Articles | Volume 12, issue 2
https://doi.org/10.5194/soil-12-791-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/soil-12-791-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Original research article
| 
28 Jul 2026
Original research article |
| 28 Jul 2026
| 28 Jul 2026
The pH and available phosphorus as primary drivers of compost-induced CO2 emissions from Malaysian tropical soil: empirical relationships
Xingxing Cheng
Department of Civil Engineering, Faculty of Engineering, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
Faridah Othman
Department of Civil Engineering, Faculty of Engineering, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
Rosazlin Abdullah
Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
Department of Civil Engineering, Faculty of Engineering, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
Cited articles
Allison, L. E.: Diagnosis and improvement of saline and alkali soils, USDA Handbook, 60, 82–92, 1954.
Amelung, W., Bossio, D., de Vries, W., Kögel-Knabner, I., Lehmann, J., Amundson, R., Bol, R., Collins, C., Lal, R., Leifeld, J., Minasny, B., Pan, G., Paustian, K., Rumpel, C., Sanderman, J., van Groeningen, J. W., Mooney, S., van Wesemael, B., Wander, M., and Chabbi, A.: Towards a global-scale soil climate mitigation strategy, Nat. Commun., 11, 5427, https://doi.org/10.1038/s41467-020-18887-7, 2020.
Aye, N. S., Butterly, C. R., Sale, P. W. G., and Tang, C.: Residue addition and liming history interactively enhance mineralization of native organic carbon in acid soils, Biol. Fertil. Soils, 53, 61–75, https://doi.org/10.1007/s00374-016-1156-y, 2017.
Bai, X. X., Tang, J., Wang, W., Ma, C., and Shi, L.: Organic amendment effects on cropland soil organic carbon and its implications: A global synthesis, Catena, 231, 107343, https://doi.org/10.1016/j.catena.2023.107343, 2023.
Bai, Z., Caspari, T., Ruiperez Gonzalez, M., Batjes, N. H., Mäder, P., Bünemann, E. K., de Goede, R., Brussaard, L., Xu, M., Santos Ferreira, C. S., Reintam, E., Fan, H., Mihelič, R., Glavan, M., and Tóth, Z.: Effects of agricultural management practices on soil quality: A review of long-term experiments for Europe and China, Agr. Ecosyst. Environ., 265, 1–7, https://doi.org/10.1016/j.agee.2018.05.028, 2018.
Bardgett, R. D., Bullock, J. M., Lavorel, S., Manning, P., Schaffner, U., Ostle, N., Chomel, M., Durigan, G., Fry, E. L., Johnson, D., Lavallee, J. M., Le Provost, G., Luo, S., Png, K., Sankaran, M., Shi, X., Shen, R., and van der Plas, F.: Combatting global grassland degradation, Nat. Rev. Earth Environ., 2, 720–735, https://doi.org/10.1038/s43017-021-00207-2, 2021.
Bernard, L., Basile-Doelsch, I., Derrien, D., Fanin, N., Fontaine, S., Guenet, B., Karimi, B., Marsden, C., and Maron, P. A.: Advancing the mechanistic understanding of the priming effect on soil organic matter mineralisation, Funct. Ecol., 36, 1355–1377, https://doi.org/10.1111/1365-2435.14038, 2022.
Bolinder, M. A., Crotty, F., Elsen, A., Frac, M., Kismányoky, T., Lipiec, J., Tits, M., and Tóth, Z.: The effect of crop residues, cover crops, manures and nitrogen fertilization on soil organic carbon changes in agroecosystems: a synthesis of reviews, Mitig. Adapt. Strateg. Glob. Change, 25, 929–952, https://doi.org/10.1007/s11027-020-09916-3, 2020.
Bong, C. P. C., Lim, L. Y., Lee, C. T., Klemeš, J. J., Ho, C. S., and Ho, W. S.: The characterisation and treatment of food waste for improvement of biogas production during anaerobic digestion – A review, J. Clean. Product., 172, 1545–1558, https://doi.org/10.1016/j.jclepro.2017.10.199, 2018.
