{"type": "FeatureCollection", "features": [{"id": "10.1023/a:1010310300067", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:17:25Z", "type": "Journal Article", "created": "2002-12-23", "description": "Planted tree or shrub fallows can help increase the fertility of degraded tropical soils. We investigated the effects of planted fallows of Indigofera (IND), Calliandra (CAL), and Tithonia (TTH); a natural, unmanaged fallow (NAT); and a maize/bean rotation (ROT) on the dynamics and partitioning of soil organic matter (SOM) and phosphorus (P). One year after treatment, samples were collected from a fine-textured volcanic-ash soil (Oxic Dystropept) of a mid-altitude hillside in southwestern Colombia. The SOM in the sand-size fraction (150\u20132000 \u03bcm) was subdivided into light (LL), intermediate (LM), and heavy (LH) fractions. Total soil P was also fractionated into inorganic (Pi) and organic (Po). Of the planted fallows, TTH most increased and NAT least increased plant-available Pi and Po. The amounts of C, N, and P in the LL and LM fractions of SOM followed the order, TTH>CAL>NAT>ROT>IND and CAL>TTH>IND>NAT>ROT, respectively. Total amounts of N, P, K, Ca, and Mg in the soil were significantly (P < 0.05) highest under TTH and lowest under NAT. The fallow and ROT systems did not affect the C/N, C/P, and N/P ratios in the soil but significantly did so in the LL and LM fractions of SOM. Significant correlations indicated that the P content in the LL and LM fractions of SOM may help determine the amounts of NaHCO3-extractable Pi and Po, which may therefore serve as sensitive indicators of `readily available' and `readily mineralizable' soil P pools, respectively, in the volcanic-ash soils of the Andes.", "keywords": ["2. Zero hunger", "rotaci\u00f3n de cultivos", "soil chemicophysical properties", "soil fertility", "materia org\u00e1nica del suelo", "calliandra calothyrsus", "04 agricultural and veterinary sciences", "rotational cropping", "fertilidad del suelo", "15. Life on land", "fallow systems", "indigofera constricta", "sistemas con barbecho", "soil organic matter", "tithonia diversifolia", "propiedades f\u00edsico - qu\u00edmicas suelo", "0401 agriculture", " forestry", " and fisheries", "phosphorus"]}, "links": [{"href": "https://doi.org/10.1023/a:1010310300067"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1023/a:1010310300067", "name": "item", "description": "10.1023/a:1010310300067", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1023/a:1010310300067"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2001-04-01T00:00:00Z"}}, {"id": "10.1111/j.1365-2486.2007.01415.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:18:46Z", "type": "Journal Article", "created": "2007-08-18", "title": "Microbial Soil Respiration And Its Dependency On Carbon Inputs, Soil Temperature And Moisture", "description": "Abstract<p>This 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.</p>", "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": "10261/369333", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:24:34Z", "type": "Report", "title": "Efectos de la aplicaci\u00f3n de compost vegetal y biochar de alperujo en la calidad del suelo, fisiolog\u00eda vegetal y din\u00e1mica del carbono en un olivar superintensivo", "description": "Open AccessUno de los mayores desaf\u00edos de la agricultura actual es garantizar el suministro de alimentos para una poblaci\u00f3n en crecimiento, mientras m\u00e1s del 40% de los suelos cultivables est\u00e1n degradados, aumentando la dependencia de la fertilizaci\u00f3n mineral. El reciclaje y la valorizaci\u00f3n de residuos agr\u00edcolas, como sustratos o enmiendas del suelo, se propone como una alternativa para recuperar la calidad del suelo y gestionar los residuos agr\u00edcolas. En la \u00faltima d\u00e9cada, el biochar, un producto s\u00f3lido rico en carbono org\u00e1nico derivado de la pir\u00f3lisis de biomasa, ha ganado atenci\u00f3n como enmienda para mejorar las propiedades del suelo, y almacenar carbono. Este ensayo compara el impacto del biochar de alperujo y el compost vegetal en las propiedades del suelo, la productividad del cultivo, la fisiolog\u00eda del olivo y las tasas de respiraci\u00f3n del suelo en una plantaci\u00f3n super-intensiva de arbequina bajo riego deficitario (30% demanda h\u00eddrica). Se aplicaron dosis equivalentes a 40 t/ha de biochar, compost y una mezcla de ambos (50% p/p), junto con parcelas no enmendadas (control), totalizando 96 parcelas de 1 m\u00b2 (24 por tratamiento). El biochar aument\u00f3 significativamente la capacidad de retenci\u00f3n de agua del suelo, redujo la compactaci\u00f3n y mejor\u00f3 el potencial h\u00eddrico de las plantas. Mejor\u00f3 la tasa de fotos\u00edntesis neta de los olivos en per\u00edodos pre-cosecha, la eficiencia del uso del agua y la tasa de transporte electr\u00f3nico en los \u00e1rboles, incrementando un 15% el rendimiento en peso del fruto. Sin embargo, el rendimiento neto de aceite por \u00e1rbol fue similar debido al mayor contenido de humedad en las aceitunas. En relaci\u00f3n a la din\u00e1mica del carbono, el biochar increment\u00f3 el contenido de carbono org\u00e1nico del suelo, principalmente carbono recalcitrante. Las tasas de respiraci\u00f3n del suelo aumentaron con la temperatura, siendo m\u00e1s elevadas en suelos tratados con compost durante el primer a\u00f1o, tendencia que no se observ\u00f3 en la mezcla de compost y biochar.", "keywords": ["Reciclado", "Enmiendas org\u00e1nicas", "Econom\u00eda circular", "Secuestro de carbono", "Materia org\u00e1nica del suelo", "Valorizaci\u00f3n"], "contacts": [{"organization": "Rosa Arranz, Jos\u00e9 M. de la, P\u00e9rez-Dal\u00ed, Sara, S\u00e1nchez-Mart\u00edn, \u00c1gueda M., M\u00e1rquez-Moreno, J., Campos D\u00edaz de Mayorga, Paloma, Miller, A. Z., Guti\u00e9rrez Patricio, S., Cubero, Beatriz, San Emeterio, Layla M., Osman, Jorge R., Jim\u00e9nez Morillo, N. T., Moreno Ortega, Jes\u00fas A., Gonz\u00e1lez-P\u00e9rez, Jos\u00e9 Antonio,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10261/369333"}, {"rel": "self", "type": "application/geo+json", "title": "10261/369333", "name": "item", "description": "10261/369333", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10261/369333"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-01-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Materia+org%C3%A1nica+del+suelo&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=Materia+org%C3%A1nica+del+suelo&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=Materia+org%C3%A1nica+del+suelo&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Materia+org%C3%A1nica+del+suelo&offset=3", "hreflang": "en-US"}], "numberMatched": 3, "numberReturned": 3, "distributedFeatures": [], "timeStamp": "2026-05-26T13:18:36.040808Z"}