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
Mineral fertilizer alters cellulolytic community structure and suppresses soil cellobiohydrolase activity in a long-term fertilization experiment
TL;DR: Analysis of soils receiving long-term applications of mineral fertilizer and manure-containing fertilizers suggests that enhanced C storage by mineral fertilizer addition occurs not only from extra organic carbon input, but may also be affected through the cellulose decomposing community in arable soil.
76
Soil organic matter decomposition driven by microbial growth: A simple model for a complex network of interactions
Cathy Neill,Jacques Gignoux +1 more
TL;DR: In this paper, the decomposition/growth process at the population level in two stages is modeled as a first order process with respect to the quantity of complex, and the second stage is an irreversible rate-limiting utilization of substrate per se.
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Replication Data for: Priming of soil organic matter: chemical structure of added compounds is more important than the energy content
D.P. Di Lonardo
- 17 Oct 2017
TL;DR: In this article, the authors report the following data: - CO2 evolution after addition of 13C labelled substrates (glucose, cellobiose and vanillic acid) to the soil.
75
Priming effect increases with depth in a boreal forest soil
Kristiina Karhu,Emmi Hilasvuori,Hannu Fritze,Christina Biasi,Hannu Nykänen,Jari Liski,Pekka Vanhala,Jussi Heinonsalo,Jukka Pumpanen +8 more
TL;DR: In this article, the authors measured PEs of free-living soil microbes in different layers of a boreal forest soil, and found that the relative magnitude of the PE increased with soil depth.
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The role of lignin and cellulose in the carbon-cycling of degraded soils under semiarid climate and their relation to microbial biomass.
TL;DR: In this paper, 13C-labeled cellulose and 13Clabeled lignin (75μg 13C g−1 soil) were added to two semiarid soils with different properties and degradation level, and the fate of added carbon was evaluated by analysis of the carbon isotope signature of bulk soil-derived carbon and extractable carbon fractions (water and sodium pyrophosphate extracts).
75
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