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 AS  Vol.12 No.10 , October 2021
New Algorithm of Clay CEC for Soils in Tropical and Subtropical Regions of South China
Abstract: Clay CEC is one of identification indexes of the LAC-ferric horizon which is the diagnostic horizon of ferrosols in Chinese Soil Taxonomy, and it is defined as soil CEC × 1000/clay content, rather than the measured CEC of the extracted clays; however, such a calculation method would definitely lead to an overestimation of clay CEC because it doesn’t remove the contribution to soil CEC from other soil parameters. In this study, the physiochemical data of the subhorizons from 82 soil series in the tropical and subtropical regions in south China were used, clay CEC was calculated according to the current formula and measured after clays being extracted, the measured and calculated clay CEC were compared, the influencing factors were analyzed for their difference, and the new algorithms were established for clay CEC. The results showed that the measured clay CEC was 21.86% - 99.53% with a mean of 66.88% of the calculated one (significantly lower at p < 0.01), and their difference was significantly correlated with the contents of clays, sand and OM, and mainly decided by the contents of clays and Fe2O3 (the contribution was 52.51% and 25.36%, respectively). By comparison of established regression models of clay CEC with other soil parameters, two new algorithms were recommended for clay CEC as follows: 1) Clay CEC = 10.32 &#8722; 0.14pH &#8722; 0.05OM &#8722; 0.11Fe2O3 + 0.01Silt &#8722; 0.01Clay + 1.17CECsoil, R2 = 0.705, P < 0.01; 2) Clay CEC = &#8722;3.40 + 0.01Sand + 0.02Silt + 1.05CECsoil, R2 = 0.589, P < 0.01).
Cite this paper: Kong, X. , Li, D. , Song, X. and Zhang, G. (2021) New Algorithm of Clay CEC for Soils in Tropical and Subtropical Regions of South China. Agricultural Sciences, 12, 1048-1057. doi: 10.4236/as.2021.1210067.
References

[1]   CRG-CST (2001) Chinese Soil Taxonomy. Science Press, Beijing.

[2]   Shi, X.Z., Chen, Z.C., Zhang, J.M., et al. (1995) Rationale for Concepts of Ferrisols, Luvisols and Cambisols in Chinese Soil Taxonomic Classification. Acta Pedologica Sinica, 32, 12-20. (In Chinese)

[3]   Zhao, W.J. and Chen, Z.C. (1995) Establishment of Ferrisol Order in Chinese Soil Taxonomic Classification. Acta Pedologica Sinica, 32, 21-33. (In Chinese)

[4]   Zhang, M.K. and Zhu, Z.X. (1993) Effect of Slits on Cation Exchange Capacity of Soils. Soils and Fertilizers, 4, 41-43. (In Chinese)

[5]   Yang, J.W., Wang, T.W., Bao, Y.Y., et al. (2021) Optimization of the Model for Predicting Cation Exchange Capacity of Clays. Acta Pedologica Sinica, 58, 514-525. (In Chinese)

[6]   Lu. Y. (2017) Soil Series of China. Guangdong Volume. Science Press, Beijing. (In Chinese)

[7]   Wang, T.W. and Chen, J.Y. (2020) Soil Series of China. Jiangxi Volume. Science Press, Beijing. (In Chinese)

[8]   Zhang, M.K. and Ma, W.C. (2017) Soil Series of China. Fujian Volume. Science Press, Beijing. (In Chinese)

[9]   Zhang, Y.Z., Zhou, Q., Sheng, H., et al. (2020) Soil Series of China. Hunan Volume. Science Press, Beijing. (In Chinese)

[10]   Ma, W.C. and Zhang, M.K. (2017) Soil Series of China. Zhejiang Volume. Science Press, Beijing. (In Chinese)

[11]   Huang, B. and Lu, S.G. (2020) Soil Series of China. Yunnan Volume. Science Press, Beijing. (In Chinese)

