{"type": "FeatureCollection", "features": [{"id": "10.1007/s004420100656", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:15:07Z", "type": "Journal Article", "created": "2003-02-13", "title": "Fine-Root Biomass And Fluxes Of Soil Carbon In Young Stands Of Paper Birch And Trembling Aspen As Affected By Elevated Atmospheric Co2 And Tropospheric O3", "description": "Rising atmospheric CO2 may stimulate future forest productivity, possibly increasing carbon storage in terrestrial ecosystems, but how tropospheric ozone will modify this response is unknown. Because of the importance of fine roots to the belowground C cycle, we monitored fine-root biomass and associated C fluxes in regenerating stands of trembling aspen, and mixed stands of trembling aspen and paper birch at FACTS-II, the Aspen FACE project in Rhinelander, Wisconsin. Free-air CO2 enrichment (FACE) was used to elevate concentrations of CO2 (average enrichment concentration 535\u00a0\u00b5l l-1) and O3 (53\u00a0nl l-1) in developing forest stands in 1998 and 1999. Soil respiration, soil pCO2, and dissolved organic carbon in soil solution (DOC) were monitored biweekly. Soil respiration was measured with a portable infrared gas analyzer. Soil pCO2 and DOC samples were collected from soil gas wells and tension lysimeters, respectively, at depths of 15, 30, and 125\u00a0cm. Fine-root biomass averaged 263\u00a0g m-2 in control plots and increased 96% under elevated CO2. The increased root biomass was accompanied by a 39% increase in soil respiration and a 27% increase in soil pCO2. Both soil respiration and pCO2 exhibited a strong seasonal signal, which was positively correlated with soil temperature. DOC concentrations in soil solution averaged ~12\u00a0mg l-1 in surface horizons, declined with depth, and were little affected by the treatments. A simplified belowground C budget for the site indicated that native soil organic matter still dominated the system, and that soil respiration was by far the largest flux. Ozone decreased the above responses to elevated CO2, but effects were rarely statistically significant. We conclude that regenerating stands of northern hardwoods have the potential for substantially greater C input to soil due to greater fine-root production under elevated CO2. Greater fine-root biomass will be accompanied by greater soil C efflux as soil respiration, but leaching losses of C will probably be unaffected.", "keywords": ["0106 biological sciences", "Ecology and Evolutionary Biology", "Aspen-FACE-project", "root-", "USA-", "pollutants-", "Environmental-Sciences)", "tropospheric-ozone", "forest-productivity", "01 natural sciences", "biomass-", "northern-forests", "124-38-9: CARBON DIOXIDE", "soil-carbon-flux", "terrestrial-ecosystems", "populus-tremuloides", "Cellular and Developmental Biology", "soil-carbon", "7440-44-0: CARBON", "carbon-", "fine-root", "Bioenergetics- (Biochemistry-and-Molecular-Biophysics)", "Natural Resources and Environment", "04 agricultural and veterinary sciences", "GLOBAL-ECOLOGY", "North-America", "Nearctic-region)", "Rhinelander- (Wisconsin-", "carbon-sequestration", "atmosphere-", "biomass-production", "dissolved-organic-carbon [DOC-]", "Science", "respiration-", "carbon-dioxide-enrichment", "forest-plantations", "carbon-dioxide", "carbon-storage", "fine-root-biomass", "belowground-biomass", "United-States-Wisconsin-Rhinelander", "carbon-cycle", "Health Sciences", "ozone-", "soil-respiration", "air-pollution", "global-change", "atmospheric-carbon-dioxide", "biomass", "Molecular", "15. 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Climate action", "roots-", "Legacy", "Terrestrial-Ecology (Ecology-", "free-air-carbon-dioxide-enrichment [FREE-]: experimental-method", "0401 agriculture", " forestry", " and fisheries", "Northern Forests Global Change Carbon Sequestration Soil Respiration Dissolved Organic Carbon Soil PCO2"]}, "links": [{"href": "https://doi.org/10.1007/s004420100656"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Oecologia", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s004420100656", "name": "item", "description": "10.1007/s004420100656", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s004420100656"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2001-07-01T00:00:00Z"}}, {"id": "434d353af2e8ebc0ab34b1573dd0ca85", "type": "Feature", "geometry": null, "properties": {"updated": "2025-09-04T07:23:35.264513Z", "type": "Dataset", "language": "en", "title": "Estimated