Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2024
Authors
Astrid Solvåg Nesse Agnieszka Jasinska Ketil Stoknes Stine Göransson Aanrud Kristin Meland Risinggård Roland Kallenborn Trine Aulstad Sogn Tomasgaard Aasim Musa Mohamed AliAbstract
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Authors
Abirami Ramu Ganesan Kannan Mohan Sabariswaran Kandasamy Ramya Preethi Surendran Ragavendhar Kumar Durairaj Karthick Rajan Jayakumar RajarajeswaranAbstract
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Authors
Marit Skuterud VennatrøAbstract
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Authors
Sunil Mundra Dinesh Sanka Loganathachetti Håvard Kauserud Anna Maria Fiore-Donno Tonje Økland Jørn-Frode Nordbakken O. Janne KjønaasAbstract
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Authors
Marian Malte Weigel Therese With Berge Jukka Salonen Timo Lötjönen Bärbel Gerowitt Lars Olav BrandsæterAbstract
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Authors
Aline Roma Tomaz Ademir de Oliveira Ferreira Rattan Lal Telmo Jorge Carneiro Amado Belchior Oliveira Trigueiro da Silva William Ramos da Silva Felipe José Cury Fracetto Thiago Inagaki Maria Betânia Galvão Santos Freire Elves Obede dos Santos NunesAbstract
Land-use change has driven soil carbon stock losses in ecosystems worldwide. Implementing agricultural crops and exploiting forest resources trigger the breakdown of soil aggregates, thus exposing organic matter to microbial decomposition and enhancing carbon dioxide emissions, especially in biomes more susceptible to climate extremes as in the tropical semiarid regions. This study was based on the hypothesis that the undisturbed soil from the dry forest (Caatinga biome under natural revegetation in Brazilian semiarid) would have an improvement in the mass of macroaggregates and recover more than 50% of the soil C stock within 10 years. Thus, a field experiment was conducted to investigate soils from the Caatinga biome under native vegetation, “cowpea cropping” for over 30 years, and soil under natural revegetation for over 10 years, after conventional soil cultivation of maize and cowpea, to determine soil and soil-aggregates carbon stocks and to estimate the recovery rate of these stocks. The proportional mass of aggregates of different sizes and the total stock of particulate organic carbon (POC) were also quantified. The results showed that soil under preserved native vegetation of dry forest Caatinga biome had higher total soil C stock (50.9 Mg ha−1) than that under cowpea cropping (23.2 Mg ha−1) and natural revegetation (45.1 Mg ha−1). The proportional mass of large macroaggregates was higher in soil under native vegetation for all depths. However, soil under cowpea cropping had lower C stocks in macroaggregates, and recovered roughly 63% of the original C stocks, while revegetation recovered 78% of the stock in 10 years. Although the conventional management system for cowpea monoculture aggravated losses in soil carbon stock by more than 50% of the original C stocks, dry forest under natural revegetation recovered 79% of this stock and almost 100% of POC stock in 10 years (~12 Mg ha−1). Furthermore, soil under undisturbed Caatinga dry forest achieved C stock levels equivalent to that of the global average range for semiarid tropical environments. The high recovery rate of C stock in forest soil under natural revegetation indicates the resilience potential of organisms responsible for structural protection of aggregates and the encapsulated soil organic matter content.