Black carbon (BC) is an important pool of the global C cycle, because it cycles much more slowly than others and may even be managed for C sequestration. Using stable isotope techniques, we investigated the fate of BC applied to a savanna Oxisol in Colombia at rates of 0, 11.6, 23.2 and 116.1\uffe2\uff80\uff83t\uffe2\uff80\uff83BC\uffe2\uff80\uff83ha\uffe2\uff88\uff921, as well as its effect on non\uffe2\uff80\uff90BC soil organic C. During the rainy seasons of 2005 and 2006, soil respiration was measured using soda lime traps, particulate and dissolved organic C (POC and DOC) moving by saturated flow was sampled continuously at 0.15 and 0.3\uffe2\uff80\uff83m, and soil was sampled to 2.0\uffe2\uff80\uff83m. Black C was found below the application depth of 0\uffe2\uff80\uff930.1\uffe2\uff80\uff83m in the 0.15\uffe2\uff80\uff930.3\uffe2\uff80\uff83m depth interval, with migration rates of 52.4\uffc2\uffb114.5, 51.8\uffc2\uffb118.5 and 378.7\uffc2\uffb1196.9\uffe2\uff80\uff83kg\uffe2\uff80\uff83C\uffe2\uff80\uff83ha\uffe2\uff88\uff921\uffe2\uff80\uff83yr\uffe2\uff88\uff921 (\uffc2\uffb1SE) where 11.6, 23.2 and 116.1\uffe2\uff80\uff83t\uffe2\uff80\uff83BC\uffe2\uff80\uff83ha\uffe2\uff88\uff921, respectively, had been applied. Over 2 years after application, 2.2% of BC applied at 23.2\uffe2\uff80\uff83t\uffe2\uff80\uff83BC\uffe2\uff80\uff83ha\uffe2\uff88\uff921 was lost by respiration, and an even smaller fraction of 1% was mobilized by percolating water. Carbon from BC moved to a greater extent as DOC than POC. The largest flux of BC from the field (20\uffe2\uff80\uff9353% of applied BC) was not accounted for by our measurements and is assumed to have occurred by surface runoff during intense rain events. Black C caused a 189% increase in aboveground biomass production measured 5 months after application (2.4\uffe2\uff80\uff934.5\uffe2\uff80\uff83t additional dry biomass\uffe2\uff80\uff83ha\uffe2\uff88\uff921 where BC was applied), and this resulted in greater amounts of non\uffe2\uff80\uff90BC being respired, leached and found in soil for the duration of the experiment. These increases can be quantitatively explained by estimates of greater belowground net primary productivity with BC addition.
", "keywords": ["2. Zero hunger", "leaching", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "ecology", "15. Life on land", "soil respiration", "respiraci\u00f3n del suelo", "01 natural sciences", "lixiviacion", "6. Clean water", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1111/j.1365-2486.2009.02044.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1365-2486.2009.02044.x", "name": "item", "description": "10.1111/j.1365-2486.2009.02044.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2486.2009.02044.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-02-22T00:00:00Z"}}, {"id": "10.1111/j.1365-2486.2007.01415.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:18:34Z", "type": "Journal Article", "created": "2007-08-18", "title": "Microbial Soil Respiration And Its Dependency On Carbon Inputs, Soil Temperature And Moisture", "description": "AbstractThis experiment was designed to study three determinant factors in decomposition patterns of soil organic matter (SOM): temperature, water and carbon (C) inputs. The study combined field measurements with soil lab incubations and ends with a modelling framework based on the results obtained. Soil respiration was periodically measured at an oak savanna woodland and a ponderosa pine plantation. Intact soils cores were collected at both ecosystems, including soils with most labile C burnt off, soils with some labile C gone and soils with fresh inputs of labile C. Two treatments, dry\uffe2\uff80\uff90field condition and field capacity, were applied to an incubation that lasted 111 days. Short\uffe2\uff80\uff90term temperature changes were applied to the soils periodically to quantify temperature responses. This was done to prevent confounding results associated with different pools of C that would result by exposing treatments chronically to different temperature regimes. This paper discusses the role of the above\uffe2\uff80\uff90defined environmental factors on the variability of soil C dynamics. At the seasonal scale, temperature and water were, respectively, the main limiting factors controlling soil CO2 efflux for the ponderosa pine and the oak savanna ecosystems. Spatial and seasonal variations in plant activity (root respiration and exudates production) exerted a strong influence over the seasonal and spatial variation of soil metabolic activity. Mean residence times of bulk SOM were significantly lower at the Nitrogen (N)\uffe2\uff80\uff90rich deciduous savanna than at the N\uffe2\uff80\uff90limited evergreen dominated pine ecosystem. At shorter time scales (daily), SOM decomposition was controlled primarily by temperature during wet periods and by the combined effect of water and temperature during dry periods. Secondary control was provided by the presence/absence of plant derived C inputs (exudation). Further analyses of SOM decomposition suggest that factors such as changes in the decomposer community, stress\uffe2\uff80\uff90induced changes in the metabolic activity of decomposers or SOM stabilization patterns remain unresolved, but should also be considered in future SOM decomposition studies. Observations and confounding factors associated with SOM decomposition patterns and its temperature sensitivity are summarized in the modeling framework.
", "keywords": ["2. Zero hunger", "Soil organic matter", "Climate change", "Cambio clim\u00e1tico", "0401 agriculture", " forestry", " and fisheries", "Soil respiration", "04 agricultural and veterinary sciences", "15. Life on land", "Materia org\u00e1nica del suelo", "Respiraci\u00f3n del suelo"]}, "links": [{"href": "https://doi.org/10.1111/j.1365-2486.2007.01415.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1365-2486.2007.01415.x", "name": "item", "description": "10.1111/j.1365-2486.2007.01415.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2486.2007.01415.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-07-21T00:00:00Z"}}, {"id": "10.5424/fs/20112003-11458", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:23:02Z", "type": "Journal Article", "created": "2011-12-21", "description": "Mixed stands with nitrogen fixing secondary species can improve the vigour and the stand environment of the targeted species. The aim of this study was to better understand the effect of the consociation of a N-fixing species (black locust) with a broadleaf quality timber production (wild cherry). The study was conducted in 11 year old plantations located in the Northeast of Portugal. The treatments considered were: pure black locust, pure wild cherry and mixture of wild cherry and black locust. Each plot had six lines with 12 trees and a buffer strip line. The samplings were collected on the plantation line within a radius of 50 to 100 cm from the tree. In each plot we measured soil N mineralization dynamic, soil microbial biomass carbon (MBC) and nitrogen (MBN), microbial quotient (MBC/Corg), metabolic quotient (qCO2), microbial respiration and dehydrogenase activity. Results showed a positive impact of the black locust species on the supply of nitrogen to the soil. The net N-mineralization rates were, at the end of this study, about three times greater in the pure black locust than in the pure wild cherry and about two times greater in the mixture than in the pure wild cherry. MBC and cumulative soil respiration were higher in the mixture than in the pure cherry plantation soil which may reflect positive changes in the soil environment.
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