Chapman, H. D.: Cation exchange capacity, in: Methods of Soil Analysis, Part 2, Agronomy Monograph No. 9, edited by: Black, C. A., American Society of Agronomy, Madison, WI, 891–901, https://doi.org/10.2134/agronmonogr9.2.c6, 1965.
Chen, J., Luo, Y., van Groenigen, K. J., Hungate, B. A., Cao, J., Zhou, X., and Wang, R.: A keystone microbial enzyme for nitrogen control of soil carbon storage, Sci. Adv., 4, eaaq1689, https://doi.org/10.1126/sciadv.aaq1689, 2018.
Chen, J., Seven, J., Zilla, T., Dippold, M. A., Blagodatskaya, E., and Kuzyakov, Y.: Microbial C:N:P stoichiometry and turnover depend on nutrients availability in soil: A 14C, 15N and 33P triple labelling study, Soil Biol. Biochem., 131, 206–216, https://doi.org/10.1016/j.soilbio.2019.01.017, 2019.
Cheng, X., Onn, C. C., Othman, F., Abdullah, R., Guo, W., Gunn, P. F. E., and Yue, L.: Impact of biochars on CO2 emissions and physico-chemical properties in Malaysian tropical soils: Factor analysis and weighted contribution, J. Environ. Sci., 158, 84–97, https://doi.org/10.1016/j.jes.2025.03.002, 2025.
Cheng, X., Onn, C. C., Rosazlin, A., and Faridah, O.: The pH and available phosphorus as primary drivers of compost-induced CO2 emissions from malaysian tropical soil: empirical relationships [Dataset], Zenodo [data set], https://doi.org/10.5281/zenodo.20454193, 2026.
Cho, H. N., Shin, M., Lee, I., Ryoo, H., Acharya, B. S., Park, J. H., Cheong, Y. H., Cho, J. S., and Kang, S. W.: Impact of biochar and compost amendment on corn yield and greenhouse gas emissions under waterlogged conditions, Appl. Biol. Chem., 66, 87, https://doi.org/10.1186/s13765-023-00845-8, 2023.
Cotrufo, M. F., Wallenstein, M. D., Boot, C. M., Denef, K., and Paul, E. A.: The Microbial Efficiency-Matrix Stabilization (MEMS) framework integrates plant litter decomposition with soil organic matter stabilization: do labile plant inputs form stable soil organic matter, Global Change. Biol., 19, 988–995, https://doi.org/10.1111/gcb.12113, 2013.
Estefan, G., Sommer, R., and Ryan, J.: Methods of Soil, Plant, and Water Analysis, in: 3rd Edn., ICARDA – International Center for Agricultural Research in the Dry Areas, Beirut, https://hdl.handle.net/20.500.11766/7512 (last access: 24 July 2026), 2013.
Fierer, N. and Jackson, R. B.: The diversity and biogeography of soil bacterial communities, P. Natl. Acad. Sci. USA, 103, 626–631, https://doi.org/10.1073/pnas.0507535103, 2006.
Gu, B., Qin, T., Qiu, M., Yu, J., Zhang, L., Li, Y., and Hatano, R.: Addition of exogenous organic ameliorants mediates soil bacteriome and microbial community carbon source utilization pattern in coastal saline-alkaline soil, Agriculture, 14, 44, https://doi.org/10.3390/agriculture14010044, 2024.
Gurmessa, B., Cocco, S., Ashworth, A. J., Udawatta, R. P., Cardelli, V., Serrani, D., Ilari, A., Foppa Pedretti, E., Fornasier, F., and Corti, G.: Enzyme activities and microbial nutrient limitations in response to digestate and compost additions in organic matter poor soils in the Marches, Italy, Soil Till. Res., 242, 106136, https://doi.org/10.1016/j.still.2024.106136, 2024.
