Multi-scale relationship between peatland vegetation type and dissolved organic carbon concentration

被引：44

作者：

Armstrong, A. ^{[1
]}

Holden, J. ^{[2
]}

Luxton, K. ^{[3
]}

Quinton, J. N. ^{[4
]}

机构：

[1] Univ Glasgow, Sch Geog & Earth Sci, Glasgow G12 8QQ, Lanark, Scotland

[2] Univ Leeds, Sch Geog, Leeds LS2 9JT, W Yorkshire, England

[3] United Util, Warrington WA5 3LP, Cheshire, England

[4] Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England

来源：

ECOLOGICAL ENGINEERING | 2012年 / 47卷

关键词：

Moorland; Vegetation; Plant functional type; Dissolved organic carbon; Peatland; Water quality; BLANKET PEAT; WATER-TABLE; TEMPERATURE SENSITIVITY; CUTOVER PEATLANDS; DRAIN-BLOCKING; CLIMATE-CHANGE; ELEVATED CO2; SOIL-WATER; DOC; RELEASE;

D O I：

10.1016/j.ecoleng.2012.06.027

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Dissolved organic carbon (DOC) is a key component of the carbon cycle and has significant impacts on aquatic ecosystems and potable water treatment. Upward trends in river and lacaustrine DOC concentrations have been observed and a number of key drivers have been proposed. Here, we present DOC concentration data from plot scale pore waters at one site and surface water from artificial drains sampled within a national survey which demonstrate a significant correlation between peatland vegetation type and DOC concentration. Calluna dominance was associated with the highest DOC concentration, Molinia and Sphagnum dominance with lower concentrations, and sedge dominance with intermediate concentrations. Water sampled from drains dominated by Calluna had greater DOC concentrations than water sampled from pore waters in plots dominated by Calluna. In contrast DOC concentrations from plots dominated by sedges were greater than those sampled from drains dominated by sedges. We discuss these findings in relation to plant functional traits and their influence on the physical and biotic conditions that regulate DOC concentrations. Given the known effects of management activities and climate change on peatland vegetation composition there is potential to manage plant community composition to ameliorate the observed rising DOC concentration. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：182 / 188

页数：7

共 74 条

[1]

Aerts R, 1999, ECOLOGY, V80, P2170, DOI 10.1890/0012-9658(1999)080[2170:PMCONC]2.0.CO

[2]

[3] The impact of peatland drain-blocking on dissolved organic carbon loss and discolouration of water; results from a national survey [J].

Armstrong, A. ;

Holden, J. ;

Kay, P. ;

Francis, B. ;

Foulger, M. ;

Gledhill, S. ;

McDonald, A. T. ;

Walker, A. .

JOURNAL OF HYDROLOGY, 2010, 381 (1-2) :112-120

[4] Functional microbial diversity in regenerating cutover peatlands responds to vegetation succession [J].

Artz, Rebekka R. E. ;

Chapman, Stephen J. ;

Siegenthaler, Andy ;

Mitchell, Edward A. D. ;

Buttler, Alexandre ;

Bortoluzzi, Estelle ;

Gilbert, Daniel ;

Yli-Petays, Mika ;

Vasander, Harri ;

Francez, Andre-Jean .

JOURNAL OF APPLIED ECOLOGY, 2008, 45 (06) :1799-1809

[5] Changes in fungal community composition in response to vegetational succession during the natural regeneration of cutover peatlands [J].

Artz, Rebekka R. E. ;

Anderson, Ian C. ;

Chapman, Stephen J. ;

Hagn, Alexandra ;

Schloter, Michael ;

Potts, Jacqueline M. ;

Campbell, Colin D. .

MICROBIAL ECOLOGY, 2007, 54 (03) :508-522

[6] Sphagnum regeneration on bare peat surfaces: Field and greenhouse experiments [J].

Campeau, S ;

Rochefort, L .

JOURNAL OF APPLIED ECOLOGY, 1996, 33 (03) :599-608

[7] Radiocarbon evidence for the importance of surface vegetation on fermentation and methanogenesis in contrasting types of boreal peatlands [J].

Chanton, J. P. ;

Glaser, P. H. ;

Chasar, L. S. ;

Burdige, D. J. ;

Hines, M. E. ;

Siegel, D. I. ;

Tremblay, L. B. ;

Cooper, W. T. .

GLOBAL BIOGEOCHEMICAL CYCLES, 2008, 22 (04)

[8]

Clark J., 2008, P 13 INT PEAT C TULL

[9] Increased temperature sensitivity of net DOC production from ombrotrophic peat due to water table draw-down [J].

Clark, J. M. ;

Ashley, D. ;

Wagner, M. ;

Chapman, P. J. ;

Lane, S. N. ;

Evans, C. D. ;

Heathwaite, A. L. .

GLOBAL CHANGE BIOLOGY, 2009, 15 (04) :794-807

[10] Link between DOC in near surface peat and stream water in an upland catchment [J].

Clark, Joanna M. ;

Lane, Stuart N. ;

Chapman, Pippa J. ;

Adamson, John K. .

SCIENCE OF THE TOTAL ENVIRONMENT, 2008, 404 (2-3) :308-315

← 1 2 3 4 5 6 7 8 →