Journal Article10.1111/J.1461-0248.2004.00579.X
Carbon input to soil may decrease soil carbon content
803
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.
read more
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.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Effect of crop residue quality, nitrogen rate and CNPS stoichiometry on microbial respiration and C pools in a dispersive subsoil
Andrew T. Regan,John A. Kirkegaard,Alan E. Richardson,Brian R. Wilson,Chris N. Guppy +4 more
Effects of elevated CO2 and nitrogen addition on soil organic carbon fractions in a subtropical forest
TL;DR: In this article, the effects of elevated CO2 concentration and nitrogen addition on soil organic carbon fractions in subtropical forests where the ambient N deposition was high were investigated, and the results indicated that even in N-rich subtropically forest ecosystems, inputs of N are still needed in order to sustain soil C accumulation under elevated CO 2.
Qualitative and quantitative response of soil organic carbon to 40 years of crop residue incorporation under contrasting nitrogen fertilisation regimes
TL;DR: In this article, the authors investigated the effect of 40 years of crop residue incorporation combined with five different nitrogen (N) fertilisation levels on organic carbon stocks and five organic carbon fractions differing in turnover times on a clay loam soil in Padua, Italy.
Metagenomic analysis reveals a marked divergence in the structure of belowground microbial communities at elevated CO2
Zhili He,Meiying Xu,Ye Deng,Sanghoon Kang,Laurie E. Kellogg,Liyou Wu,Joy D. Van Nostrand,Sarah E. Hobbie,Peter B. Reich,Jizhong Zhou +9 more
TL;DR: It is shown that 10 years of field exposure of a grassland ecosystem to eCO2 dramatically altered the structure and functional potential of soil microbial communities and changes in microbial structure were significantly correlated with soil C and N contents and plant productivity.
Reduced vertical stratification of soil bacterial community structure and composition is associated with Bromus tectorum invasion of sagebrush steppe
TL;DR: It is demonstrated that the vertical stratification of soil bacterial community structure and composition is reduced in association with cheatgrass relative to that in associationwith sagebrush, which is significantly lower than in ST libraries.
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.
874