Hayashi, R., Maie, N., Wagai, R., Hirano, Y., Matsuda, Y., Okamoto, T., Wada, R., and Tanikawa, T.: Soil acidity accelerates soil organic matter decomposition in Cryptomeria japonica stands and Chamaecyparis obtusa stands, Plant Soil, 494, 627–649, https://doi.org/10.1007/s11104-023-06308-9, 2024.
Helmke, P. A. and Sparks, D. L.: Lithium, sodium, potassium, rubidium, and cesium, in: Methods of Soil Analysis, Part 3 – Chemical Methods, SSSA Book Series No. 5, edited by: Sparks, D. L., Soil Science Society of America, Madison, WI, 551–574, https://doi.org/10.2136/sssabookser5.3.c19, 1996.
Huang, X. L., Jia, Z. X., Jiao, X. Y., Wang, J. L., and Huang, X. F.: Long-term manure applications to increase carbon sequestration and macroaggregate-stabilized carbon, Soil Biol. Biochem., 174, 108827, https://doi.org/10.1016/j.soilbio.2022.108827, 2022.
IPCC: Climate Change 2022: Mitigation of Climate Change, in: Contribution of Working Group III to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, UK and New York, NY, USA, https://doi.org/10.1017/9781009157926, 2022.
Kuzyakov, Y., Friedel, J. K., and Stahr, K.: Review of mechanisms and quantification of priming effects, Soil Biol. Biochem., 32, 1485–1498, https://doi.org/10.1016/S0038-0717(00)00084-5, 2000.
Lacroix, E. M., Rossi, R. J., Bossio, D., and Fendorf, S. E.: Effects of moisture and physical disturbance on pore-scale oxygen content and anaerobic metabolisms in upland soils, Sci. Total Environ., 780, 146572, https://doi.org/10.1016/j.scitotenv.2021.146572, 2021.
Laffely, A., Erich, M. S., and Ohno, T.: Dissolved organic carbon chemical composition controls the rate of CO2 release from rewetted soil, Soil Sci. Soc. Am. J., 84, 483–493, https://doi.org/10.1002/saj2.20035, 2020.
Lal, R.: Soil carbon sequestration impacts on global climate change and food security, Science, 304, 1623–1627, https://doi.org/10.1126/science.1097396, 2004.
Lanno, M., Kriipsalu, M., Shanskiy, M., Silm, M., and Kisand, A.: Distribution of Phosphorus Forms Depends on Compost Source Material, Resources, 10, 102, https://doi.org/10.3390/resources10100102, 2021.
Lehmann, J., Hansel, C. M., Kaiser, C., Kleber, M., Maher, K., Manzoni, S., Nunan, N., Reichstein, M., Schimel, J. P., Torn, M. S., Wieder, W. R., and Kögel-Knabner, I.: Persistence of soil organic carbon caused by functional complexity, Nat. Geosci., 13, 529–534, https://doi.org/10.1038/s41561-020-0612-3, 2020.
Li, J., Sang, C., Yang, J., Qu, L., Xia, Z., Sun, H., Jiang, P., Wang, X., He, H., and Wang, C.: Stoichiometric imbalance and microbial community regulate microbial elements use efficiencies under nitrogen addition, Soil Biol. Biochem., 156, 108207, https://doi.org/10.1016/j.soilbio.2021.108207, 2021.
Li, Y., Wu, L., Tang, L., Ren, F., Wang, X., Zhu, P., Sun, N., and Xu, M.: Manure application decreases soil organic carbon priming by increasing mineral protection and nitrogen availability, Geoderma, 439, 116676, https://doi.org/10.1016/j.geoderma.2023.116676, 2023.
Lipper, L., Thornton, P., Campbell, B. M., Baedeker, T., Braimoh, A., Bwalya, M., Caron, P., Cattaneo, A., Garrity, D., Henry, K., Hottle, R., Jackson, L., Jarvis, A., Kossam, F., Mann, W., McCarthy, N., Meybeck, A., Neufeldt, H., Remington, T., Sen, P. T., Sessa, R., Shula, R., Tibu, A., and Torquebiau, E. F.: Climate-smart agriculture for food security, Nat. Clim. Change, 4, 1068–1072, https://doi.org/10.1038/nclimate2437, 2014.
