Elsevier

Pedosphere

Volume 27, Issue 5, October 2017, Pages 792-806
Pedosphere

Soil Carbon Dynamics Under Changing Climate—A Research Transition from Absolute to Relative Roles of Inorganic Nitrogen Pools and Associated Microbial Processes: A Review

https://doi.org/10.1016/S1002-0160(17)60488-0Get rights and content

Abstract

It is globally accepted that soil carbon (C) dynamics are at the core of interlinked environmental problems, deteriorating soil quality and changing climate. Its management remains a complex enigma for the scientific community due to its intricate relationship with soil nitrogen (N) availability and moisture-temperature interactions. This article reviews the management aspects of soil C dynamics in light of recent advances, particularly in relation to the availability of inorganic N pools and associated microbial processes under changing climate. Globally, drastic alterations in soil C dynamics under changing land use and management practices have been primarily attributed to the variation in soil N availability, resulting in a higher decomposition rate and a considerable decline in soil organic C (SOC) levels due to increased soil CO2 emissions, degraded soil quality, and increased atmospheric CO2 concentrations, leading to climate warming. Predicted climate warming is proposed to enhance SOC decomposition, which may further increase soil N availability, leading to higher soil CO2 efflux. However, a literature survey revealed that soil may also act as a potential C sink, if we could manage soil inorganic N pools and link microbial processes properly. Studies also indicated that the relative, rather than the absolute, availability of inorganic N pools might be of key importance under changing climate, as these N pools are variably affected by moisture-temperature interactions, and they have variable impacts on SOC turnover. Therefore, multi-factorial studies are required to understand how the relative availability of inorganic N pools and associated microbial processes may determine SOC dynamics for improved soil C management.

References (117)

  • R Lal

    Soil carbon sequestration to mitigate climate change

    Geoderma

    (2004)
  • X Li et al.

    The contrasting effects of deposited NH+4 and NO3 on soil CO2, CH4 and N2O fluxes in a subtropical plantation, southern China

    Ecol Eng

    (2015)
  • H Liu et al.

    Greenhouse gas fluxes from soils of different land-use types in a hilly area of South China

    Agric Ecosyst Environ

    (2008)
  • E J Lundquist et al.

    Wet-dry cycles affect dissolved organic carbon in two California agricultural soils

    Soil Biol Biochem

    (1999)
  • Q P Luo et al.

    The responses of soil respiration to nitrogen addition in a temperate grassland in northern China

    Sci Total Environ

    (2016)
  • E Mariano et al.

    Mineral nitrogen forms alter 14C-glucose mineralisation and nitrogen transformations in litter and soil from two sugarcane fields

    Appl Soil Ecol

    (2016)
  • K Min et al.

    Effects of ammonium and nitrate additions on carbon mineralization in wetland soils

    Soil Biol Biochem

    (2011)
  • S Moseman-Valtierra et al.

    Short-term nitrogen additions can shift a coastal wetland from a sink to a source of N2O

    Atmos Environ

    (2011)
  • L Morillas et al.

    Wetting and drying events determine soil N pools in two Mediterranean ecosystems

    Appl Soil Ecol

    (2013)
  • C Müller et al.

    Evidence of carbon stimulated N transformations in grassland soil after slurry application

    Soil Biol Biochem

    (2003)
  • A L Romero-Olivares et al.

    Soil microbes and their response to experimental warming over time: A meta-analysis of field studies

    Soil Biol Biochem

    (2017)
  • B K Singh et al.

    Impact of biotic and abiotic interaction on soil microbial communities and functions: A field study

    Appl Soil Ecol

    (2009)
  • R Singh et al.

    Riparian land uses affect the dry season soil CO2 efflux under dry tropical ecosystems

    Ecol Eng

    (2017)
  • R Singh et al.

    Herbaceous species diversity and soil attributes along a forest-savanna-grassland continuum in a dry tropical region

    Ecol. Eng

    (2017)
  • P Srivastava et al.

