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
Ungulates decelerate litter decomposition by altering litter quality above and below ground
TL;DR: It was shown that litter decomposition was significantly faster for both leaves and roots in a deer exclosure than in a control site with deer herbivory, and synergetic influences could allow deer herbivation to reduce overall plant decomposition rates aboveground and belowground via changes in plant species composition.
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Effect of high soil C/N ratio and nitrogen limitation caused by the long-term combined organic-inorganic fertilization on the soil microbial community structure and its dominated SOC decomposition
Lloyd Axworthy,Oliver Cromwell +1 more
TL;DR: In this article , the effects of the long-term combined organic-inorganic fertilization on microbial community were investigated by conducting a 30-year-long field test, and the results indicated that the mean natural logarithm of the soil C:N:P acquisition enzyme ratio was 1.04:1.
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The role of the physical properties of soil in determining biogeochemical responses to soil warming
Fernanda Santos,Rebecca Abney,Rebecca Abney,M. E. Barnes,N. A. Bogie,Teamrat A. Ghezzehei,Lixia Jin,Kimber Moreland,Benjamin N. Sulman,Benjamin N. Sulman,Asmeret Asefaw Berhe +10 more
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TL;DR: In this paper, the relationship between atmospheric and soil temperatures, synthesize current knowledge of the physical basis of soil temperature changes and responses to anticipated warming, and review current knowledge on how warming impacts the physical and biogeochemical processes in soil.
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TL;DR: In this paper, the long-term capacity of tropical pastures to sequester carbon (C) in different soil layers after deforestation has been investigated in French Guiana, showing that the C stored in the deep soil layers contributes significantly to C stocks down to a depth of 100 cm and that C is sequestered in recalcitrant soil organic matter in the soil below 20 cm.
A disconnect between O horizon and mineral soil carbon - implications for soil C sequestration.
TL;DR: In this paper, the effect of manipulations of aboveground carbon input on soil carbon storage was tested in a temperate, deciduous forest in east Tennessee, USA, and the results showed that short-term litter exclusion or addition had no effect on carbon stock in the mineral soil, measured to a depth of 30 cm, or the partitioning of carbon in the soil between particulate- and mineral-associated organic matter.
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