Liu, H. M., Zhou, G. Y., Zhou, X. H., Zhou, Y. S., Jiang, Q., and Guo, D. L.: Differential response of soil respiration to nitrogen and phosphorus addition in a highly phosphorus-limited subtropical forest, China, Forest Ecol. Manage., 448, 499–508, https://doi.org/10.1016/j.foreco.2019.06.020, 2019.
Mao, X., Sun, T., Zhu, L., Wanek, W., Cheng, Q., Wang, X., Zhou, J., Liu, X., Ma, Q., Wu, L., and Jones, D. L.: Microbial adaption to stoichiometric imbalances regulated the size of soil mineral-associated organic carbon pool under continuous organic amendments, Geoderma, 445, 116883, https://doi.org/10.1016/j.geoderma.2024.116883, 2024.
McFarlane, K. J., Cusack, D. F., Dietterich, L. H., Hedgpeth, A. L., Finstad, K. M., and Nottingham, A. T.: Experimental warming and drying increase older carbon contributions to soil respiration in lowland tropical forests, Nat. Commun., 15, 7084, https://doi.org/10.1038/s41467-024-51422-6, 2024.
Montgomery, D. C., Peck, E. A., and Vining, G. G.: Introduction to Linear Regression Analysis, in: 6th Edn., John Wiley & Sons, Hoboken, NJ, USA, ISBN: 978-1-119-57872-7, 2021.
Mulvaney, R. L.: Nitrogen – inorganic forms, in: Methods of Soil Analysis, Part 3 – Chemical Methods, SSSA Book Series No. 5, edited by: Sparks, D. L., Soil Science Society of America, Madison, WI, 1123–1184, https://doi.org/10.2136/sssabookser5.3.c38, 1996.
Niu, J., Saeed, Q., Wang, W., Zhang, R., Liu, L., Lv, F., Xu, J., Han, Y., Zhang, P., Hu, C., Xu, H., Sun, B., Yang, X., and Zhang, S.: Manure replacing synthetic fertilizer improves crop yield sustainability and reduces carbon footprint under winter wheat–summer maize cropping system, J. Environ. Manage., 358, 120936, https://doi.org/10.1016/j.jenvman.2024.120936, 2024.
Oldfield, E. E., Bradford, M. A., and Wood, S. A.: Global meta-analysis of the relationship between soil organic matter and crop yields, SOIL, 5, 15–32, https://doi.org/10.5194/soil-5-15-2019, 2019.
Oldfield, E. E., Lavallee, J. M., Blesh, J., Bradford, M. A., Cameron-Harp, M., Cotrufo, M. F., Eagle, A. J., Eash, L., Even, R. J., Kuebbing, S. E., Kort, E. A., Lark, T. J., Latka, C., Lin, Y., Machmuller, M. B., O'Neill, B., Raffeld, A. M., RoyChowdhury, T., Rudek, J., Sanderman, J., Sprunger, C. D., Toombs, T. P., Uludere Aragon, N., Vidal, M., Woolf, D., Zelikova, T. J., and Gordon, D. R.: Greenhouse gas mitigation on croplands: clarifying the debate on knowns, unknowns and risks to move forward with effective management interventions, Carbon Manage., 15, 1–12, https://doi.org/10.1080/17583004.2024.2365896, 2024.
Oliver, D. P., Li, Y., Orr, R., Nelson, P., Barnes, M., McLaughlin, M. J., and Kookana, R. S.: The role of surface charge and pH changes in tropical soils on sorption behaviour of per- and polyfluoroalkyl substances (PFASs), Sci. Total Environ., 673, 197–206, https://doi.org/10.1016/j.scitotenv.2019.04.055, 2019.