[12]   Qi, Z.P., Wang, D.F. and Wei, Z.Y. (2018) Soil Series of China. Hainan Volume. Science Press, Beijing. (In Chinese)

[13]   Lu, Y. and Wei, X.H. (2020) Soil Series of China. Guangxi Volume. Science Press, Beijing. (In Chinese)

[14]   Wang, T.W. (2017) Soil Series of China. Hubei Volume. Science Press, Beijing. (In Chinese)

[15]   Yuan, D.G. (2020) Soil Series of China. Sichuan Volume. Science Press, Beijing. (In Chinese)

[16]   Lu. Y. and Wei, X.H. (2020) Soil Series of China. Guangxi Volume. Science Press, Beijing. (In Chinese)

[17]   Zhang, G.L. and Gong, Z.T. (2012) Soil Survey Laboratory Methods. Science Press, Beijing. (In Chinese)

[18]   Soil Survey Staff (2014) Kellogg Soil Survey Laboratory Methods Manual. Soil Survey Investigations Report No. 42, Version 5.0. R. Burt and Soil Survey Staff (ed.). USDA & NRCS.

[19]   Bao, S.D. (2000) Analysis for Soil and Agro-Chemistry. 3rd Edition, China Agriculture Press, Beijing. (In Chinese)

[20]   Krogh, L.H., Breuning, M. and Greve, H.M. (2000) Cation-Exchange Capacity Pedotransfer Functions for Danish Soils. Acta Agriculturae Scandinavica Section B—Soil and Plant Science, 50, 1-12.
https://doi.org/10.1080/090647100750014358

[21]   Meghdadi, A. and Javar, N. (2018) Evaluation of Nitrate Sources and the Percent Contribution of Bacterial Denitrification in Hyporheic Zone Using Isotope Fractionation Technique and Multi-Linear Regression Analysis. Journal of Environmental Management, 222, 54-65.
https://doi.org/10.1016/j.jenvman.2018.05.022

[22]   Zhang, G., Liu, X., Lu, S., et al. (2020) Occurrence of Typical Antibiotics in Nansi Lake’s Inflowing Rivers and Antibiotic Source Contribution to Nansi Lake Based on Principal Component Analysis-Multiple Linear Regression Model. Chemosphere, 242, Article ID: 125269.
https://doi.org/10.1016/j.chemosphere.2019.125269

[23]   Xiong, Y. and Li, Q.K. (1990) Soil of China. 2nd Edition, Science Press, Beijing. (In Chinese)

[24]   Liao, K., Xu, S. and Zhu, Q. (2015). Development of Ensemble Pedotransfer Functions for Cation Exchange Capacity of Soils of Qingdao in China. Soil Use and Management, 31, 483-490.
https://doi.org/10.1111/sum.12207

[25]   Seybold, C.A., Grossman, R.B. and Reinsch, T.G. (2005) Predicting Cation Exchange Capacity for Soil Survey Using Linear Models. Soil Science Society of America Journal, 69, 856-863.
https://doi.org/10.2136/sssaj2004.0026

[26]   Oorts, K., Vanlauwe, B. and Merckx, R. (2003) Cation Exchange Capacities of Soil Organic Matter Fractions in A Ferric Lixisol with Different Organic Matter Inputs. Agriculture, Ecosystems & Environment, 100, 161-171.
https://doi.org/10.1016/S0167-8809(03)00190-7

[27]   Meyer, W.L., Marsh, M. and Arp, P.A. (1994) Cation Exchange Capacities of Upland Soils in Eastern Canada. Canadian Journal of Soil Science, 74, 393-408.
https://doi.org/10.4141/cjss94-053

[28]   Zhao, J.H., Xu, B.Y., Zhao, J.J., et al. (2019). Distribution Characteristics of Soil Cation Exchange Capacity in Haxi Forest of Qilian Mountains, Gansu Province. Forest Science and Technology, 6, 41-43. (In Chinese)

