Cycling downwards - dissolved organic matter in soils

被引：558

作者：

Kaiser, Klaus ^{[2
]}

Kalbitz, Karsten ^{[1
]}

机构：

[1] Univ Amsterdam, IBED, NL-1098 XH Amsterdam, Netherlands

[2] Univ Halle Wittenberg, D-06120 Halle, Saale, Germany

来源：

SOIL BIOLOGY & BIOCHEMISTRY | 2012年 / 52卷

关键词：

Adsorption; Conceptual model; Co-precipitation; Dissolved organic matter; Microbial processing; Soil organic matter; CARBON; FOREST; DYNAMICS; LITTER; DOC; MINERALIZATION; ECOSYSTEMS; CHEMISTRY; SORPTION; FLUX;

D O I：

10.1016/j.soilbio.2012.04.002

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Dissolved organic matter has been recognized as mobile, thus crucial to translocation of metals, pollutants but also of nutrients in soil. We present a conceptual model of the vertical movement of dissolved organic matter with soil water, which deviates from the view of a chromatographic stripping along the flow path. It assumes temporal immobilization (sorptive or by co-precipitation), followed by microbial processing, and re-release (by desorption or dissolution) into soil water of altered compounds. The proposed scheme explains well depth trends in age and composition of dissolved organic matter as well as of solid-phase organic matter in soil. It resolves the paradox of soil organic matter being oldest in the youngest part of the soil profile - the deep mineral subsoil. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：29 / 32

页数：4

共 25 条

[1] Rapid turnover of DOC in temperate forests accounts for increased CO2 production at elevated temperatures [J].

Bengtson, Per ;

Bengtsson, Goeran .

ECOLOGY LETTERS, 2007, 10 (09) :783-790

[2] Low dissolved organic carbon input from fresh litter to deep mineral soils [J].

Froberg, M. ;

Jardine, P. M. ;

Hanson, P. J. ;

Swanston, C. W. ;

Todd, D. E. ;

Tarver, J. R. ;

Garten, C. T., Jr. .

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 2007, 71 (02) :347-354

[3] Flux of carbon from 14C-enriched leaf litter throughout a forest soil mesocosm [J].

Froberg, Mats ;

Hanson, Paul J. ;

Trumbore, Susan E. ;

Swanston, Christopher W. ;

Todd, Donald E. .

GEODERMA, 2009, 149 (3-4) :181-188

[4] Dissolved organic matter in soil: challenging the paradigm of sorptive preservation [J].

Guggenberger, G ;

Kaiser, K .

GEODERMA, 2003, 113 (3-4) :293-310

[5] COMPOSITION AND DYNAMICS OF DISSOLVED CARBOHYDRATES AND LIGNIN-DEGRADATION PRODUCTS IN 2 CONIFEROUS FORESTS, NE BAVARIA, GERMANY [J].

GUGGENBERGER, G ;

ZECH, W .

SOIL BIOLOGY & BIOCHEMISTRY, 1994, 26 (01) :19-27

[6] Nitrogen addition alters mineralization dynamics of 13C-depleted leaf and twig litter and reduces leaching of older DOC from mineral soil [J].

Hagedorn, Frank ;

Kammer, Adrian ;

Schmidt, Michael W. I. ;

Goodale, Christine L. .

GLOBAL CHANGE BIOLOGY, 2012, 18 (04) :1412-1427

[7] Terrestrial inputs of organic matter to coastal ecosystems: An intercomparison of chemical characteristics and bioavailability [J].

Hopkinson, CS ;

Buffam, I ;

Hobbie, J ;

Vallino, J ;

Perdue, M ;

Eversmeyer, B ;

Prahl, F ;

Covert, J ;

Hodson, R ;

Moran, MA ;

Smith, E ;

Baross, J ;

Crump, B ;

Findlay, S ;

Foreman, K .

BIOGEOCHEMISTRY, 1998, 43 (03) :211-234

[8]

John F Mccarthy, 2005, Journal of Geographical Sciences, V15, P149

[9] The role of DOM sorption to mineral surfaces in the preservation of organic matter in soils [J].

Kaiser, K ;

Guggenberger, G .

ORGANIC GEOCHEMISTRY, 2000, 31 (7-8) :711-725

[10] Changes in dissolved lignin-derived phenols, neutral sugars, uronic acids, and amino sugars with depth in forested Haplic Arenosols and Rendzic Leptosols [J].

Kaiser, K ;

Guggenberger, G ;

Haumaier, L .

BIOGEOCHEMISTRY, 2004, 70 (01) :135-151

← 1 2 3 →