Abstract
Purpose
Transferring CO2 to soil organic carbon (SOC) is an important carbon sequestration mechanism that may mitigate global climate change. Grasslands can preserve 10–30% of total SOC stock. This study investigated the contribution of different soil particle-size fractions to SOC sequestration in grasslands, which play an important role for stabilization of SOC.
Materials and methods
Soil layers at 0–10, 10–20, 20–40, and 40–60 cm were sampled from meadow steppe, typical steppe and desert steppe in Inner Mongolia, northern China in July and August, 2016. Bulk soils were fractionated by wet-sieving method to investigate SOC stock in different particle-size fractions. SOC was determined with ElementarVario MAX CNS analyzer after removing soil inorganic C.
Results and discussion
The SOC stock in 0–60 cm depth was 163.0 Mg C ha−1 in typical steppe soils, 127.3 Mg C ha−1 in meadow steppe and 44.4 Mg C ha−1 in desert steppe. The silt (2–53 μm) and clay (< 2 μm) fractions accounted for 62.2 and 19.2% in meadow steppe, 35.3 and 12.7% in typical steppe, 12.2 and 6.6% in desert steppe of total soil mass. The SOC stock in silt and clay fractions accounted for 59.8 and 32.0% of total SOC stock in meadow steppe, 58.9 and 19.8% in typical steppe, and 43.9 and 28.2% in desert steppe, respectively. The SOC concentration and stock were positively correlated with mean annual precipitation (MAP) and negatively correlated with mean annual temperature (MAT). Our study demonstrated that climatic factors and soil texture are main reasons for the difference of SOC stocks among three grassland types.
Conclusions
The distribution of soil particle-size fraction and its associated organic C showed distinct variations under three grassland types in Inner Mongolia. Management practices, such as changing grazing intensity in three grassland types, are important for the sustainable use of grasslands.
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References
Allison SD, Jastrow JD (2006) Activities of extracellular enzymes in physically isolated fractions of restored grassland soils. Soil Biol Biochem 38:3245–3256
Amelung W, Zech W, Zhang X, Follett RF, Tiessen H, Knox E, Flach KW (1998) Carbon, nitrogen, and sulfur pools in particle-size fractions as influenced by climate. Soil Sci Soc Am J 62:172–181
Balesdent J, Besnard E, Arrouays D, Chenu C (1998) The dynamics of carbon in particle-size fractions of soil in a forest-cultivation sequence. Plant Soil 201:49–57
Batjes NH (2016) Harmonized soil property values for broad-scale modelling (wise30sec) with estimates of global soil carbon stocks. Geoderma 269:61–68
Breulmann M, Boettger T, Buscot F, Gruendling R, Schulz E (2016) Carbon stock potential in size-density fractions from semi-natural grassland ecosystems with different productivities over varying soil depths. Sci Total Environ 545:30–39
Christensen BT (1992) Physical fractionation of soil and organic matter in primary particle size and density separates. Springer, New York, pp 1–90
Christensen BT (2001) Physical fractionation of soil and structural and functional complexity in organic matter turnover. Eur J Soil Sci 52:345–353
Dixon AP, Faber-Langendoen D, Josse C, Morrison J, Loucks CJ (2014) Distribution mapping of world grassland types. J Biogeogr 41:2003–2019
Eswaran H, Berg EVD, Reich P (1993) Organic carbon in soils of the world. Soil Sci Soc Am J 90:192–194
Follett RF, Stewart CE, Pruessner EG, Kimble JM (2012) Effects of climate change on soil carbon and nitrogen stock in the US Great Plains. J Soil Water Conserv 67:331–342
Han GL, Li FS, Tang Y (2015) Variations in soil organic carbon contents and isotopic compositions under different land uses in a typical karst area in Southwest China. Geochem J 49:63–71
He NP, Wang RM, Zhang YH, Chen QS (2014) Carbon and nitrogen stock in Inner Mongolian grasslands: relationships with climate and soil texture. Pedosphere 24:391–398
He X, Ma WH, Liang CZ, Hong M, Chai X, Zhao B, Zhang YP, Yang SH, Zhang JX (2015) Effects of nutrient additions on community biomass varied among different grassland ecosystems of Inner Mongolia. Acta Sci Natur Univ Pekinensis. https://doi.org/10.13209/j.0479-8023.2015.090
Ji Z, Yang XM, Song ZL, Liu HY, Liu X, Qiu S, Li J, Guo FS, Wu YT, Zhang XD (2017) Silicon distribution in meadow steppe and typical steppe of northern China and its implications for phytolith carbon sequestration. Grass Forage Sci. https://doi.org/10.1111/gfs.12316
Jolivet C, Arrouays D, Lévèque J, Andreux F, Chenu C (2003) Organic carbon dynamics in soil particle-size separates of sandy Spodosols when forest is cleared for maize cropping. Eur J Soil Sci 54:257–268
Li S, Verburg PH, Lv S, Wu J, Li X (2012) Spatial analysis of the driving factors of grassland degradation under conditions of climate change and intensive use in Inner Mongolia, China. Reg Envrion Change 12:461–474
Li Y, Zhang J, Chang SX, Jiang P, Zhou G, Fu S, Yan E, Wu J, Lin L (2014) Long-term intensive management effects on soil organic carbon pools and chemical composition in Moso bamboo (Phyllostachys pubescens) forests in subtropical China. Forest Ecol Manag 303:121–130
