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
Carbon loss from northern circumpolar permafrost soils amplified by rhizosphere priming
Frida Keuper,Birgit Wild,Birgit Wild,Matti Kummu,Christian Beer,Gesche Blume-Werry,Gesche Blume-Werry,Sébastien Fontaine,Konstantin Gavazov,Konstantin Gavazov,Norman Gentsch,Georg Guggenberger,Georg Guggenberger,Gustaf Hugelius,Mika Jalava,Charles D. Koven,Eveline J. Krab,Eveline J. Krab,Peter Kuhry,Sylvain Monteux,Andreas Richter,Andreas Richter,Tanvir Shahzad,James T. Weedon,Ellen Dorrepaal +24 more
TL;DR: In this article, the authors combine high-resolution spatial and depth-resolved datasets of key plant and permafrost properties with empirical relationships of priming effects from living plants on microbial respiration.
Carbon mineralization is promoted by phosphorus and reduced by nitrogen addition in the organic horizon of northern hardwood forests
TL;DR: In this article, the authors tested whether nitrogen (N) or phosphorus (P) limit the mineralization of soil organic C (SOC) or that of added C sources in the Oe horizon of successional and mature northern hardwood forests in three locations in central New Hampshire, USA.
111
The soil priming effect: Consistent across ecosystems, elusive mechanisms
Xiao Jun Allen Liu,Xiao Jun Allen Liu,B. K. Finley,Rebecca L. Mau,Egbert Schwartz,Paul Dijkstra,Matthew A. Bowker,Bruce A. Hungate +7 more
TL;DR: In this paper, the authors conducted five-week incubations of four soils (grassland, pinon-juniper, ponderosa pine, mixed conifer) and found that the responses of priming to the amount and C-to-N ratio of the added substrate were consistent across ecosystems.
108
Functional gene differences in soil microbial communities from conventional, low-input and organic farmlands
Kai Xue,Liyou Wu,Ye Deng,Zhili He,Joy D. Van Nostrand,Philip G. Robertson,Thomas M. Schmidt,Jizhong Zhou +7 more
TL;DR: Canonical correlation analysis showed that selected soil variables could explain 69.5% of the variation of soil microbial community composition, indicating a close linkage between soil N availability or process and associated functional genes.
Inorganic Nutrients Increase Humification Efficiency and C-Sequestration in an Annually Cropped Soil
TL;DR: It is demonstrated that irrespective of the C-input, it is essential to balance the nutrient stoichiometry of added C to better match that of resistant SOM to increase SOC sequestration and the need to consider the hidden cost and availability of associated nutrients in building soil-C.
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