Reduced European emissions of S and N - Effects on air concentrations, deposition and soil water chemistry in Swedish forests

被引：68

作者：

Karlsson, Gunilla Pihl ^{[1
]}

Akselsson, Cecilia ^{[2
]}

Hellsten, Sofie ^{[1
]}

Karlsson, Per Erik ^{[1
]}

机构：

[1] IVL Swedish Environm Res Inst, SE-40014 Gothenburg, Sweden

[2] Lund Univ, Dept Earth & Ecosyst Sci, SE-22362 Lund, Sweden

来源：

ENVIRONMENTAL POLLUTION | 2011年 / 159卷 / 12期

关键词：

Acidification; Nitrogen leaching; Recovery; Forest; Swedish Throughfall Monitoring Network (SWETHRO); NITROGEN; ACIDIFICATION; RECOVERY; SULFUR; NORWAY; SWEDEN; TRENDS; SITES; LAKES;

D O I：

10.1016/j.envpol.2011.08.007

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Changes in sulphur and nitrogen pollution in Swedish forests have been assessed in relation to European emission reductions, based on measurements in the Swedish Throughfall Monitoring Network. Measurements were analysed over 20 years with a focus on the 12-year period 1996 to 2008. Air concentrations of SO2 and NO2, have decreased. The SO4-deposition has decreased in parallel with the European emission reductions. Soil water SO4-concentrations have decreased at most sites but the pH, ANC and inorganic Al-concentrations indicated acidification recovery only at some of the sites. No changes in the bulk deposition of inorganic nitrogen could be demonstrated. Elevated NO3-concentrations in the soil water occurred at irregular occasions at some southern sites. Despite considerable air pollution emission reductions in Europe, acidification recovery in Swedish forests soils is slow. Nitrogen deposition to Swedish forests continues at elevated levels that may lead to leaching of nitrate to surface waters. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：3571 / 3582

页数：12

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