Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2025
Forfattere
Thiago InagakiSammendrag
This presentation examines how organo-mineral associations (OMAs) are affected by climate differences, and how they contribute to carbon persistence and enhance soil quality across different regions. The talk will combine results obtained from micro- to field-scale studies in natural and agricultural environments, showing relationship between OMAs, microorganisms, and soil structure.
Forfattere
Teresa Gómez de la Bárcena Tatiana Francischinelli Rittl Eva Farkas Daniel Rasse Christophe Moni Cédric Plessis Loiuse Malot Helge Meissner Trond Henriksen Randi Berland FrøsethSammendrag
Background and aims Cover crops are an important measure for carbon (C) sequestration in agriculture. However, little is known about the potential of cover crops to increase C under Nordic conditions and the efficiency of this measure over time. Here, we quantify the potential contribution of different cover crops to soil organic carbon (SOC) and organic matter fractions, and study how this is affected by the origin of the C input (aboveground or belowground residues). Methods We conducted a 13 CO 2 pulse-labelling experiment during the growing season of four cover crops adapted to Nordic conditions, representing different plant functional types. The assimilated 13 C was traced in soil during the following two years. We investigated the fate of cover crop C in two organic matter fractions, Particulate Organic Matter (POM) and Mineral-Associated Organic Matter (MAOM), known to have different persistence in soil. Results Carbon derived from aboveground residues decayed two to three times faster as compared to belowground C. Belowground C inputs were similar among cover crops despite their contrasting root traits and differences in root biomass C. Rhizodeposited-C was consistently the largest belowground C input. Cover crop species affected the quantity of POM-C and MAOM-C, but MAOM-C was preferentially formed from belowground C (ranging from 0.63 ± 0.2 to 0.25 ± 0.1 Mg MAOM-C ha −1 across different cover crops), regardless of the species. Conclusions Cover crop species that can combine large belowground biomass production with root traits that promote physical and physico-chemical protection of OM will contribute most effectively to the long-term SOC pool. These aspects need to be balanced with considerations related to agricultural management.
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Hans‐Peter Schmidt Samuel Abiven Annette Cowie Bruno Glaser Stephen Joseph Claudia Kammann Johannes Lehmann Jens Leifeld Genxing Pan Daniel Rasse Cornelia Rumpel Dominic Woolf Andrew R. Zimmerman Nikolas HagemannSammendrag
1. The application of biochar to soil is a highly durable nature‐based carbon dioxide removal (CDR) pathway. It provides certifiable climate‐change mitigation, with mean carbon residence times exceeding 1,000 years, and additional co‐benefits for soil health and fertility. 2. Biochar persistence in soil depends on both intrinsic material properties and environmental factors. Its longevity is determined not only by the polyaromatic structure of the biochar itself but also by soil mineralogy, biological activity, and climatic conditions. 3. Biochar aging involves both decomposition and stabilization processes. The complementary mechanisms of decomposition and stabilization include interactions of biochar with minerals and native organic matter, as well as aggregations with soil particles that maintain its long‐term persistence. 4. Biochars and inertinite‐ranked fossil coals cannot be equated. Inertinite has been protected from biotic and abiotic oxidation for millions of years through burial in sediments and inclusion in minerals under high pressure and temperature. Biochar produced today in modern pyrolysis facilities is a fundamentally different material. 5. No carbonaceous material is completely inert. Field and laboratory studies consistently show measurable, though small, mineralization across a wide range of biochar types. Declaring that soil‐applied biochar carbon persists at 100% over millennia is inconsistent with current scientific understanding. 6. Analytical proxies indicate relative, but not absolute, biochar persistence. 7. Policy definitions of biochar CDR should reflect climate‐relevant timescales. The degree of persistence should be estimated on the order of centuries rather than millennia, supported by registered material properties, traceable application data, conservative modeling, and continued long‐term field experiments for model validation.
Forfattere
Gerard Cornelissen Nathalie Briels Thomas D. Bucheli Nicolas Estoppey Andrea Gredelj Nikolas Hagemann Sylvain Lerch Simon Lotz Daniel Rasse Hans-Peter Schmidt Erlend Grenager Sørmo Hans Peter Heinrich ArpSammendrag
Det er ikke registrert sammendrag
Sammendrag
Vi beskriver tilnærmingen hvordan man kan bruke dendrometer målinger pluss klimavariabler til å modellere transpirasjon i Hurdal skogen
Sammendrag
An update on the carbon gains and losses at Hurdal
Sammendrag
Yasso07 simuleringer av jordkarbon i Hurdal
Forfattere
Junbin Zhao Holger Lange Christian Wilhelm Mohr Cornelya Klutsch Simon Weldon Jonathan Rizzi Gunnhild Søgaard Hanna Marika Silvennoinen Teresa Gómez de la BárcenaSammendrag
Jordrespirasjonsmålinger på Svanhovd og dens modellering
Forfattere
João Carlos de Moraes Sá Rattan Lal Klaus Lorenz Yadunath Bajgai Carla Gavilan Ademir De Oliveira Ferreira Clever Briedis Thiago Inagaki Daniel Ruiz Potma Gonçalves JeanKleber BortoluzziSammendrag
No-till systems (NTS) predicated on the tenets of conservation agriculture principles are a viable agricultural paradigm to achieve net zero or net negative emissions. We assessed the carbon dioxide equivalent (CO₂e) emissions based on soil organic carbon (SOC) stock changes in 1-m depth by plow-based tillage (PBT) and the mitigation potential through a no-till system (NTS) across 26 sites in the Cerrado biome and 37 sites in the Atlantic Forest biome. These sites comprise 86,411 ha (ha), encompassing four climate zones in Brazil. The investigation revealed a range of CO2e emissions, with the lowest recorded value of 74.2 Mg CO2e ha−1 observed in the tropical equatorial climate zone and the highest recorded value of 470.1 Mg CO2e ha−1 detected in the subtropical humid climate zone. The total CO2e emissions in the tropical equatorial, tropical central, subtropical humid and subtropical temperate climate zones were calculated to be 5.51, 3.88, 3.21, and 4.20 Tg CO2e, respectively, with a cumulative value of 16.80 Tg CO2e with 6.7 % of uncertainty (i.e., 1.12 Tg CO2e). Adoption of NTS demonstrated a high capacity for offsetting CO2 emissions, achieving 5.40 Tg CO2e in the tropical equatorial zone (recovering 98 % of the total emissions), 2.57 Tg CO2e in the tropical central zone (68.7 %), 2.67 Tg CO2e in the subtropical humid zone (83.2 %), and 2.88 Tg CO2e in the subtropical temperate zone (68.6 %). The percentage of net zero and net negative emissions contributed by the SOC stock for 1-m depth was 73.63 % and 26.37 %, respectively, and it played a pivotal role in integrating agriculture as a part of the climate solution.