{"type": "FeatureCollection", "features": [{"id": "10.1016/j.foreco.2012.07.045", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:15:45Z", "type": "Journal Article", "created": "2012-08-27", "title": "The Manipulation Of Organic Residues Affects Tree Growth And Heterotrophic Co2 Efflux In A Tropical Eucalyptus Plantation", "description": "Fast-growing plantations are increasingly being established on tropical soils, where fertility is largely supported by soil organic matter (SOM) and where different management options of harvest organic residues is thought to impact the long-term sustainability of these plantations. The objectives of this study were: (1) to quantify the effect of contrasting methods of organic residue management on tree growth and soil CO2 effluxes in the first 2 years after planting and (2) to evaluate the impact of organic residue manipulations on the mineralization of soil organic matter over the length of the experiment. Three treatments were setup in 0.125 ha plots and replicated in three blocks at the harvesting of a Congolese Eucalyptus stand, resulting in an aboveground organic residue mass ranging from 0 to 6.3 kg m \ufffd 2 . The mineralization of SOM was deduced in each treatment by partitioning sources of soil CO2 effluxes using decomposition experiments and by upscaling specific root respiration. Soil CO2 effluxes were greatly affected by seasons and organic residue manipulation, although there were no significant changes in topsoil water content and topsoil temperature over most of the study period. Aboveground organic residue was the first contributor to soil CO2 efflux in the two treatments with a litter layer. Organic residue management did not significantly influence the mineralization of SOM in our study, probably due to the low quality of Eucalyptus litter, or to the hypothetical lack of dissolved organic carbon transfers from litter to soil. A strong relationship was found between cumulative heterotrophic CO2 efflux and tree growth, supporting the hypothesis that the early growth of Eucalyptus trees in a sandy tropical soil is largely dependent on the nutrients released by the decomposition of organic residues.", "keywords": ["P33 - Chimie et physique du sol", "0106 biological sciences", "Tropical forest plantation", "[SDV]Life Sciences [q-bio]", "MATTER DYNAMICS", "F62 - Physiologie v\u00e9g\u00e9tale - Croissance et d\u00e9veloppement", "Eucalyptus growth", "01 natural sciences", "630", "Harvest organic residue", "NUTRIENT ACCUMULATION", "STAND-LEVEL", "SOIL CARBON BALANCE", "http://aims.fao.org/aos/agrovoc/c_33553", "ABOVEGROUND LITTER", "http://aims.fao.org/aos/agrovoc/c_16118", "http://aims.fao.org/aos/agrovoc/c_35657", "580", "BIOGEOCHEMICAL CYCLES", "2. Zero hunger", "Eucalyptus", "CLIMATE-CHANGE", "Soil organic matter mineralization", "r\u00e9sidu de r\u00e9colte", "http://aims.fao.org/aos/agrovoc/c_1811", "Soil respiration", "04 agricultural and veterinary sciences", "15. Life on land", "FOREST", "croissance", "K10 - Production foresti\u00e8re", "HARVEST RESIDUE", "[SDV] Life Sciences [q-bio]", "http://aims.fao.org/aos/agrovoc/c_3394", "LEAF-LITTER DECOMPOSITION", "respiration du sol", "0401 agriculture", " forestry", " and fisheries", "min\u00e9ralisation", "http://aims.fao.org/aos/agrovoc/c_15999", "mati\u00e8re organique du sol", "http://aims.fao.org/aos/agrovoc/c_2683"]}, "links": [{"href": "https://doi.org/10.1016/j.foreco.2012.07.045"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Forest%20Ecology%20and%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.foreco.2012.07.045", "name": "item", "description": "10.1016/j.foreco.2012.07.045", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.foreco.2012.07.045"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-08-01T00:00:00Z"}}, {"id": "10.1016/j.apsoil.2010.09.006", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:15:18Z", "type": "Journal Article", "created": "2010-10-15", "title": "Is There A Linear Relationship Between Priming Effect Intensity And The Amount Of Organic Matter Input?", "description": "C-labeling abstract Inputs of fresh organic matter (FOM) are known to affect the rate of soil organic matter (SOM) mineral- ization. SOM mineralization can be accelerated or decelerated by FOM inputs. This phenomenon, known as the Priming effect (PE), may largely influence the carbon (C) storage capacity of soils. However, the link between PE intensity and FOM inputs is not clearly understood. Indeed, almost all the studies about PE used only one FOM amount which is generally largely below the amount of FOM observed in field conditions. In our study, we incubated soil amended with three levels of 13 C-labeled straw as FOM and a control without FOM amendment for 80 days. The three levels used were in the same range as the natural FOM inputs observed on our sampling site. Various levels of mineral nitrogen were added within each level of straw supply so that the final input C:N ratios ranged among 44, 30 and 20. CO2 and i 13 C-CO2 were measured during the experiment allowing us to distinguish the FOM respired CO2 from the SOM respired CO2. We observed that PE intensity did not increase linearly with increasing FOM additions. Moreover, decreasing the input C:N ratios did not systematically affect PE intensity probably because of shifts in the microbial characteristics such as their C:N ratio or their assimilation yields. These results suggest that PE is a saturating function of FOM inputs that is only weakly influenced by initial N availability. Our results may be explained (i) by the existence of a limited SOM pool subject to PE (ii) or by the occurrence of two simultaneous and antagonistic mechanisms: an increase of the total active microbial biomass accel- erating SOM mineralization (i.e. a positive PE) and a preferential substrate utilization of FOM over SOM decreasing SOM mineralization (i.e. a negative PE). Finally, irrespective of the mechanisms implied, our results suggest that the importance of positive PE relatively to the amount of FOM may decrease when FOM inputs increase, which is favorable to carbon sequestration in soils. Indeed, in the case of the lower amount of FOM, the PE corresponded to 6.25% of the total amount of CO2 mineralized at the end of the experiment while, for the higher amount of FOM, the PE corresponded to 5% of the total amount of CO2 mineralized at the end of the experiment.", "keywords": ["DECOMPOSITION", "2. Zero hunger", "330", "[SDV]Life Sciences [q-bio]", "Soil organic matter mineralization", "Straw", "(13)C-labeling", "04 agricultural and veterinary sciences", "15. Life on land", "630", "6. Clean water", "MECHANISMS", "GLUCOSE", "CARBON", "SOIL", "NITROGEN", "MODEL", "[SDV] Life Sciences [q-bio]", "Carbon storage", "SUBSTRATE", "0401 agriculture", " forestry", " and fisheries", "Priming effect", "MINERALIZATION", "ROOTS"]}, "links": [{"href": "https://doi.org/10.1016/j.apsoil.2010.09.006"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Applied%20Soil%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.apsoil.2010.09.006", "name": "item", "description": "10.1016/j.apsoil.2010.09.006", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.apsoil.2010.09.006"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-11-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Soil+organic+matter+mineralization&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=Soil+organic+matter+mineralization&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=Soil+organic+matter+mineralization&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Soil+organic+matter+mineralization&offset=2", "hreflang": "en-US"}], "numberMatched": 2, "numberReturned": 2, "distributedFeatures": [], "timeStamp": "2026-09-22T03:01:35.612135Z"}