Alcantara V, Don A, Well R, Nieder R (2016) Deep ploughing increases agricultural soil organic matter stocks. Glob Chang Biol 22:2939–2956
Baer SG, Kitchen DJ, Blair JM, Rice CW (2002) Changes in Ecosystem Structure and Function Along a Chronosequence of Restored Grasslands. Ecol Appl 12:1688–1701
Baer SG, Meyer CK, Bach EM, Klopf RP, Six J (2010) Contrasting ecosystem recovery on two soil textures: implications for carbon mitigation and grassland conservation. Ecosphere 1
Bell S, Barriocanal C, Terrer C, Rosell-Melé A (2020) Management opportunities for soil carbon sequestration following agricultural land abandonment. Environ Sci Policy 108:104–111
Bending GD, Turner MK, Jones JE (2002) Interactions between crop residue and soil organic matter quality and the functional diversity of soil microbial communities. Soil Biol Biochem 34:1073–1082
Billings SA, Ziegler SE (2008) Altered patterns of soil carbon substrate usage and heterotrophic respiration in a pine forest with elevated CO2 and N fertilization. Glob Change Biol 14:1025–1036
Bronson KF, Zobeck TM, Chua TT, Acosta-Martinez V, van Pelt RS, Booker JD (2004) Carbon and Nitrogen Pools of Southern High Plains Cropland and Grassland Soils. Soil Sci Soc Am J 68:1695
Conant RT, Paustian K, Elliott ET, Monton B, Kierland B (2001) Grassland management and conversion into grassland: effects on soil carbon. Ecol Appl 11:343–355
Dijkstra FA, Bader NE, Johnson DW, Cheng W (2009) Does accelerated soil organic matter decomposition in the presence of plants increase plant N availability. Soil Biol Biochem 41:1080–1087
Douglas B, Martin Ma, Ben B, Steve W (2015) Fitting Linear Mixed-Effects Models Using lme4. J Stat Softw 67:1–48
Drake JE, Gallet-Budynek A, Hofmockel KS, Bernhardt ES, Billings SA, Jackson RB, Johnsen KS, Lichter J, McCarthy HR, McCormack ML (2011) Increases in the flux of carbon belowground stimulate nitrogen uptake and sustain the long‐term enhancement of forest productivity under elevated CO2. Ecol Lett 14:349–357
Fry JA, Xian G, Jin S, Dewitz JA, Homer CG, Yang L, Barnes CA, Herold ND, Wickham JD (2011) Completion of the 2006 national land cover database for the conterminous United States. PE&RS, Photogrammetric Engineering & Remote Sensing 77, 858–864
Gebhart DL, Johnson HB, Mayeux H, Polley H (1994) The CRP increases soil organic carbon. J Soil Water Conserv 49:488–492
Gelfand I, Zenone T, Jasrotia P, Chen J, Hamilton SK, Robertson GP (2011) Carbon debt of Conservation Reserve Program (CRP) grasslands converted to bioenergy production. Proceedings of the National Academy of Sciences 108, 13864–13869
Guo Y, Amundson R, Gong P, Yu Q (2006) Quantity and spatial variability of soil carbon in the conterminous United States. Soil Sci Soc Am J 70:590–600
Jackson RB, Canadell J, Ehleringer JR, Mooney HA, Sala OE, Schulze ED (1996) A global analysis of root distributions for terrestrial biomes. Oecologia 108:389–411
Jobbágy EG, Jackson RB (2000) The vertical distribution of soil organic carbon and its relation to climate and vegetation. Ecol Appl 10:423–436
Jones MB, Donnelly A (2004) Carbon sequestration in temperate grassland ecosystems and the influence of management, climate and elevated CO2. New Phytol 164:423–439
Kern JS (1994) Spatial patterns of soil organic carbon in the contiguous United States. Soil Sci Soc Am J 58:439–455
Knops JMH, Bradley KL (2009) Soil Carbon and Nitrogen Accumulation and Vertical Distribution across a 74-Year Chronosequence. Soil Sci Soc Am J 73:2096–2104
Knops JMH, Tilman D (2000) Dynamics of soil nitrogen and carbon accumulation for 61 years after agricultural abandonment. Ecology 81:88–98
