The effect of simulated acid rain on the nutrient status of subarctic woodland soils in eastern Canada
Treatment of small plots in a spruce–lichen woodland near Schefferville over two summers with simulated acid rain at pH 3, 4, and 5.5 and comparison with plots exposed to natural rainfall revealed increased leaching of nutrient cations, especially Mg 2+ , but only with the pH 3 treatment. Most chang...
Published in: | Canadian Journal of Forest Research |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1987
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/x87-064 http://www.nrcresearchpress.com/doi/pdf/10.1139/x87-064 |
id |
crcansciencepubl:10.1139/x87-064 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/x87-064 2023-12-17T10:50:46+01:00 The effect of simulated acid rain on the nutrient status of subarctic woodland soils in eastern Canada Moore, T. R. 1987 http://dx.doi.org/10.1139/x87-064 http://www.nrcresearchpress.com/doi/pdf/10.1139/x87-064 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Forest Research volume 17, issue 5, page 370-378 ISSN 0045-5067 1208-6037 Ecology Forestry Global and Planetary Change journal-article 1987 crcansciencepubl https://doi.org/10.1139/x87-064 2023-11-19T13:39:12Z Treatment of small plots in a spruce–lichen woodland near Schefferville over two summers with simulated acid rain at pH 3, 4, and 5.5 and comparison with plots exposed to natural rainfall revealed increased leaching of nutrient cations, especially Mg 2+ , but only with the pH 3 treatment. Most changes in composition occurred as the solutions passed through the lichen mat with its associated litter and vascular plants. Experiments with laboratory soil columns showed that the subsoil horizons neutralize much of the acidity of the pH 3 treatments, presumably because of sulphate-fixation in the Fe-rich horizons. Based on measurements of field litter decomposition and laboratory carbon dioxide flux, the simulated acid treatments have little effect on organic matter decomposition. The treatments did not affect cation leaching from burnt plant tissues, but in the most acid treatment a larger proportion of the released nutrient cations were lost from the soil column. Laboratory experiments did not detect significant changes in mineralization rates, but there were increased leaching losses of NH 4 + -N with the pH 3 treatment. Because of the acid nature of the soils (soil pH 4.0), there appear to be few significant changes in soil nutrient status associated with acid rain, but this conclusion must be interpreted with caution because of the relatively short duration of the experiments and the harsh climatic and edaphic environment in which subarctic plants grow. Article in Journal/Newspaper Subarctic Canadian Science Publishing (via Crossref) Canada Canadian Journal of Forest Research 17 5 370 378 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Ecology Forestry Global and Planetary Change |
spellingShingle |
Ecology Forestry Global and Planetary Change Moore, T. R. The effect of simulated acid rain on the nutrient status of subarctic woodland soils in eastern Canada |
topic_facet |
Ecology Forestry Global and Planetary Change |
description |
Treatment of small plots in a spruce–lichen woodland near Schefferville over two summers with simulated acid rain at pH 3, 4, and 5.5 and comparison with plots exposed to natural rainfall revealed increased leaching of nutrient cations, especially Mg 2+ , but only with the pH 3 treatment. Most changes in composition occurred as the solutions passed through the lichen mat with its associated litter and vascular plants. Experiments with laboratory soil columns showed that the subsoil horizons neutralize much of the acidity of the pH 3 treatments, presumably because of sulphate-fixation in the Fe-rich horizons. Based on measurements of field litter decomposition and laboratory carbon dioxide flux, the simulated acid treatments have little effect on organic matter decomposition. The treatments did not affect cation leaching from burnt plant tissues, but in the most acid treatment a larger proportion of the released nutrient cations were lost from the soil column. Laboratory experiments did not detect significant changes in mineralization rates, but there were increased leaching losses of NH 4 + -N with the pH 3 treatment. Because of the acid nature of the soils (soil pH 4.0), there appear to be few significant changes in soil nutrient status associated with acid rain, but this conclusion must be interpreted with caution because of the relatively short duration of the experiments and the harsh climatic and edaphic environment in which subarctic plants grow. |
format |
Article in Journal/Newspaper |
author |
Moore, T. R. |
author_facet |
Moore, T. R. |
author_sort |
Moore, T. R. |
title |
The effect of simulated acid rain on the nutrient status of subarctic woodland soils in eastern Canada |
title_short |
The effect of simulated acid rain on the nutrient status of subarctic woodland soils in eastern Canada |
title_full |
The effect of simulated acid rain on the nutrient status of subarctic woodland soils in eastern Canada |
title_fullStr |
The effect of simulated acid rain on the nutrient status of subarctic woodland soils in eastern Canada |
title_full_unstemmed |
The effect of simulated acid rain on the nutrient status of subarctic woodland soils in eastern Canada |
title_sort |
effect of simulated acid rain on the nutrient status of subarctic woodland soils in eastern canada |
publisher |
Canadian Science Publishing |
publishDate |
1987 |
url |
http://dx.doi.org/10.1139/x87-064 http://www.nrcresearchpress.com/doi/pdf/10.1139/x87-064 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
Canadian Journal of Forest Research volume 17, issue 5, page 370-378 ISSN 0045-5067 1208-6037 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/x87-064 |
container_title |
Canadian Journal of Forest Research |
container_volume |
17 |
container_issue |
5 |
container_start_page |
370 |
op_container_end_page |
378 |
_version_ |
1785575822528086016 |