Matching policy and science: Rationale for the ‘4 per 1000 - soils for food security and climate’ initiative

4 per 1000 research program, 2017, (Accessed May 20, 2017) http://www6.inra.fr/4p1000science/The-Research-Program. 4 per 1000, 2017 Assad, 2013, Changes in soil carbon stocks in Brazil due to land use: paired site comparisons and a regional pasture soil survey, Biogeosciences, 10, 6141, 10.5194/bg-10-6141-2013 Balesdent, 1999, Usage des terres et stockage de carbone dans les sols du territoire français. Une estimation des flux nets annuels pour la période 1900–1999, C. R. Acad. Agric. Fr., 85, 6 Barioni, 2017, Reducing beef consumption might not reduce emissions: response to Phalan et al. (2016), Global Change Biol., 23, e1, 10.1111/gcb.13458 Batjes, 1996, Total carbon and nitrogen in the soils of the world, Eur. J. Soil Sci., 47, 151, 10.1111/j.1365-2389.1996.tb01386.x Bolin, 1986 Branca, 2013, Food security, climate change: and sustainable land management. A review, Agron. Sustainable Dev., 33, 635, 10.1007/s13593-013-0133-1 Braz, 2013, Soil carbon stocks under productive and degraded pastures in the Brazilian Cerrado, Soil Sci. Soc. Am. J., 77, 914, 10.2136/sssaj2012.0269 Campioli, 2015, Biomass production efficiency controlled by management in temperate and boreal ecosystems, Nat. Geosci., 8, 843, 10.1038/ngeo2553 Carlson, 2017, Greenhouse gas emissions intensity of global croplands, Nat. Clim. Change, 7, 63, 10.1038/nclimate3158 Chabbi, 2017, Aligning agriculture and climate policy, Nat. Clim. Change, 7, 307, 10.1038/nclimate3286 Chappell, 2016, The global significance of omitting soil erosion from soil organic carbon cycling schemes, Nat. Clim. Change, 6, 187, 10.1038/nclimate2829 Ciais, 2013, Carbon and other biogeochemical cycles Conant, 2017, Grassland management impacts on soil carbon stocks: a new synthesis, Ecol. Appl., 27, 662, 10.1002/eap.1473 Conrad, 2009, The global methane cycle: recent advances in understanding the microbial processes involved, Environ. Microbiol. Rep., 1, 285, 10.1111/j.1758-2229.2009.00038.x Corbeels, M., Naudin, K., Guibert, H., Torquebiau, E., Cardinael, R., Is the 4 per Thousand Initiative for soil organic carbon storage achievable in sub-Saharan Africa? Insights from agroforestry and conservation agriculture, (in preparation). DeLonge, 2013, A lifecycle model to evaluate carbon sequestration potential and greenhouse gas dynamics of managed grasslands, Ecosystems, 16, 962, 10.1007/s10021-013-9660-5 Derpsch, 2010, Current status of adoption of No-till farming in the world and some of its main benefits, Int. J. Agric. Biol. Eng., 3, 1 Dignac, 2017, Increasing soil carbon storage: mechanisms, effects of agricultural practices and proxies. A review, Agron. Sustainable Dev., 37, 14, 10.1007/s13593-017-0421-2 Dlugokencky, 2017 Dumanski, 2013, Modern concepts of soil conservation, Int. Soil Water Conserv. Res., 1, 19, 10.1016/S2095-6339(15)30046-0 Ellison, 2017, Trees, forests and water: cool insights for a hot world, Global Environ. Change, 43, 51, 10.1016/j.gloenvcha.2017.01.002 FAO and ITPS, 2015 FAO, 2017 Fawcett, 2015, Can Paris pledges avert severe climate change?, Science, 350, 1168, 10.1126/science.aad5761 Feng, 2013, Improving estimates of maximal organic carbon stabilization by fine soil particles, Biogeochemistry, 112, 81, 10.1007/s10533-011-9679-7 