Liao GF, Jia YL (1996) Rangeland resources of China. China Science and Technology Press, Beijing (in Chinese)
Liu GS, Jiang NH, Zhang LD, Liu ZL (1996) Soil physical and chemical analysis and description of soil profiles, vol 24. China Standards Methods Press, Beijing, pp 33–38 (in Chinese)
Lützow M, Kogel-Knabner I, Ekschmitt K, Flessa H, Guggenberger G, Matzner E, Marschner B (2007) SOM fractionation methods: relevance to functional pools and to stabilization mechanisms. Soil Biol Biochem 39:2183–2207
Luyssaert S, Schulze ED, Börner A, Knohl A, Hessenmöller D, Law BE, Ciais P, Grace J (2008) Old-growth forests as global carbon sinks. Nature 455:213–215
Ma WH, Yang YH, He JS, Zeng H, Fang JY (2008) Above- and belowground biomass in relation to environmental factors in temperate grasslands, Inner Mongolia. Sci China Ser C 51:263–270
Mayer LM (1994) Relationships between mineral surfaces and organic carbon concentrations in soils and sediments. Chem Geol 114:347–363
Midwood AJ, Boutton TW (1998) Soil carbonate decomposition by acid has little effect on delta 13C of organic matter. Soil Biol Biochem 30:1301–1307
Miller AJ, Amundson R, Burke IC, Yonker C (2004) The effect of climate and cultivation on soil organic C and N. Biogeochemistry 67:57–72
Parr J, Sullivan L, Chen BH, Ye GF, Zheng WP (2010) Carbon bio-sequestration within the phytoliths of economic bamboo species. Glob Chang Biol 16:2661–2667
Paustian K, Andrén O, Janzen HH, Lal R, Smith P, Tian G, Tiessen H, Van Noordwijk M, Woomer PL (2010) Agricultural soils as a sink to mitigateCO2 emissions. Soil Use Manag 13(s4):230–244
Shang SY, Jiang PK, Chang SX, Song ZL, Liu J, Sun L (2014) Soil organic carbon in particle size and density fractionations under four forest vegetation-land use types in subtropical China. Forests 5:1391–1408
Song ZL, Zhao SL, Zhang YZ, Hu GL, Cao ZH, Wong MH (2011) Plant impact on CO2 consumption by silicate weathering: the role of bamboo. Bot Rev 77:208–213
Song ZL, Liu HY, Si Y, Yin Y (2012) The production of phytoliths in China's grasslands: implications to the biogeochemical sequestration of atmospheric CO2. Glob Chang Biol 18:3647–3653
Spackman LK, Munn LC (1984) Genesis and morphology of soils associated with formation of Laramie Basin (Mima-like) mounds in Wyomin. Soil Sci Soc Am J 48(6):1384–1392
Stemmer M, Gerzabek MH, Kandeler E (1998) Organic matter and enzyme activity in particle-size fraction of soils obtained after low-energy sonication. Soil Biol Biochem 30:9–17
Tian Z, Wu XQ, Xie R, Huang Y (2014) Comparison of soil organic carbon density of main grassland types in Inner Mongolia. Sswcc 12:8–13
Wang XG, Sistla SA, Wang XB, Lv XT, Han XG (2016) Carbon and nitrogen stocks in particle-size fractions of topsoil along a 3000km aridity gradient in northern China. Biogeosci Discuss 65:1–30
White RP, Murray S, Rohweder M (2000) Grassland ecosystems. Pilot analysis of global ecosystems. World Res Inst 4:275
Wu JG, Overton C (2002) Asian ecology: pressing problems and research challenges. Bull Ecol Soc Am 83:189–194
Yan YC, Xin XP, Xu XL, Wang X, Yang GX, Yan RR, Chen BR (2013) Quantitative effects of wind erosion on the soil texture and soil nutrients under different vegetation coverage in a semiarid steppe of northern china. Plant Soil 369(1–2):585–598
Yang Y, Fang J, Ma WH, Smith P, Mohammat A, Wang SP, Wang W (2010) Soil carbon stock and its changes in northern China’s grasslands from 1980s to 2000s. Glob Chang Biol 16:3036–3047
Yonekura Y, Ohta S, Kiyono Y, Aksa D, Morisada K, Tanaka N, Tayasu I (2013) Soil organic matter dynamics in density and particle-size fractions following destruction of tropical rainforest and the subsequent establishment of Imperata, grassland in Indonesian Borneo using stable carbon isotopes. Plant Soil 372:683–699
Zeraatpishe M, Khormali F (2012) Carbon stock and mineral factors controlling soil organic carbon in a climatic gradient, Golestan province. J Soil Sci Plant Nutr 12:637–654
Zhang JJ, Li YF, Chang SX, Jiang PK, Zhou GM, Liu J, Wu JS, Shen ZM (2014) Understory vegetation control affected greenhouse gas emissions and labile organic carbon pools in an intensively managed Chinese chestnut plantation. Plant Soil 376:363–375
Zhu SF, Liu CQ (2006) Vertical patterns of stable carbon isotope in soils and particle-size fractions of karst areas, Southwest China. Environ Geol 50:1119–1127
Acknowledgements
This work was supported jointly by the National Natural Science Foundation of China (41522207; 41571130042) and the State’s Key Project of Research and Development Plan of China (2016YFA0601002). We thank Laboratory of Surficial Environment Geochemistry for help in measuring samples.
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Xu, Z., Li, Z., Liu, H. et al. Soil organic carbon in particle-size fractions under three grassland types in Inner Mongolia, China. J Soils Sediments 18, 1896–1905 (2018). https://doi.org/10.1007/s11368-018-1951-1
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DOI: https://doi.org/10.1007/s11368-018-1951-1