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
Disentangling the effects of nitrogen availability and soil acidification on microbial taxa and soil carbon dynamics in natural grasslands
TL;DR: In this article , the effects of increased nitrogen availability and soil acidification on relative abundance of bacterial and fungal taxa under mild (soil incubation for 28 days) and strong microbial C limitation conditions in natural ecosystems are disentangled.
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Digestate Not Only Affects Nutrient Availability but Also Soil Quality Indicators
TL;DR: In this article , the authors evaluated the effect of digestate on chemical and biological soil properties in a field experiment in eastern Portugal with two horticultural crops involving nine treatments: control without fertilization, mineral N fertilization with 85 kg ha−1; fertilisation with digestate (DG) with increasing N rates (85, 170, 255, or 340 kg N ha− 1); and fertilization of DG with different combinations of DG plus mineral N (dG at 85 or 170 kg N plus 60 kg mineral N ha −1 or DG at 170 kg n plus 25 kg mineral n ha − 1).
Negative priming of soil organic matter following long-term in situ warming of sub-arctic soils
Niel Verbrigghe,Kathiravan Meeran,Michael Bahn,Lucia Fuchslueger,Ian Janssen,A. Richter,Bjarni D. Sigurdsson,Jennifer L. Soong,Sara Vicca +8 more
TL;DR: In this article , a short-term incubation experiment (6 days) with soils from a subarctic grassland that had been subjected to long-term geothermal warming (>55 years) by 2-4°C above unwarmed soil was conducted.
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