Fontaine, 2007, Stability of organic carbon in deep soil layers controlled by fresh carbon supply, Nature, 450, 277, 10.1038/nature06275 Frank, 2017, Reducing greenhouse gas emissions in agriculture without compromising food security?, Environ. Res. Lett., 12, 105004, 10.1088/1748-9326/aa8c83 GFED, 2016 GSP, 2017 Gerber, 2013 Giller, 2009, Conservation agriculture and smallholder farming in Africa: the heretics’ view, Field Crops Res., 114, 23, 10.1016/j.fcr.2009.06.017 Grassi, 2017, The key role of forests in meeting climate targets requires science for credible mitigation, Nat. Clim. Change, 7, 220, 10.1038/nclimate3227 Guimarães, 2013, Soil organic matter pools and carbon fractions in soil under different land uses, Soil Tillage Res., 126, 177, 10.1016/j.still.2012.07.010 Haberl, 2014, Human appropriation of net primary production: patterns trends, and planetary boundaries, Annu. Rev. Environ. Resour., 39, 363, 10.1146/annurev-environ-121912-094620 He, 2016, Radiocarbon constraints imply reduced carbon uptake by soils during the 21 st century, Science, 353, 1419, 10.1126/science.aad4273 Herrero, 2016, Greenhouse gas mitigation potentials in the livestock sector, Nat. Clim. Change, 6, 452, 10.1038/nclimate2925 Herrick, 2013, Land degradation and climate change: a sin of omission?, Front. Ecol. Environ., 11, 283, 10.1890/1540-9295-11.6.283 Hiederer, 2011 Hijbeek, 2017, Do organic inputs matter –a meta-analysis of additional yield effects for arable crops in Europe, Plant Soil, 411, 293, 10.1007/s11104-016-3031-x Houghton, 2015, A role for tropical forests in stabilizing atmospheric CO2, Nat. Clim. Change, 5, 1022, 10.1038/nclimate2869 Houlton, 2008, A unifying framework for dinitrogen fixation in the terrestrial biosphere, Nature, 454, 327, 10.1038/nature07028 IPBES, 2017 IPCC, 2000 IPCC, 2013, Climate Change 2013: The Physical Science Basis, 2013, 2013 IPCC, 2014, Climate Change 2014: Mitigation of Climate Change, 2014 Jansson, 2010, Phytosequestration: carbon biosequestration by plants and the prospects of genetic engineering, Bioscience, 60, 685, 10.1525/bio.2010.60.9.6 Jobbágy, 2000, The vertical distribution of soil organic carbon and its relation to climate and vegetation, Ecol. Appl., 10, 423, 10.1890/1051-0761(2000)010[0423:TVDOSO]2.0.CO;2 Keesstra, 2016, The significance of soils and soil science towards realization of the United Nations Sustainable Development Goals, Soil, 2, 111, 10.5194/soil-2-111-2016 Kirkby, 2011, Stable soil organic matter: a comparison of C:N:P:S ratios in Australian and other world soils, Geoderma, 163, 197, 10.1016/j.geoderma.2011.04.010 Kirkby, 2014, Nutrient availability limits carbon sequestration in arable soils, Soil Biol. Biochem., 68, 402, 10.1016/j.soilbio.2013.09.032 Lüscher, 2014, Potential of legume-based grassland–livestock systems in Europe: a review, Grass Forage Sci., 69, 206, 10.1111/gfs.12124 Lacape, 2016, Enhanced drought adaptation in african savanna crops, 59 Lal, 2006, Enhancing crop yields in the developing countries through restoration of the soil organic carbon pool in agricultural lands, Land Degrad. Dev., 17, 197, 10.1002/ldr.696 Lal, 2010, Managing soils and ecosystems for mitigating anthropogenic carbon emissions and advancing global food security, Bioscience, 60, 708, 10.1525/bio.2010.60.9.8 Lal, 2016, Global food security and nexus