Plant Soil Environ., 2019, 65(5):253-259 | DOI: 10.17221/602/2018-PSE

Soil organic carbon sequestration in soil aggregates in the karst Critical Zone Observatory, Southwest ChinaOriginal Paper

Man Liu1, Guilin Han*,1, Zichuan Li2, Qian Zhang3, Zhaoliang Song2
1 Instituteof Earth Sciences, China University of Geosciences, Beijing, P.R. China
2 Instituteof Surface-Earth System Science, Tianjin University, Tianjin, P.R. China
3 School of Water Resources and Environment, China University of Geosciences, Beijing, P.R. China

Soil organic carbon (SOC) sequestration in aggregates under land use change have been widely concerned due to intimate impacts on the sink (or source) of atmospheric carbon dioxide (CO2). However, the quantitative relationship between soil aggregation and SOC sequestration under land uses change has been poorly studied. Distribution of aggregates, SOC contents in bulk soils and different size aggregates and their contributions to SOC sequestration were determined under different land uses in the Puding Karst Ecosystem Observation and Research Station, karst Critical Zone Observatory (CZO), Southwest China. Soil aggregation and SOC sequestration increased in the processes of farmland abandonment and recovery. SOC contents in micro-aggregates were larger than those in macro-aggregates in restored land soils, while the opposite results in farmland soils were obtained, probably due to the hindrance of the C-enriched SOC transport from macro-aggregate into micro-aggregate by the disturbance of agricultural activities. SOC contents in macro-aggregates exponentially increased with their proportions along successional land uses. Macro-aggregates accounted for over 80% on the SOC sequestration in restored land soils, while they accounted for 31-60% in farmland soils. These results indicated that macro-aggregates have a great potential for SOC sequestration in karst soils.

Keywords: soil nutrition decline; carbon cycling; agricultural management; calcareous soil; karst small watershed

Published: May 31, 2019  Show citation

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Liu M, Han G, Li Z, Zhang Q, Song Z. Soil organic carbon sequestration in soil aggregates in the karst Critical Zone Observatory, Southwest China. Plant Soil Environ. 2019;65(5):253-259. doi: 10.17221/602/2018-PSE.
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    References

    1. Chaopricha N.T., Marín-Spiotta E. (2014): Soil burial contributes to deep soil organic carbon storage. Soil Biology and Biochemistry, 69: 251-264. Go to original source...
    2. Choudhury S.G., Srivastava S., Singh R., Chaudhari S.K., Sharma D.K., Singh S.K., Sarkar D. (2014): Tillage and residue management effects on soil aggregation, organic carbon dynamics and yield attribute in rice-wheat cropping system under reclaimed sodic soil. Soil and Tillage Research, 136: 76-83. Go to original source...
    3. Clough A., Skjemstad J.O. (2000): Physical and chemical protection of soil organic carbon in three agricultural soils with different contents of calcium carbonate. Australian Journal of Soil Research, 38: 1005-1016. Go to original source...
    4. DeGryze S., Six J., Paustian K., Morris S.J., Paul E.A., Merckx R. (2004): Soil organic carbon pool changes following land-use conversions. Global Change Biology, 10: 1120-1132. Go to original source...
    5. Dungait J.A.J., Hopkins D.W., Gregory A.S., Whitmore A.P. (2012): Soil organic matter turnover is governed by accessibility not recalcitrance. Global Change Biology, 18: 1781-1796. Go to original source...
    6. Han G.L., Li F.S., Tang Y. (2015): Variations in soil organic carbon contents and isotopic compositions under different land uses in a typical karst area in Southwest China. Geochemical Journal, 49: 63-71. Go to original source...
    7. Han G.L., Li F.S., Tang Y. (2017): Organic matter impact on distribution of rare earth elements in soil under different land uses. CLEAN - Soil, Air, Water, 45: 1600235. Go to original source...
    8. John B., Yamashita T., Ludwig B., Flessa H. (2005): Storage of organic carbon in aggregate and density fractions of silty soils under different types of land use. Geoderma, 128: 63-79. Go to original source...
    9. Liao H.K., Long J., Li J. (2016): Conversion of cropland to Chinese prickly ash orchard affects soil organic carbon dynamics in a karst region of southwest China. Nutrient Cycling in Agroecosystems, 104: 15-23. Go to original source...
    10. Liu M., Han G.L., Li Z.C., Liu T.Z., Yang X.M., Wu Y.T., Song Z.L. (2017): Effects of slope position and land use on the stability of aggregate-associated organic carbon in calcareous soils. Acta Geochimica, 36: 456-461. Go to original source...
    11. Manzoni S., Porporato A. (2011): Common hydrologic and biogeochemical controls along the soil-stream continuum. Hydrologi
    12. Midwood A.J., Boutton T.W. (1998): Soil carbonate decomposition by acid has little effect on δ13C of organic matter. Soil Biology and Biochemistry, 30: 1301-1307. Go to original source...
    13. Ni J., Wang S.J., Liu L.B., Cai X.L., Cheng A., Peng T., Li T.Y., Hu G., Zhang Z.H., Zhou Y.C., Guo K., Liu C.C., Bai X.Y., Liu X.M., Luo W.J., Zhang L., Wu Y.Y., Li M.D., Guo C.Z., Xu H.Y., Zhong Q.L., Guo Y.M., Yang H.M., Xu X., Yang Y. (2017): Establishment and monitoring of biological plots at Puding Karst Ecosystem Research Station. Earth and Environment, 45: 106-113. (In Chinese)
    14. Rittl T.F., Oliveira D., Cerri C.E.P. (2017): Soil carbon stock changes under different land uses in the Amazon. Geoderma Regional, 10: 138-143. Go to original source...
    15. Six J., Bossuyt H., Degryze S., Denef K. (2004): A history of research on the link between (micro) aggregates, soil biota, and soil organic matter dynamics. Soil and Tillage Research, 79: 7-31. Go to original source...
    16. Six J., Elliott E.T., Paustian K. (2000): Soil macroaggregate turnover and microaggregate formation: A mechanism for C sequestration under no-tillage agriculture. Soil Biology and Biochemistry, 32: 2099-2103. Go to original source...
    17. Spohn M., Giani L. (2011): Impacts of land use change on soil aggregation and aggregate stabilizing compounds as dependent on time. Soil Biology and Biochemistry, 43: 1081-1088. Go to original source...
    18. Tommaso C., Emanuele B., Guido P., Lucia P., Vincenza C.M., Riccardo V. (2018): Soil organic carbon pool's contribution to climate change mitigation on marginal land of a Mediterranean montane area in Italy. Journal of Environmental Management, 218: 593-601. Go to original source... Go to PubMed...
    19. Wang S.J., Liu Q.M., Zhang D.F. (2004): Karst rocky desertification in southwestern China: Geomorphology, landuse, impact and rehabilitation. Land Degradation and Development, 15: 115-121. Go to original source...
    20. Zhao F.Z., Han X.H., Yang G.H., Feng Y.Z., Ren G.X. (2014): Soil structure and carbon distribution in subsoil affected by vegetation restoration. Plant, Soil and Environment, 60: 21-26. Go to original source...
    21. Zhao M., Zeng C., Liu Z.H., Wang S.J. (2010): Effect of different land use/land cover on karst hydrogeochemistry: A paired catchment study of Chenqi and Dengzhanhe, Puding, Guizhou, SW China. Journal of Hydrology, 388: 121-130. Go to original source...

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