Journal Article10.1111/J.1461-0248.2004.00579.X
Carbon input to soil may decrease soil carbon content
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TL;DR: In this article, a negative relationship between primary production and soil carbon (C) content is found, and the authors conclude that energy available to soil microbes and microbial competition are important determinants of soil C decomposition.
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Abstract: It is commonly predicted that the intensity of primary production and soil carbon (C) content are positively linked. Paradoxically, many long-term field observations show that although plant litter is incorporated to soil in large quantities, soil C content does not necessarily increase. These results suggest that a negative relationship between C input and soil C conservation exists. Here, we demonstrate in controlled conditions that the supply of fresh C may accelerate the decomposition of soil C and induce a negative C balance. We show that soil C losses increase when soil microbes are nutrient limited. Results highlight the need for a better understanding of microbial mechanisms involved in the complex relationship between C input and soil C sequestration. We conclude that energy available to soil microbes and microbial competition are important determinants of soil C decomposition.
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Citations
Soil microbial diversity: Methodological strategy, spatial overview and functional interest.
TL;DR: This review describes past, present and ongoing conceptual and methodological strategies employed to better assess and understand the distribution and evolution of soil microbial diversity with the aim of increasing the capacity to translate such diversity into soil biological functioning and, more widely, into ecosystem services.
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Nitrogen and phosphorus supply controls soil organic carbon mineralization in tropical topsoil and subsoil
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Functional response of soil microbial communities to tillage, cover crops and nitrogen fertilization
Elodie Nivelle,Julien Verzeaux,Hazzar Habbib,Yakov Kuzyakov,Yakov Kuzyakov,Guillaume Decocq,David Roger,Jérôme Lacoux,Jérôme Duclercq,Fabien Spicher,Jose-Edmundo Nava-Saucedo,Manuella Catterou,Frédéric Dubois,Thierry Tétu +13 more
TL;DR: In this article, a 5-year field experiment was conducted in Northern France using a combination of three factors: i) no-till (NT) vs. conventional tillage (CT); ii) with or without winter cover crops (bare fallow; cover crops with a low prevalence of legumes; cover crop with a high prevalence of legsumes); and iii) without N fertilization.
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Priming effect and microbial diversity in ecosystem functioning and response to global change: a modeling approach using the SYMPHONY model.
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TL;DR: Building plant/soil models to explore how PE and microbial diversity influence soil/plant interactions and ecosystem C and nitrogen dynamics in response to global change suggests that the PE and functional role of microbial diversity may be incorporated in ecosystem models with a few additional parameters, improving accuracy of predictions.
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Looking deeper: An investigation of soil carbon losses following harvesting from a managed northeastern red spruce (Picea rubens Sarg.) forest chronosequence
TL;DR: In this paper, age-related variations in carbon storage and dynamics in the organic layer and 6 depth strata in the top 50 cm of the mineral soil during ecologically important stages of post-harvest succession in a first rotation red spruce forest chronosequence that includes one of the largest old growth reference stands in northeastern North America.
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