Controls on the Dynamics of Dissolved Organic Matter in Soils: A Review

Kalbitz, Karsten; Solinger, Stephan; Park, Ji‐Hyung; Michalzik, Beate; Matzner, Egbert

doi:10.1097/00010694-200004000-00001

Cited by 2,036 publications

(1,649 citation statements)

References 196 publications

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“…The percentage of the available organic carbon effectively doubled to 3.7% for soil A with a lower enhancement to 3.3% for soil B. There is considerable debate concerning the effect of ionic strength on the mobilisation of DOC from soils (Kalbitz et al, 2000) but evidence exists that chemical interactions with Na ions facilitate the release of DOC (Skyllberg and Magnussen, 1995) compared to Ca ions which enhance its precipitation (Romkens and Dolfing, 1998). These phenomena are supported by the results reported here.…”

Section: Dissolved Organic Carbon Contentsupporting

confidence: 83%

Soil mobility of surface applied polyaromatic hydrocarbons in response to simulated rainfall

Revitt

Balogh

Jones

2013

Environ Sci Pollut Res

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Polyaromatic hydrocarbons (PAHs) are emitted from a variety of sources and can accumulate on and within surface soil layers. To investigate the level of potential risk posed by surface contaminated soils, vertical soil column experiments were conducted to assess the mobility, when leached with simulated rainwater, of six selected PAHs (naphthalene, phenanthrene, fluoranthene, pyrene, benzo(e)pyrene and benzo(ghi)perylene) with contrasting hydrophobic characteristics and molecular weights/sizes. The only PAH found in the leachate within the experimental period of 26 days was naphthalene. The lack of migration of the other applied PAHs were consistent with their low mobilities within the soil columns which generally parallelled their log K oc values. Thus only 2.3% of fluoranthene, 1.8% of pyrene, 0.2% of benzo(e)pyrene and 0.4% of benzo(ghi)perylene were translocated below the surface layer. The PAH distributions in the soil columns followed decreasing power relationships with 90% reductions in the starting levels being shown to occur within a maximum average depth of 0.94 cm compared to an average starting depth of 0.5 cm. A simple predictive model identifies the extensive time periods, in excess of 10 years, required to mobilise 50% of the benzo(e)pyrene and benzo(ghi)perylene from the surface soil layer. Although this reduces to between 2 and 7 years for fluoranthene and pyrene, it is concluded that the possibility of surface applied PAHs reaching and contaminating a groundwater aquifer is unlikely.

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Section: Dissolved Organic Carbon Contentsupporting

confidence: 83%

Soil mobility of surface applied polyaromatic hydrocarbons in response to simulated rainfall

Revitt

Balogh

Jones

2013

Environ Sci Pollut Res

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“…Beside fluid temperature, substrate availability is important for stimulating dormant microorganisms. The availability of organic matter thereby depends on physical and chemical parameters, and particularly a rise in temperature increases the availability of organic matter (Kalbitz et al 2000;Burdige 2007;Hubert et al 2010). Thus, the temperature increase due to heat storage in the aquifer probably enabled organic matter mobilization in the warm side of the aquifer and supported the growth of fermentative bacteria downstream of the heat exchanger.…”

Section: Discussionmentioning

confidence: 99%

Thermal effects on microbial composition and microbiologically induced corrosion and mineral precipitation affecting operation of a geothermal plant in a deep saline aquifer

et al. 2013

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The microbial diversity of a deep saline aquifer used for geothermal heat storage in the North German Basin was investigated. Genetic fingerprinting analyses revealed distinct microbial communities in fluids produced from the cold and warm side of the aquifer. Direct cell counting and quantification of 16S rRNA genes and dissimilatory sulfite reductase (dsrA) genes by real-time PCR proved different population sizes in fluids, showing higher abundance of bacteria and sulfate reducing bacteria (SRB) in cold fluids compared with warm fluids. The operation-dependent temperature increase at the warm well probably enhanced organic matter availability, favoring the growth of fermentative bacteria and SRB in the topside facility after the reduction of fluid temperature. In the cold well, SRB predominated and probably accounted for corrosion damage to the submersible well pump, and iron sulfide precipitates in the near wellbore area and topside facility filters. This corresponded to lower sulfate content in fluids produced from the cold well as well as higher content of hydrogen gas that was probably released from corrosion, and maybe favored growth of hydrogenotrophic SRB. This study reflects the high influence of microbial populations for geothermal plant operation, because microbiologically induced precipitative and corrosive processes adversely affect plant reliability.2

