Regionalized nitrogen budgets in forest soils for different deposition and forestry scenarios in Sweden
(2005) In Global Ecology and Biogeography Letters 14(1). p.85-95- Abstract
- Aim The aim of this work was to estimate on a regional scale the effects of nitrogen (N) deposition and harvest intensity on N-budgets in forest soils as a basis for strategies of emission reduction and sustainable forest management methods. Location The calculations were applied to Sweden, a country with a managed forest area of 23 x 10(6) ha. Methods Mass balance calculations, including N-deposition, N-fixation, N-loss through harvest, and N-leaching, were performed on a GIS platform using 5 x 5 km grids. Modelled deposition data together with spatial data obtained from the National Forest Inventory served as the basis for the calculations. Four different scenarios were run: a 'base scenario' involving present deposition and conventional... (More)
- Aim The aim of this work was to estimate on a regional scale the effects of nitrogen (N) deposition and harvest intensity on N-budgets in forest soils as a basis for strategies of emission reduction and sustainable forest management methods. Location The calculations were applied to Sweden, a country with a managed forest area of 23 x 10(6) ha. Methods Mass balance calculations, including N-deposition, N-fixation, N-loss through harvest, and N-leaching, were performed on a GIS platform using 5 x 5 km grids. Modelled deposition data together with spatial data obtained from the National Forest Inventory served as the basis for the calculations. Four different scenarios were run: a 'base scenario' involving present deposition and conventional forestry (stem harvest only); a 'whole-tree harvesting scenario' with present deposition and the harvesting of stems, branches and needles; a 'decreased deposition scenario'; and a 'whole-tree harvesting and decreased deposition scenario'. Results There was a sharp N-accumulation gradient with an increase in accumulation in the direction of the south-western part of Sweden. In the 'base scenario', N-accumulation appeared in the country as a whole, apart from certain small areas in the northern part. Whole-tree harvesting led to net losses in extensive areas located mainly in northern and central Sweden. In most parts of the country, whole-tree harvesting combined with decreased deposition was found to result in net losses. Main conclusions The intensity of the forestry has a strong impact on the N-budget. Conventional forestry in combination with the present deposition level results in a high net accumulation of N in the south-western parts of Sweden and accordingly, in a risk of unwanted environmental effects such as increased N-leaching. With whole-tree harvesting, the N-balance is negative in parts of Sweden, mainly in the northern and central parts. N-fertilization may become necessary there if the present level of forest production is to be maintained. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/138752
- author
- Akselsson, Cecilia LU and Westling, Olle
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Global Ecology and Biogeography Letters
- volume
- 14
- issue
- 1
- pages
- 85 - 95
- publisher
- Wiley-Blackwell
- external identifiers
-
- wos:000226395400008
- scopus:12444282734
- ISSN
- 0960-7447
- DOI
- 10.1111/j.1466-822X.2004.00137.x
- language
- English
- LU publication?
- yes
- id
- 94c0b776-64ba-449f-a920-64382df4f92e (old id 138752)
- date added to LUP
- 2016-04-01 15:32:42
- date last changed
- 2023-09-04 03:20:24
@article{94c0b776-64ba-449f-a920-64382df4f92e,
abstract = {{Aim The aim of this work was to estimate on a regional scale the effects of nitrogen (N) deposition and harvest intensity on N-budgets in forest soils as a basis for strategies of emission reduction and sustainable forest management methods. Location The calculations were applied to Sweden, a country with a managed forest area of 23 x 10(6) ha. Methods Mass balance calculations, including N-deposition, N-fixation, N-loss through harvest, and N-leaching, were performed on a GIS platform using 5 x 5 km grids. Modelled deposition data together with spatial data obtained from the National Forest Inventory served as the basis for the calculations. Four different scenarios were run: a 'base scenario' involving present deposition and conventional forestry (stem harvest only); a 'whole-tree harvesting scenario' with present deposition and the harvesting of stems, branches and needles; a 'decreased deposition scenario'; and a 'whole-tree harvesting and decreased deposition scenario'. Results There was a sharp N-accumulation gradient with an increase in accumulation in the direction of the south-western part of Sweden. In the 'base scenario', N-accumulation appeared in the country as a whole, apart from certain small areas in the northern part. Whole-tree harvesting led to net losses in extensive areas located mainly in northern and central Sweden. In most parts of the country, whole-tree harvesting combined with decreased deposition was found to result in net losses. Main conclusions The intensity of the forestry has a strong impact on the N-budget. Conventional forestry in combination with the present deposition level results in a high net accumulation of N in the south-western parts of Sweden and accordingly, in a risk of unwanted environmental effects such as increased N-leaching. With whole-tree harvesting, the N-balance is negative in parts of Sweden, mainly in the northern and central parts. N-fertilization may become necessary there if the present level of forest production is to be maintained.}},
author = {{Akselsson, Cecilia and Westling, Olle}},
issn = {{0960-7447}},
language = {{eng}},
number = {{1}},
pages = {{85--95}},
publisher = {{Wiley-Blackwell}},
series = {{Global Ecology and Biogeography Letters}},
title = {{Regionalized nitrogen budgets in forest soils for different deposition and forestry scenarios in Sweden}},
url = {{http://dx.doi.org/10.1111/j.1466-822X.2004.00137.x}},
doi = {{10.1111/j.1466-822X.2004.00137.x}},
volume = {{14}},
year = {{2005}},
}