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
Does the addition of leaf litter affect soil respiration in the same way as addition of macrofauna excrements (of Bibio marci Diptera larvae) produced from the same litter
TL;DR: In this article, the authors measured changes in microbial respiration over a two-week period to ascertain the effects of added leaf litter and excrements produced from the same litter by larvae of St Mark's fly (B. marci).
Is priming effect a significant process for long-term SOC dynamics? Analysis of a 52-years old experiment.
TL;DR: In this article, the authors analyzed soil organic carbon (SOC) data from a 52-years old bare-fallow experiment in Grignon (France) where plots received no organic matter, or only fresh straw or composted straw.
Identification of General Patterns of Nutrient and Labile Carbon Control on Soil Carbon Dynamics Across a Successional Gradient
TL;DR: In this article, the authors explored the support for these contrasting hypotheses by using the natural gradient of soil nutrient availability and substrate quality of a chronosequence, combined with labile C and nutrient amendments, and found that the response to C addition supported the preferential substrate hypothesis for easily degradable litter C and the priming hypothesis for SOC, but only in nitrogen-enriched soils of the forest site.
Understory ferns alter soil carbon chemistry and increase carbon storage during reforestation with native pine on previously degraded sites
Maokui Lyu,Maokui Lyu,Jinsheng Xie,Christian P. Giardina,Matthew A. Vadeboncoeur,Xiaojuan Feng,Minhuang Wang,Liisa Ukonmaanaho,Teng Chiu Lin,Yakov Kuzyakov,Yusheng Yang +10 more
TL;DR: In this article, the authors studied different aged Masson pine plantations with and without the understory fern, Dicranopteris dichotoma (Thunb.) Berhn, in subtropical China to assess how SOM over a 30-year sequence of pine growth and fern expansion.
Fate of Chinese-fir litter during decomposition as a result of inorganic N additions
TL;DR: In this article, a controlled experiment was conducted to evaluate Chinese-fir litter decomposition and its response to the addition of inorganic N. The results showed that only a small percentage of litter C was retained as MBC or DOC and that the conversion rate depended, in part, on the form of N added to the Chinesefir plantation soil.
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