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“…In order to correct this value, the dissolution rate was reduced, and a value close to the 14 lower limit of the range found in the literature was used (Table 2). Indeed, other works (Chantigny, 2003; 15 Kalbitz et al, 2000;Zsolnay, 1996) report values as high as 400 mgC l -1 for the average DOC concentration 16 in the upper part of forest soils (organic horizons and root zone), and therefore the model estimate could be 17 regarded as being acceptable. This mismatch however confirms the incomplete knowledge of the 18 mechanisms controlling DOM dynamics and the large uncertainties regarding the dissolution and turnover 19 parameters (Kalbitz et al, 2000;2003).…”

Section: Base Case Description 13mentioning

confidence: 96%

“…This finding has implications for the long-term soil nutrient balance because it suggests that the 12 increased plant productivity might deplete soil C stocks rather than contribute to CO 2 sequestration. Litter 13 input rates and their temporal patterns are modified following a change in soil use: As a consequence, the C 14 and N stocks, soil fertility and DOM dynamics are altered in manner that is difficult to predict (Batlle-15 Aguilar et al, 2011;Chantigny, 2003;Kalbitz et al, 2000). 16…”

Section: Introductionmentioning

confidence: 99%

Analysis of carbon and nitrogen dynamics in riparian soils: Model development

Brovelli¹,

Batlle-Aguilar²,

Barry³

2012

Science of The Total Environment

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1The quality of riparian soils and their ability to buffer contaminant releases to aquifers and streams are 2 connected intimately to moisture content and nutrient dynamics, in particular of carbon (C) and nitrogen (N). 3A multi-compartment model -named the Riparian Soil Model (RSM) -was developed to help investigate 4 the influence and importance of environmental parameters, climatic factors and management practices on 5 soil ecosystem functioning in riparian areas. The model improves existing tools, in particular regarding its 6 capability to simulate a wide range of temporal scales, from days to centuries, along with its ability to predict 7 the concentration and vertical distribution of dissolved organic matter (DOM). It was found that DOM 8 concentration controls the amount of soil organic matter (SOM) stored in the soil as well as the respiration 9 rate. The moisture content was computed using a detailed water budget approach, assuming that within each 10 time step all the water above field capacity drains to the layer underneath, until it becomes fully saturated. A 11 mass balance approach was also used for nutrient transport, whereas the biogeochemical reaction network 12 was developed as an extension of an existing C and N turnover model. Temperature changes across the soil 13 profile were simulated analytically, assuming periodic temperature changes in the topsoil. Sustainable management of riparian soils is of primary importance to preserve natural ecosystem 3 functioning. Riparian zones are sources of ecosystem functions and services including biodiversity hotspots, 4 water quality enhancement, and recreation sites (Brinson et al., 1981;Naiman and Decamps, 1997). 5Throughout the world, the ecological condition of natural riparian systems has declined due to a number of 6 factors, including streamflow regulation, floodplain development, channelization, and the spread of non-7 native species (Naiman and Decamps, 1997;Naiman et al., 2005). Consequently, restoration of riparian areas 8 has become a global management priority (Hughes et al., 2005;Hughes and Rood, 2003; Webb and Erskine, 9 2003). 10 Soil ecosystem functioning is connected intimately to soil organic matter (SOM) turnover, a set of complex 11 and intertwined biological processes that recycle biotic residues (such as plant litter, dead organisms, etc.) to 12 inorganic molecules. Environmental and climatic factors affect decomposition rates, the biological activity of 13 the soil and ultimately SOM cycling (Laio et al., 2001;Porporato et al., 2003). Soil moisture has a direct 14 influence on the processes mediated by the soil biota (pedofauna, bacteria, fungi, etc.) because optimal 15 decomposition rates are achieved only in a narrow saturation range (Bell et al., 2008; Ju et al., 2006; 16 Porporato et al., 2003;Van Gestel et al., 1992). Owing to the strong dependence of ecological processes on 17 soil moisture, linear and non-linear interactions and feedbacks exist between hydrological processes and soil 18 ecosystem functionin...

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Controls on the Dynamics of Dissolved Organic Matter in Soils: A Review

Cited by 2,036 publications

References 196 publications

Soil mobility of surface applied polyaromatic hydrocarbons in response to simulated rainfall

Soil mobility of surface applied polyaromatic hydrocarbons in response to simulated rainfall

Thermal effects on microbial composition and microbiologically induced corrosion and mineral precipitation affecting operation of a geothermal plant in a deep saline aquifer

Analysis of carbon and nitrogen dynamics in riparian soils: Model development

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