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
Changes in soil heterotrophic respiration, carbon availability, and microbial function in seven forests along a climate gradient
TL;DR: In this article, the relationship between soil C dynamics and microbial substrate utilization at large scales was investigated using biochemical measurements, static chamber-gas chromatography analysis, and Biolog-Eco microplates, respectively.
Carbon Sequestration in Restored Soils by Applying Organic Amendments
TL;DR: Agarwal et al. as discussed by the authors presented a collection of 7 figura, 2 tablas, and 63 referencias from the work of the author of this article, including:
Influence of cropping system management and crop residue addition on soil carbon turnover through the microbial biomass
TL;DR: The fate and turnover of microbial carbon (C) in an arable soil following crop residue addition likely depends on the quality of both native soil organic matter (SOM) and residues as discussed by the authors.
Emissions of CO2 and N2O from a pasture soil from Madagascar—Simulating conversion to direct‐seeding mulch‐based cropping in incubations with organic and inorganic inputs
Michel Rabenarivo,Nicole Wrage‐Moennig,Jean-Luc Chotte,Lilia Rabeharisoa,Tantely Razafimbelo,Lydie Chapuis-Lardy +5 more
TL;DR: In the highlands of Madagascar, agricultural expansion gained on grasslands and cropping systems based on direct seeding with permanent vegetation cover are emerging as a means to sustain upland crop production.
References
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M. J. Swift,O. W. Heal,J. M. Anderson +2 more
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TL;DR: In this paper, the authors build a conceptual model of the priming effect based on the contradictory results available in the literature adopting the concept of nutritional competition, and they postulate that priming results from the competition for energy and nutrient acquisition between the microorganisms specialized in the decomposition of fresh organic matter and those feeding on polymerised SOM.
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M.R. Carter,B. A. Stewart +1 more
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TL;DR: In this article, the authors present an analysis of Soil organic matter storage in Agroecosystems. But their focus is on the storage of organic matter in Soil Fraction and Aggregates.
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