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
Winter cover crops increase readily decomposable soil carbon, but compost drives total soil carbon during eight years of intensive, organic vegetable production in California.
TL;DR: It is suggested that frequent winter cover cropping has a greater potential than compost to increase nutrient availability and vegetable yields in high-input, tillage intensive vegetable systems.
65
Factors regulating carbon mineralization in the surface and subsurface soils of Pyrenean mountain grasslands
Jordi Garcia-Pausas,Pere Casals,Lluís Camarero,Carme Huguet,Roy Thompson,Maria-Teresa Sebastià,Joan Romanyà +6 more
TL;DR: In this paper, the authors assessed the factors that regulate C mineralization in mountain grassland soils under standard laboratory conditions to compare regulation mechanisms at surface and subsurface horizons.
64
Phosphorus fertilisation under nitrogen limitation can deplete soil carbon stocks: evidence from Swedish meta-replicated long-term field experiments
TL;DR: In this paper, the authors investigated the effect on organic carbon stocks of three different levels of phosphorus and potassium (PK) fertilisation rates in the absence of nitrogen fertilisation and in the presence of PK fertiliser, and concluded that SOC dynamics are mainly output-driven in the PK-fertilised regime but mostly input-driven due to the much more pronounced response of NPP to N than to PK fertilisation.
Nutrient amendment does not increase mineralisation of sequestered carbon during incubation of a nitrogen-limited mangrove soil
Joost A. Keuskamp,Heike Schmitt,Hendrikus J. Laanbroek,Jos T. A. Verhoeven,Mariet M. Hefting +4 more
TL;DR: In this paper, the effects of nutrient loading on microbial growth rates and the mineralisation of soil organic carbon (SOC) in two mangrove soils contrasting in carbon content were quantified.
Intensive fertilization (N, P, K, Ca, and S) decreases organic matter decomposition in paddy soil
Yuhuai Liu,Yuhuai Liu,Huadong Zang,Tida Ge,Jing Bai,Jing Bai,Shunbao Lu,Ping Zhou,Peiqing Peng,Olga Shibistova,Olga Shibistova,Zhenke Zhu,Jinshui Wu,Georg Guggenberger +13 more
TL;DR: In this paper, the authors investigated soil organic matter (SOM) decomposition in a 60-day incubation in response to N, P, K, Ca, and S addition to nutrient-limited paddy soil at three low and three high concentrations.
61
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