Journal ArticleDOI
Soil carbon storage controlled by interactions between geochemistry and climate
Sebastian Doetterl,Sebastian Doetterl,Antoine Stevens,Antoine Stevens,Johan Six,Roel Merckx,Kristof Van Oost,Manuel Casanova Pinto,Angélica Casanova-Katny,Cristina Muñoz,Mathieu Boudin,Erick Zagal Venegas,Pascal Boeckx +12 more
TLDR
In this paper, the authors measured a range of soil and climate variables at 24 sites along a 4,000 km-long north-south transect of natural grassland and shrubland in Chile and the Antarctic Peninsula, which spans a broad range of climatic and geochemical conditions.Abstract:
Rising temperature can increase soil organic matter decomposition and CO2 emissions. In a 4,000 km north–south transect in Chile and Antarctica, soil geochemistry, which can be modified by climate, is the dominant direct control of carbon storage. Soils are an important site of carbon storage1. Climate is generally regarded as one of the primary controls over soil organic carbon1,2, but there is still uncertainty about the direction and magnitude of carbon responses to climate change. Here we show that geochemistry, too, is an important controlling factor for soil carbon storage. We measured a range of soil and climate variables at 24 sites along a 4,000-km-long north–south transect of natural grassland and shrubland in Chile and the Antarctic Peninsula, which spans a broad range of climatic and geochemical conditions. We find that soils with high carbon content are characterized by substantial adsorption of carbon compounds onto mineral soil and low rates of respiration per unit of soil carbon; and vice versa for soils with low carbon content. Precipitation and temperature were only secondary predictors for carbon storage, respiration, residence time and stabilization mechanisms. Correlations between climatic variables and carbon variables decreased significantly after removing relationships with geochemical predictors. We conclude that the interactions of climatic and geochemical factors control soil organic carbon storage and turnover, and must be considered for robust prediction of current and future soil carbon storage.read more
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Journal ArticleDOI
Soil carbon 4 per mille
Budiman Minasny,Brendan P. Malone,Alex B. McBratney,Denis A. Angers,Dominique Arrouays,Adam Chambers,Vincent Chaplot,Zueng-Sang Chen,Kun Cheng,Bhabani S. Das,Damien J. Field,Alessandro Gimona,Carolyn Hedley,Suk Young Hong,Biswapati Mandal,Ben P. Marchant,Manuel Martin,Brian McConkey,Vera Leatitia Mulder,Sharon M. O’Rourke,Anne C. Richer-de-Forges,Inakwu O. A. Odeh,José Padarian,Keith Paustian,Genxing Pan,Laura Poggio,Igor Savin,Vladimir Stolbovoy,Uta Stockmann,Yiyi Sulaeman,Chun Chih Tsui,Tor-Gunnar Vågen,Bas van Wesemael,Leigh A. Winowiecki +33 more
TL;DR: In this paper, the authors surveyed the soil organic carbon (SOC) stock estimates and sequestration potentials from 20 regions in the world (New Zealand, Chile, South Africa, Australia, Tanzania, Indonesia, Kenya, Nigeria, India, China Taiwan, South Korea, China Mainland, United States of America, France, Canada, Belgium, England & Wales, Ireland, Scotland, and Russia).
Journal ArticleDOI
Soil organic carbon storage as a key function of soils - A review of drivers and indicators at various scales
Martin Wiesmeier,Livia Urbanski,Eleanor Hobley,Birgit Lang,Margit von Lützow,Erika Marin-Spiotta,Bas van Wesemael,Eva Rabot,Mareike Ließ,Noelia Garcia-Franco,Ute Wollschläger,Hans-Jörg Vogel,Ingrid Kögel-Knabner +12 more
TL;DR: In this paper, the authors identify measurable biotic or abiotic properties that control soil organic carbon (SOC) storage at different spatial scales and could serve as indicators for an efficient quantification of SOC.
Journal ArticleDOI
The Ecology of Soil Carbon: Pools, Vulnerabilities, and Biotic and Abiotic Controls
TL;DR: This analysis suggests root inputs are approximately five times more likely than an equivalent mass of aboveground litter to be stabilized as SOM, and that fungi and bacteria, and soil faunal food webs, and mineral associations drive stabilization at depths greater than ∼30 cm.
Journal ArticleDOI
Managing uncertainty in soil carbon feedbacks to climate change
Mark A. Bradford,William R. Wieder,William R. Wieder,Gordon B. Bonan,Noah Fierer,Noah Fierer,Peter A. Raymond,Thomas W. Crowther +7 more
TL;DR: In this paper, the uncertainties and modelling challenges involved in projecting soil responses to global warming are considered, and a review of the modelling challenges and uncertainties involved in predicting soil responses is presented.
Journal ArticleDOI
Calcium-mediated stabilisation of soil organic carbon
TL;DR: In this article, a review of available evidence on the potential role of Ca in the stabilisation of organic carbon (SOC) pools is presented, highlighting the importance of pH as a potential predictor of SOC stabilisation mechanisms mediated by Al- or Fe- to Ca, and their respective effects on SOC dynamics.
References
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TL;DR: Copyright (©) 1999–2012 R Foundation for Statistical Computing; permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and permission notice are preserved on all copies.
Journal ArticleDOI
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Journal ArticleDOI
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M.R. Carter,Edward G. Gregorich +1 more
TL;DR: In this paper, the authors present a set of methods for soil sampling and analysis, such as: N.H.Hendershot, H.M.Hettiarachchi, C.C.De Freitas Arbuscular Mycorrhiza, Y.K.Soon and W.J.