thinking, J. Soil Water Conserv., 71, 10.2489/jswc.71.4.85A Legendre, 2012 Le Quéré, 2015, Global carbon budget 2014, Earth Syst. Sci. Data, 7, 47, 10.5194/essd-7-47-2015 Lipper, 2014, Climate-smart agriculture for food security, Nat. Clim. Change, 4, 1068, 10.1038/nclimate2437 Lorenz, 2014, Soil organic carbon sequestration in agroforestry systems. A review, Agron. Sust. Dev., 34, 443, 10.1007/s13593-014-0212-y Lowder, 2014 Lugato, 2016, Quantifying the erosion effect on current carbon budget of European agricultural soils at high spatial resolution, Global Change Biol., 22, 1976, 10.1111/gcb.13198 Luo, 2010, Can no-tillage stimulate carbon sequestration in agricultural soils? A meta-analysis of paired experiments, Agric. Ecosyst. Environ., 139, 224, 10.1016/j.agee.2010.08.006 Lutfalla, 2017, Pyrogenic carbon lacks long-Term persistence in temperate arable soils, Front. Earth Sci., 5, 96, 10.3389/feart.2017.00096 Minasny, 2017, Soil carbon 4 per mille, Geoderma, 292, 59, 10.1016/j.geoderma.2017.01.002 Montanarella, 2015, Agricultural policy: govern our soils, Nat. News, 528, 32, 10.1038/528032a Mukherjee, 2014, The biochar dilemma, Soil Res., 52, 217, 10.1071/SR13359 Nabuurs, 2007 Nair, 2009, Agroforestry as a strategy for carbon sequestration, J. Plant Nutr. Soil Sci., 172, 10, 10.1002/jpln.200800030 Ogle, 2005, Agricultural management impacts on soil organic carbon storage under moist and dry climatic conditions of temperate and tropical regions, Biogeochem, 72, 87, 10.1007/s10533-004-0360-2 Orr, 2017 Page, 2002, The amount of carbon released from peat and forest fires in Indonesia during 1997, Nature, 420, 61, 10.1038/nature01131 Pan, 2009, The role of soil organic matter in maintaining the productivity and yield stability of cereals in China, Agric. Ecosyst. Environ., 129, 344, 10.1016/j.agee.2008.10.008 Pan, 2011, A large and persistent carbon sink in the world’s forests, Science, 333, 988, 10.1126/science.1201609 Paustian, 2016, Climate-smart soils, Nature, 532, 49, 10.1038/nature17174 Peñuelas, 2013, Human-induced nitrogen–phosphorus imbalances alter natural and managed ecosystems across the globe, Nat. Commun., 4, 2934, 10.1038/ncomms3934 Phalan, 2016, Increasing beef production won’t reduce emissions, Global Change Biol., 22, 3255, 10.1111/gcb.13436 Pittelkow, 2015, Productivity limits and potentials of the principles of conservation agriculture, Nature, 517, 365, 10.1038/nature13809 Poeplau, 2015, Carbon sequestration in agricultural soils via cultivation of cover crops–A meta-analysis, Agric. Ecosyst. Environ., 200, 33, 10.1016/j.agee.2014.10.024 Popp, 2017, Land-use futures in the shared socio-economic pathways, Global Environ. Change, 42, 331, 10.1016/j.gloenvcha.2016.10.002 Powlson, 2014, Limited potential of no-till agriculture for climate change mitigation, Nat. Clim. Change, 4, 678, 10.1038/nclimate2292 Richards, 2016 Rosenstock, 2016 Scharlemann, 2014, Global soil carbon: understanding and managing the largest terrestrial carbon pool, Carbon Manage., 5, 81, 10.4155/cmt.13.77 Schmidt, 2011, Persistence of soil organic matter as an ecosystem property, Nature, 478, 49, 10.1038/nature10386 Sinclair, 1998, Historical changes in harvest index and crop nitrogen accumulation, Crop Sci., 38, 638, 10.2135/cropsci1998.0011183X003800030002x Six, 2002, Stabilization mechanisms of soil organic matter: