Use of a gradient of N-deposition to calculate effect-related soil and vegetation measures in deciduous forests
(2003) In Forest Ecology and Management 180(1-3). p.113-124- Abstract
- Deposition of N and S has increased since the 1950s in most European countries and N accumulates in ecosystems that are not N saturated. This study shows long-term effects of a (modelled) N deposition of 7-17 kg N ha(-1) per year on biological and chemical processes in soil, vegetation composition, and functional types of field-layer plant species in deciduous forests. Soil pH largely determined the response of the soil processes, emphasising the importance to compare soils of similar acidity regarding the effects of N deposition. The most pronounced effects were demonstrated for the most acid study plots. When we compared regions with a deposition of 7 and 17 kg N ha(-1) per year we found a 40-80% higher soil N mineralisation rate, 2-90%... (More)
- Deposition of N and S has increased since the 1950s in most European countries and N accumulates in ecosystems that are not N saturated. This study shows long-term effects of a (modelled) N deposition of 7-17 kg N ha(-1) per year on biological and chemical processes in soil, vegetation composition, and functional types of field-layer plant species in deciduous forests. Soil pH largely determined the response of the soil processes, emphasising the importance to compare soils of similar acidity regarding the effects of N deposition. The most pronounced effects were demonstrated for the most acid study plots. When we compared regions with a deposition of 7 and 17 kg N ha(-1) per year we found a 40-80% higher soil N mineralisation rate, 2-90% higher nitrification rate and 10-25% lower C:N ratio in the region with the highest deposition. Similar but smaller differences were indicated when regions with a deposition of 7 and 10 kg N ha(-1) per year were compared. Number of species was lower in the regions with the highest deposition. Literature data for plants on N concentration, nitrate reductase activity (NRA), growth rates, morphology and height were calculated on a site basis. They varied to different extent between the regions. The N concentration was 7-24% higher in the regions with the highest N deposition. We argue that the effect-related critical load based on our results should be set to a N deposition of 7-10 kg N ha(-1) per year. Critical loads for a subdivision of deciduous forests would give lower critical loads for the most acid soils compared to less acid soil. (Less)
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https://lup.lub.lu.se/record/137637
- author
- Falkengren-Grerup, Ursula LU and Diekmann, M
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Forest Ecology and Management
- volume
- 180
- issue
- 1-3
- pages
- 113 - 124
- publisher
- Elsevier
- external identifiers
-
- wos:000184311800010
- scopus:0037931470
- ISSN
- 1872-7042
- DOI
- 10.1016/S0378-1127(02)00605-9
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Plant Ecology and Systematics (Closed 2011) (011004000)
- id
- 39b016c7-298c-4476-a64a-171a5db5593f (old id 137637)
- date added to LUP
- 2016-04-01 16:45:18
- date last changed
- 2022-01-28 21:55:51
@article{39b016c7-298c-4476-a64a-171a5db5593f,
abstract = {{Deposition of N and S has increased since the 1950s in most European countries and N accumulates in ecosystems that are not N saturated. This study shows long-term effects of a (modelled) N deposition of 7-17 kg N ha(-1) per year on biological and chemical processes in soil, vegetation composition, and functional types of field-layer plant species in deciduous forests. Soil pH largely determined the response of the soil processes, emphasising the importance to compare soils of similar acidity regarding the effects of N deposition. The most pronounced effects were demonstrated for the most acid study plots. When we compared regions with a deposition of 7 and 17 kg N ha(-1) per year we found a 40-80% higher soil N mineralisation rate, 2-90% higher nitrification rate and 10-25% lower C:N ratio in the region with the highest deposition. Similar but smaller differences were indicated when regions with a deposition of 7 and 10 kg N ha(-1) per year were compared. Number of species was lower in the regions with the highest deposition. Literature data for plants on N concentration, nitrate reductase activity (NRA), growth rates, morphology and height were calculated on a site basis. They varied to different extent between the regions. The N concentration was 7-24% higher in the regions with the highest N deposition. We argue that the effect-related critical load based on our results should be set to a N deposition of 7-10 kg N ha(-1) per year. Critical loads for a subdivision of deciduous forests would give lower critical loads for the most acid soils compared to less acid soil.}},
author = {{Falkengren-Grerup, Ursula and Diekmann, M}},
issn = {{1872-7042}},
language = {{eng}},
number = {{1-3}},
pages = {{113--124}},
publisher = {{Elsevier}},
series = {{Forest Ecology and Management}},
title = {{Use of a gradient of N-deposition to calculate effect-related soil and vegetation measures in deciduous forests}},
url = {{http://dx.doi.org/10.1016/S0378-1127(02)00605-9}},
doi = {{10.1016/S0378-1127(02)00605-9}},
volume = {{180}},
year = {{2003}},
}