Increasing trends of total organic carbon concentrations in small forest lakes in Finland from 1987 to 2003

被引:147
作者
Vuorenmaa, Jussi [1 ]
Forsius, Martin [1 ]
Mannio, Jaakko [1 ]
机构
[1] Finnish Environm Inst, FIN-00251 Helsinki, Finland
基金
芬兰科学院;
关键词
organic carbon; DOC; TOC; lakes; acidification; runoff; climate;
D O I
10.1016/j.scitotenv.2006.02.038
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Trends in total organic carbon (TOC) concentrations over the period 1987-2003 were studied in 13 small forest lakes. Recovery from acidification (reduced SO4 deposition) and long-term changes in runoff as potential drivers for the trends were examined. The results showed that TOC concentrations have increased throughout Finland. Ten of the 13 lakes showed a significant increasing TOC trend (p < 0.05), and included both clear water and humic lakes. The largest annual increase in TOC occurred in lakes with the largest average concentrations. The magnitude of the TOC trends were not significantly related to the proportion of peat soils in the catchment but the catchment size was an important predictor. Decreasing SO4 deposition and improved acid-base status in soil due to the recovery from acidification implied an increased mobilisation of organic acids and TOC. There was little evidence that the long-term increasing trend in TOC concentrations was related to long-term changes in runoff. However, large seasonal and interannual fluctuations in runoff did appear to affect TOC concentrations for a number of years. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:47 / 65
页数:19
相关论文
共 58 条
[1]  
[Anonymous], 1990, ACIDIFICATION FINLAN
[2]   THE RELATIVE IMPORTANCE OF ACIDITY SOURCES FOR HUMIC LAKES IN NORWAY [J].
BRAKKE, DF ;
HENRIKSEN, A ;
NORTON, SA .
NATURE, 1987, 329 (6138) :432-434
[3]   Hydrologic control of dissolved organic matter in low-order Precambrian Shield Lakes [J].
Curtis, PJ ;
Schindler, DW .
BIOGEOCHEMISTRY, 1997, 36 (01) :125-138
[4]   Chemistry of dissolved organic carbon at Bear Brook Watershed, Maine:: Stream water response to (NH4)2SO4 additions [J].
David, M ;
Vance, G ;
Kahl, J .
ENVIRONMENTAL MONITORING AND ASSESSMENT, 1999, 55 (01) :149-163
[5]   DIVISION S-7 - FOREST AND RANGE SOILS - SOLUTION PARAMETERS INFLUENCING DISSOLVED ORGANIC-CARBON LEVELS IN 3 FOREST SOILS [J].
EVANS, A ;
ZELAZNY, LW ;
ZIPPER, CE .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1988, 52 (06) :1789-1792
[6]   Long-term increases in surface water dissolved organic carbon: Observations, possible causes and environmental impacts [J].
Evans, CD ;
Monteith, DT ;
Cooper, DM .
ENVIRONMENTAL POLLUTION, 2005, 137 (01) :55-71
[7]   WILL AN INCREASED GREENHOUSE IMPACT IN FENNOSCANDIA GIVE RISE TO MORE HUMIC AND COLORED LAKES [J].
FORSBERG, C .
HYDROBIOLOGIA, 1992, 229 :51-58
[8]   Recovery from acidification of Finnish lakes: regional patterns and relations to emission reduction policy [J].
Forsius, M ;
Vuorenmaa, J ;
Mannio, J ;
Syri, S .
SCIENCE OF THE TOTAL ENVIRONMENT, 2003, 310 (1-3) :121-132
[9]   Fluxes and trends of nitrogen and sulphur compounds at integrated monitoring sites in Europe [J].
Forsius, M ;
Kleemola, S ;
Vuorenmaa, J ;
Syri, S .
WATER AIR AND SOIL POLLUTION, 2001, 130 (1-4) :1641-1648
[10]   ION MASS BUDGETS FOR SMALL FORESTED CATCHMENTS IN FINLAND [J].
FORSIUS, M ;
KLEEMOLA, S ;
STARR, M ;
RUOHOAIROLA, T .
WATER AIR AND SOIL POLLUTION, 1995, 79 (1-4) :19-38