soil carbon inputs and modeling results for Swedish arable land under rotation in areas approved for environmental compensation", "description": "This data set results from researching the effects of removing crop residues and cultivating intermediate crops (IC) on long-term soil organic carbon (SOC) in Swedish arable land areas approved for environmental compensation. Thus, it contains data considering five different scenarios: S1, a base scenario with no residue removal nor IC cultivation; S2, an alternative scenario with IC cultivation; S3, an alternative scenario where crop residues are harvested for biogas production with the return of digestate as soil amendment; S4, an alternative scenario with IC cultivation and harvest of crop residues for biogas production; and S5, an alternative scenario with IC cultivation and where both crop residues and IC biomass are harvested for biogas production.  Estimations of SOC inputs are based on estimated biomass availability for each yield survey district (SKO) from the previously published dataset (Barrios Latorre, S. A. (2024), information collected from the statistics database of the Swedish Board of Agriculture (Jordburksverket), and Statistics Sweden (SCB, 2023). It considered all the Swedish SKOs where removing residues and cultivating intermediate crops is technically possible. The geospatial data containing the boundaries of the SKOs can be requested from Jordbruksverket or accessed directly from the previous dataset (https://doi.org/10.5878/t9ey-ac36).  Estimations of SOC inputs are differentiated by source: aboveground biomass (AGB), belowground biomass (BGB), and organic amendments (OA). Furthermore, the total SOC at steady state (Css) for each scenario was estimated using the Introductory Carbon Balance Model (ICBM) (Menichetti et al., 2024).  The file contains 85 rows (SKOs) and 34 columns.  References Barrios Latorre, S. A. (2024). Biomass availability from the harvest of crop residues and oilseed radish as an intermediate crop at yield survey district level in Sweden (Version 1) [Data set]. Swedish University of Agricultural Sciences. Available at: https://doi.org/10.5878/t9ey-ac36 Menichetti, L., K\u00e4tterer, T., & Bolinder, M. A. (2024). Bayesian calibration of the ICBM/3 soil organic carbon model constrained by data from long-term experiments and uncertainties of C inputs. Carbon Management, 15(1), 2304749. https://doi.org/10.1080/17583004.2024.2304749 SCB. (2023). G\u00f6dselmedel i jordbruket 2021/22. Mineral- och stallg\u00f6dsel till olika gr\u00f6dor samt hantering och lagring av stallg\u00f6dsel (MI 30 SM 2302; Milj\u00f6v\u00e5rd).", "keywords": ["bioeconomy", "bioekonomi", "biogas", "biomass", "biomass-production", "catch-cropping", "land-use", "mark", "markanva\u0308ndning", "se", "soil", "soil-carbon", "soil-carbon-storage", "soil-fertility", "soil-organic-carbon", "soil-organic-matter", "sustainable-agriculture"], "contacts": [{"organization": "Sergio Alejandro Barrios Latorre", "roles": ["creator"]}, {"organization": "http://dataportal.se/organisation/SE2021002817", "roles": ["publisher"]}]}, "links": [{"href": "http://data.europa.eu/88u/dataset/https-doi-org-10-5878-rsvb-cb29"}, {"href": "https://doi.org/10.5878/rsvb-cb29"}, {"href": "https-doi-org-10-5878-rsvb-cb29"}, {"rel": "self", "type": "application/geo+json", "title": "434d353af2e8ebc0ab34b1573dd0ca85", "name": "item", "description": "434d353af2e8ebc0ab34b1573dd0ca85", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/434d353af2e8ebc0ab34b1573dd0ca85"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"null": "date"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=carbon-storage&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=carbon-storage&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=carbon-storage&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=carbon-storage&offset=2", "hreflang": "en-US"}], "numberMatched": 2, "numberReturned": 2, "distributedFeatures": [], "timeStamp": "2026-06-24T14:11:02.461549Z"}