[29]   Shekofteh, H., Ramazani, F. and Shirani, H. (2017) Optimal Feature Selection for Predicting Soil CEC: Comparing the Hybrid of Ant Colony Organization Algorithm and Adaptive Network-Based Fuzzy System with Multiple Linear Regression. Geoderma, 298, 27-34.
https://doi.org/10.1016/j.geoderma.2017.03.010

[30]   Zhang, Q., Fang, H.L., Huang, Y.Z., et al. (2005) Application of Soil CEC to Evaluation of Soil Quality in Shanghai. Soils, 37, 679-682. (In Chinese)

[31]   Li, Y., Hao, Z.K., Shi, Q., et al. (2020) Distribution Characteristics of Soil pH, Cation Exchange Capacity and Organic Matter in the Area of Western Heilongjiang Province. Protection Forest Science and Technology, No. 4, 20-22. (In Chinese)

[32]   Khodaverdiloo, H., Momtaz, H. and Liao, K.H. (2018) Performance of Soil Cation Exchange Capacity Pedotransfer Function as Affected by the Inputs and Database Size. Clean-Soil Air Water, 46, Article ID: 1700670.
https://doi.org/10.1002/clen.201700670

[33]   Seyedmohammadi, J. and Matinfar, H.R. (2018) Statistical and Geostatistical Techniques for Geospatial Modeling of Soil Cation Exchange Capacity. Communications in Soil Science and Plant Analysis, 49, 2301-2314.
https://doi.org/10.1080/00103624.2018.1499765

[34]   Manrique, L.A., Jones, C.A. and Dyke, P.T. (1991) Predicting Cation-Exchange Capacity from Soil Physical and Chemical Properties. Soil Science Society of America Journal, 55, 787-794.
https://doi.org/10.2136/sssaj1991.03615995005500030026x

[35]   Obalum, S.E., Watanabe, Y., Igwe, C.A., et al. (2013) Improving on the Prediction of Cation Exchange Capacity for Highly Weathered and Structurally Contrasting Tropical Soils from Their Fine-Earth Fractions. Communications in Soil Science and Plant Analysis, 44, 1831-1848.
https://doi.org/10.1080/00103624.2013.790401

[36]   Rahal, N.S. and Alhumairi, B.A.J. (2019) Modelling of Soil Cation Exchange Capacity for Some Soils of East Gharaf Lands from Mid-Mesopotamian Plain (Wasit Province/Iraq). International Journal of Environmental Science and Technology, 16, 3183-3192.
https://doi.org/10.1007/s13762-018-1913-6

[37]   Khaledian, Y., Brevik, E.C., Pereira, P., et al. (2017). Modeling Soil Cation Exchange Capacity in Multiple Countries. Catena, 158, 194-200.
https://doi.org/10.1016/j.catena.2017.07.002

[38]   Hu, G.C. and Zhang, M.K. (2002) Mineralogical Evidence for Strong Cementation of Soil Particles by Iron Oxides. Chinese Journal of Soil Science, 33, 25-27. (In Chinese)

[39]   Martín-García, J.M., Sánchez-Marañón, M., Calero, J., et al. (2016) Iron Oxides and Rare Earth Elements in the Clay Fractions of a Soil Chronosequence in Southern Spain. European Journal of Soil Science, 67, 749-762.
https://doi.org/10.1111/ejss.12377

[40]   Silva, L.S., Júnior, J.M., Barrón, V., et al. (2020). Spatial Variability of Iron Oxides in Soils from Brazilian Sandstone and Basalt. Catena, 185, Article ID: 104258.
https://doi.org/10.1016/j.catena.2019.104258

[41]   Soares, M.R. and Alleoni, L.R.F. (2008) Contribution of Soil Organic Carbon to the Ion Exchange Capacity of Tropical Soils. Journal of Sustainable Agriculture, 32, 439-462.
https://doi.org/10.1080/10440040802257348

 
 
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