    Soil carbon efflux and sequestration as a function of relative availability of inorganic N pools in dry tropical agroecosystem

    Appl Soil Ecol

    (2015)
  • P Srivastava et al.

    Relative availability of inorganic N-pools shifts under land use change: An unexplored variable in soil carbon dynamics

    Ecol Indic

    (2016)
  • P Srivastava et al.

    Organic amendment impact on SOC dynamics in dry tropics: A possible role of relative availability of inorganic-N pools

    Agric Ecosyst Environ

    (2016)
  • P Srivastava et al.

    An urgent need for sustainable thinking in agriculture – An Indian scenario

    Ecol Indic

    (2016)
  • J M Alston et al.

    Agricultural research, productivity, and food prices in the long run

    Science

    (2009)
  • E Bai et al.

    A meta-analysis of experimental warming effects on terrestrial nitrogen pools and dynamics

    New Phytol

    (2013)
  • X Y Bao et al.

    Effects of soil temperature and moisture on soil respiration on the Tibetan Plateau

    PLoS ONE

    (2016)
  • R Bardgett et al.

    Microbial contributions to climate change though carbon cycle feedbacks

    Int Soc Micro Ecol J

    (2008)
  • R D Bardgett et al.

    Belowground biodiversity and ecosystem functioning

    Nature

    (2014)
  • R J Bijlsma et al.

    A dynamic whole-plant model of integrated metabolism of nitrogen and carbon. 1. Comparative ecological implications of ammonium-nitrate interactions

    Plant Soil

    (2000)
  • A K Björsne et al.

    Combined climate factors alleviate changes in gross soil nitrogen dynamics in heathlands

    Biogeochemistry

    (2014)
  • N C Brady et al.

    The Nature and Properties of Soils

    (2002)
  • D E Canfield et al.

    The evolution and future of Earth's nitrogen cycle

    Science

    (2010)
  • S Chakraborty et al.

    Climate change and multitrophic interactions in soil: the primacy of plants and functional domains

    Glob Change Biol

    (2012)
  • P M Currey et al.

    Turnover of labile and recalcitrant soil carbon differ in response to nitrate and ammonium deposition in an ombrotrophic peatland

    Glob Change Biol

    (2010)
  • E A Davidson et al.

    Temperature sensitivity of soil carbon decomposition and feedbacks to climate change

    Nature

    (2006)
  • E A Davidson et al.

    Recuperation of nitrogen cycling in Amazonian forests following agricultural abandonment

    Nature

    (2007)
  • M Delgado-Baquerizo et al.

    Relative importance of soil properties and microbial community for soil functionality: insights from a microbial swap experiment

    Funct Ecol

    (2016)
  • M Delgado-Baquerizo et al.

    Decoupling of soil nutrient cycles as a function of aridity in global drylands

    Nature

    (2013)
  • M Delgado-Baquerizo et al.

    It is elemental: soil nutrient stoichiometry drives bacterial diversity

    Environ Microbiol

    (2017)
  • Y H Du et al.

    Different types of nitrogen deposition show variable effects on the soil carbon cycle process of temperate forests

    Glob Change Biol

    (2014)
  • H J Fang et al.

    Effects of multiple environmental factors on CO2 emission and CH4 uptake from old-growth forest soils

    Biogeosciences

    (2010)
  • FAO

    Soil Carbon Sequestration for Improved Land Management. World Soil Resources Reports 96

    (2001)
  • N Gruber et al.

    An Earth-system perspective of the global nitrogen cycle

    Nature

    (2008)
  • S Hallin et al.

    Relationship between N-cycling communities and ecosystem functioning in a 50-year-old fertilization experiment

    ISME J

    (2009)
  • S C Hart

    Potential impacts of climate change on nitrogen transformations and greenhouse gas fluxes in forests: a soil transfer study

    Glob Change Biol

    (2006)
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