Kochsiek AE, Knops JMH (2012) Maize cellulosic biofuels: soil carbon loss can be a hidden cost of residue removal. GCB Bioenergy 4:229–233
Kucharik CJ (2007) Impact of Prairie Age and Soil Order on Carbon and Nitrogen Sequestration. Soil Sci Soc Am J 71:430–441
Kuzyakov Y (2010) Priming effects: Interactions between living and dead organic matter. Soil Biol Biochem 42:1363–1371
Kuzyakov Y, Domanski G (2000) Carbon input by plants into the soil. Review Journal of Plant Nutrition Soil Science 163:421–431
Lal R (2004) Carbon emission from farm operations. Environ Int 30:981–990
Li C, Fultz LM, Moore-Kucera J, Acosta-Martínez V, Horita J, Strauss R, Zak J, Calderón F, Weindorf D (2017) Soil carbon sequestration potential in semi-arid grasslands in the Conservation Reserve Program. Geoderma 294:80–90
Lorenz K, Lal R (2005) The Depth Distribution of Soil Organic Carbon in Relation to Land Use and Management and the Potential of Carbon Sequestration in Subsoil Horizons, pp. 35–66
Luo Z, Wang E, Sun OJ (2010) Can no-tillage stimulate carbon sequestration in agricultural soils? A meta-analysis of paired experiments. Agr Ecosyst Environ 139:224–231
McMahon SK, Williams MA, Bottomley PJ, Myrold DD (2005) Dynamics of Microbial Communities during Decomposition of Carbon-13 Labeled Ryegrass Fractions in Soil. Soil Sci Soc Am J 69:1238–1247
Mobley ML, Lajtha K, Kramer MG, Bacon AR, Heine PR, Richter DD (2015) Surficial gains and subsoil losses of soil carbon and nitrogen during secondary forest development. Glob Chang Biol 21:986–996
Munson SM, Lauenroth WK, Burke IC (2012) Soil carbon and nitrogen recovery on semiarid Conservation Reserve Program lands. J Arid Environ 79:25–31
O'Brien SL, Jastrow JD, Grimley DA, Gonzalez-Meler MA (2010) Moisture and vegetation controls on decadal-scale accrual of soil organic carbon and total nitrogen in restored grasslands. Glob Change Biol 16:2573–2588
Post WMM, Kwon KCC (2000) Soil carbon sequestration and land-use change: processes and potential. Glob Change Biol 6:317–327
Rumpel C, Kögel-Knabner I (2011) Deep soil organic matter—a key but poorly understood component of terrestrial C cycle. Plant Soil 338:143–158
Russell L (2019) emmeans: Estimated Marginal Means, aka Least-Squares Means
Sequeira CH, Wills SA, Seybold CA, West LT (2014) Predicting soil bulk density for incomplete databases. Geoderma 213:64–73
Team RC (2019) A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna
USDA (2020) The Conservation Reserve Program: A 35-Year History
Wertebach TM, Hölzel N, Kämpf I, Yurtaev A, Tupitsin S, Kiehl K, Kamp J, Kleinebecker T (2017) Soil carbon sequestration due to post-Soviet cropland abandonment: estimates from a large‐scale soil organic carbon field inventory. Glob Change Biol 23:3729–3741
Wickham H (2016) ggplot2: Elegant Graphics for Data Analysis. Springer-Verlag, New York
Wills S, Loecke T, Sequeira C, Teachman G, Grunwald S, West LT (2014) Overview of the U.S. Rapid Carbon Assessment Project: Sampling Design, Initial Summary and Uncertainty Estimates, Soil Carbon, pp. 95–104
Wills S, Sequeira C, Loecke T, Benham E, Ferguson R, Scheffe K, West L (2013a) Rapid Carbon Assessment (RaCA) Methodology Sampling and Initial Summary. United States Department of Agriculture. Natural Resources Conservation Service. Available online at http://www. nrcs. usda. gov/Internet/FSE_DOCUMENTS/nrcs142p2_052841. pdf
Wills S, Seybold C, Chiaretti J, Sequeira C, West L (2013b) Quantifying Tacit Knowledge about Soil Organic Carbon Stocks Using Soil Taxa and Official Soil Series Descriptions. Soil Sci Soc Am J 77:1711–1723