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
Interactions between soil and tree roots accelerate long‐term soil carbon decomposition
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TL;DR: Experimental evidence is provided for a rhizosphere priming effect, in which interactions between soil and tree roots substantially accelerate SOC decomposition in a 395-day greenhouse study with Ponderosa pine and Fremont cottonwood trees grown in three different soils.
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Effects of rice straw and nitrogen fertilization on greenhouse gas emissions and carbon storage in tropical flooded soil planted with rice
TL;DR: In this paper, the effects of four years of inorganic and organic nitrogen management on the emission of three major greenhouse gases (GHGs): methane (CH 4 ), carbon dioxide (CO 2 ) and nitrous oxide (N 2 O), and on soil carbon fractions such as water-soluble carbon (C, WSC), microbial biomass carbon (MBC), KMnO 4 oxidizable organic carbon (KMnO4 -C), carbon management index (CMI) and soil carbon storage were investigated in a flooded rice ( Oryza sativa L.) field in
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Soil carbon stocks in experimental mesocosms are dependent on the rate of labile carbon, nitrogen and phosphorus inputs to soils
TL;DR: In this paper, the authors investigated the response of soil carbon to carbon, nitrogen and phosphorus availability in different resource regimes and found that there is no net effect of labile carbon input rate on soil carbon stocks because reductions in carbon decomposition are offset by reductions in soil carbon formation.
Contribution of exudates, arbuscular mycorrhizal fungi and litter depositions to the rhizosphere priming effect induced by grassland species
Tanvir Shahzad,Claire Chenu,Patricia Genet,Sébastien Barot,Nazia Perveen,Christian Mougin,Sébastien Fontaine +6 more
TL;DR: It is shown that root exudation was the main way by which plants induced RPE followed by root litter, and the plants through their exudates seem to control the way the energy is used in order to maximize soil organic matter mineralization and drive their own nutrient supply.
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References
An extraction method for measuring soil microbial biomass c
TL;DR: In this paper, the effects of fumigation on organic C extractable by 0.5 m K2SO4 were examined in a contrasting range of soils and it was shown that both ATP and organic C rendered decomposable by CHCl3 came from the soil microbial biomass.
11.8K
•Book
Decomposition in Terrestrial Ecosystems
M. J. Swift,O. W. Heal,J. M. Anderson +2 more
- 01 Sep 1979
4.7K
The priming effect of organic matter: a question of microbial competition
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.
1.7K
•Book
Structure and Organic Matter Storage in Agricultural Soils
M.R. Carter,B. A. Stewart +1 more
- 23 Dec 1995
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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