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
The quality and quantity of SOM determines the mineralization of recently added labile C and priming of native SOM in grazed grasslands
TL;DR: In this paper , 13C-labeled glucose was added to six temperate grassland soils with different C/N ratios (9.98-12.0), which were collected from areas with different grazing exclusion duration and at different soil depths.
11
Decreased Soil Microbial Nitrogen Under Vegetation ‘Shrubification’ in the Subarctic Forest–Tundra Ecotone: The Potential Role of Increasing Nutrient Competition Between Plants and Soil Microorganisms
Sari Stark,Rajesh Kumar,Eero Myrsky,Anu Kantola,Ville-Veikko Telkki,Sofie Sjögersten,Johan Olofsson,Minna K. Männistö +7 more
TL;DR: In this paper , the authors analyzed soil organic matter stocks and 13 C NMR fractions, microbial CO 2 respiration, biomass, extracellular enzyme activities (EEAs), and their association with shrub density in northern Sweden after 20 years of experimental warming using open top chambers (OTCs).
Chemical Composition of Plant Residues Regulates Soil Organic Carbon Turnover in Typical Soils with Contrasting Textures in Northeast China Plain
Si-jia Liu,Jiangye Li,Aizhen Liang,Yan Duan,Haibin Chen,Zhu Hao Yu,Ruqin Fan,Haiyang Liu,Hong Pan +8 more
TL;DR: Zhang et al. as discussed by the authors conducted a 61-day aerobic incubation with two Black soils with distinct texture (clay loam vs. sandy loam) in Northeast China and found that leaves of both two crops contained significantly higher nitrogen (N), carbonyl and aryl concentrations and lower carbon (C) and lignin concentrations than other parts, resulting in faster decomposition in soils, especially in the clay loam.
Dynamic interactions of nitrogen fertilizer and straw application on greenhouse gas emissions and sequestration of soil carbon and nitrogen: A 13-year field study
TL;DR: In this paper , the long-term effects on methane (CH4) and nitrous oxide (N2O) emissions and soil organic carbon (SOC) and total nitrogen sequestration rates are poorly documented.
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Carbon balance as affected by biosolid application in reforestations
TL;DR: In this article, the authors conducted research within the framework of research projects funded by the Spanish Ministries of Environment (BIOMET•608/2006/1‐4.4), the European Commission FP7 (CASCADE/GA283068), and the Government of the Valencia Region (DESTRES‐PROMETEUII/2014/038).
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