larger number of sites with only bulk deposition measurements, in turn based on the existence of a strong geographical gradient in the dry deposition of inorg-N from southwest to northeast Sweden. The method should be applicable for other geographical regions where gaseous NH3, NO2 and HNO3 are not main drivers of N dry deposition and where geographical gradients in dry deposition could be defined. It was shown that Norway spruce forests in south Sweden receive more N from deposition than has been previously estimated, based on modelling. Clear time trends were demonstrated for decreased deposition of inorg-N to Norway spruce forests in all parts of Sweden. The decreases were somewhat larger than what could be expected from the decrease in the reported emissions of inorg-N from Europe. The results emphasize that estimates of the total deposition are necessary in order to map levels and follow the development of N deposition in forests.
(Less)
- author
- Karlsson, P. E. ; Akselsson, C. LU ; Hellsten, S. LU and Pihl Karlsson, G.
- organization
- publishing date
- 2022-02-25
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Critical loads, Forest, Inorganic nitrogen, Surrogate surface, Teflon strings, Time trends
- in
- Science of the Total Environment
- volume
- 809
- article number
- 152192
- publisher
- Elsevier
- external identifiers
-
- pmid:34883179
- scopus:85120879775
- ISSN
- 0048-9697
- DOI
- 10.1016/j.scitotenv.2021.152192
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2021 The Authors
- id
- 40409b34-339a-4692-bc23-22d3393d95a5
- date added to LUP
- 2022-01-11 17:28:21
- date last changed
- 2024-04-20 18:55:01
@article{40409b34-339a-4692-bc23-22d3393d95a5,
abstract = {{<p>The yearly, total (dry+wet) deposition of inorganic nitrogen (inorg-N) to Norway spruce forests was estimated with a full spatial coverage over Sweden for a twenty-year period, 2001–2020, based on combined measurements with Teflon string samplers, throughfall deposition and bulk deposition to the open field. The results were based on a novel method to apply estimates of the dry deposition based on measurements at a limited number of sites, to a larger number of sites with only bulk deposition measurements, in turn based on the existence of a strong geographical gradient in the dry deposition of inorg-N from southwest to northeast Sweden. The method should be applicable for other geographical regions where gaseous NH<sub>3</sub>, NO<sub>2</sub> and HNO<sub>3</sub> are not main drivers of N dry deposition and where geographical gradients in dry deposition could be defined. It was shown that Norway spruce forests in south Sweden receive more N from deposition than has been previously estimated, based on modelling. Clear time trends were demonstrated for decreased deposition of inorg-N to Norway spruce forests in all parts of Sweden. The decreases were somewhat larger than what could be expected from the decrease in the reported emissions of inorg-N from Europe. The results emphasize that estimates of the total deposition are necessary in order to map levels and follow the development of N deposition in forests.</p>}},
author = {{Karlsson, P. E. and Akselsson, C. and Hellsten, S. and Pihl Karlsson, G.}},
issn = {{0048-9697}},
keywords = {{Critical loads; Forest; Inorganic nitrogen; Surrogate surface; Teflon strings; Time trends}},
language = {{eng}},
month = {{02}},
publisher = {{Elsevier}},
series = {{Science of the Total Environment}},
title = {{Twenty years of nitrogen deposition to Norway spruce forests in Sweden}},
url = {{http://dx.doi.org/10.1016/j.scitotenv.2021.152192}},
doi = {{10.1016/j.scitotenv.2021.152192}},
volume = {{809}},
year = {{2022}},
}