implications for C-saturation of soils, Plant Soil, 241, 155, 10.1023/A:1016125726789 Smith, 2008, Greenhouse gas mitigation in agriculture, Philos. Trans. R. Soc. Lond. B Biol. Sci., 363, 789, 10.1098/rstb.2007.2184 Smith, 2013, How much land-based greenhouse gas mitigation can be achieved without compromising food security and environmental goals?, Global Change Biol., 19, 2285, 10.1111/gcb.12160 Smith, 2014, Agriculture, forestry and other land use (AFOLU) Smith, 2016, Biophysical and economic limits to negative CO2 emissions, Nat. Clim. Change, 6, 42, 10.1038/nclimate2870 Sommer, 2014, Dynamics and climate change mitigation potential of soil organic carbon sequestration, J. Environ. Manage., 144, 83, 10.1016/j.jenvman.2014.05.017 Soussana, 2014, Coupling carbon and nitrogen cycles for environmentally sustainable intensification of grasslands and crop-livestock systems, Agric. Ecosyst. Environ., 190, 9, 10.1016/j.agee.2013.10.012 Soussana, 2010, Mitigating the greenhouse gas balance of ruminant production systems through carbon sequestration in grasslands, Animal, 4, 334, 10.1017/S1751731109990784 Stockmann, 2013, The knowns, known unknowns and unknowns of sequestration of soil organic carbon, Agric. Ecosyst. Environ., 164, 80, 10.1016/j.agee.2012.10.001 The Bonn Challenge, 2017, (Accessed April 26, 2017) http://www.bonnchallenge.org/content/challenge. Tian, 2016, The terrestrial biosphere as a net source of greenhouse gases to the atmosphere, Nature, 531, 225, 10.1038/nature16946 Torquebiau, 1996, Root development in a Sesbania sesban fallow-maize system in Eastern Zambia, Agrofor. Syst., 34, 193, 10.1007/BF00148162 UNCCD Global Mechanism, 2017, (Accessed on May 20, 2017) http://www2.unccd.int/about-us/global-mechanism. UNEP, 2015 Virto, 2012, Carbon input differences as the main factor explaining the variability in soil organic C storage in no-tilled compared to inversion tilled agrosystems, Biogeochemistry, 108, 17, 10.1007/s10533-011-9600-4 WOCAT, 2017 Walsh, 2017, Pathways for balancing CO2 emissions and sinks, Nat. Commun., 8, 14856, 10.1038/ncomms14856 Wang, 2017, Human-induced erosion has offset one-third of carbon emissions from land cover change, Nat. Clim. Change, 7, 345, 10.1038/nclimate3263 Ward, 2016, Legacy effects of grassland management on soil carbon to depth, Global Change Biol., 22, 2929, 10.1111/gcb.13246 Wollenberg, 2016, Reducing emissions from agriculture to meet the 2 °C target, Global Change Biol., 22, 3859, 10.1111/gcb.13340 WorldBank, 2017 Worldwatch Institute, 2017 Yin, 2016, Variability of fire carbon emissions in equatorial Asia and its nonlinear sensitivity to El Niño, Geophys. Res. Lett., 43, 10.1002/2016GL070971 Zomer, 2016, Global Tree Cover and Biomass Carbon on Agricultural Land: the contribution of agroforestry to global and national carbon budgets, Sci. Rep., 6, 10.1038/srep29987 de Oliveira Silva, 2016, Increasing beef production could lower greenhouse gas emissions in Brazil if decoupled from deforestation, Nat. Clim. Change, 6, 493, 10.1038/nclimate2916 van Groenigen, 2017, Sequestering soil organic carbon: a nitrogen dilemma, Environ. Sci. Technol., 51, 4738, 10.1021/acs.est.7b01427 van Kessel, 2013, Climate, duration, and N placement determine N2O emissions in reduced tillage systems: a meta-analysis, Global Change Biol., 19, 33, 10.1111/j.1365-2486.2012.02779.x