Olsen, S. R., Cole, C. V., Watanabe, F. S., and Dean, L. A.: Estimation of Available Phosphorus in Soils by Extraction with Sodium Bicarbonate, USDA Circular No. 939, USDA, Washington, D.C., https://pdfs.semanticscholar.org/681a/42d80a5dd02d2917a7ec4af079916c576f29.pdf (last access: 29 June 2026), 1954.
Paustian, K., Lehmann, J., Ogle, S., Reay, D., Robertson, G. P., and Smith, P.: Climate-smart soils, Nature, 532, 49–57, https://doi.org/10.1038/nature17174, 2016.
Razavi, B. S., Zarebanadkouki, M., Blagodatskaya, E., and Kuzyakov, Y.: Rhizosphere shape of lentil and maize: spatial distribution of enzyme activities, Soil Biol. Biochem., 96, 229–237, https://doi.org/10.1016/j.soilbio.2016.02.020, 2016.
Rosinger, C., Keiblinger, K. M., Rousk, J., and Sandén, H.: Shifts in microbial stoichiometry upon nutrient addition do not capture growth-limiting nutrients for soil microorganisms in two subtropical soils, Biogeochemistry, 159, 33–43, https://doi.org/10.1007/s10533-022-00911-1, 2022.
Rousk, J., Brookes, P. C., and Bååth, E.: Contrasting soil pH effects on fungal and bacterial growth suggest functional redundancy in carbon mineralization, Appl. Environ. Microbiol., 75, 1589–1596, https://doi.org/10.1128/AEM.02775-08, 2009.
Rumpel, C., Amiraslani, F., Bossio, D., Chenu, C., Henry, B., Fuentes Espinoza, A., Koutika, L.-S., Ladha, J., Madari, B., Minasny, B., Olaleye, A. O., Shirato, Y., Sall, S. N., Soussana, J.-F., and Varela-Ortega, C.: The role of soil carbon sequestration in enhancing human resilience in tackling global crises including pandemics, Soil Secur., 8, 100069, https://doi.org/10.1016/j.soisec.2022.100069, 2022.
Sanchez-Moreno, S., Ros, M. B. H., Walder, F., Peixoto, L., Gómez-Gallego, T., Jeanbille, M., Juhanson, J., Feiza, V., Aponte, C., Pulido-Moncada, M., Parasotas, I., Kochiieru, M., Amaleviciute-Volunge, K., Dammie, N., van der Heijden, M. G. A., Ramos, J. L., Feizene, D., Philippot, L., Munkholm, L., Velthof, G. L., Petersen, S. O., Hallin, S., and Goberna, M.: A global dataset of experimental agricultural management on soil carbon accrual, its synergies and trade-offs, Sci. Data, 12, 929, https://doi.org/10.1038/s41597-025-05238-8, 2025.
Sanchez-Rodríguez, A. R., del Campillo, M. C., Torrent, J., Cooledge, E. C., Chadwick, D. R., and Jones, D. L.: Phosphorus fertilization promotes carbon cycling and negatively affects microbial carbon use efficiency in agricultural soils: Laboratory incubation experiments, Geoderma, 450, 117038, https://doi.org/10.1016/j.geoderma.2024.117038, 2024.
Sarkar, B., Singh, M., Mandal, S., Churchman, G. J., and Bolan, N. S.: Clay minerals-organic matter interactions in relation to carbon stabilization in soils, The Future of Soil Carbon: Its Conservation and Formation, Elsevier, 71–86, https://doi.org/10.1016/B978-0-12-811687-6.00003-1, 2018.
Sarker, J. R., Singh, B. P., He, X., Fang, Y., Li, G. D., Collins, D., and Cowie, A. L.: Tillage and nitrogen fertilization enhanced belowground carbon allocation and plant nitrogen uptake in a semi-arid canola crop–soil system, Sci. Rep., 7, 10726, https://doi.org/10.1038/s41598-017-11190-4, 2017.
Shu, X. Y., He, J., Zhou, Z. H., Xia, L. L., Hu, Y. F., Zhang, Y. L., Zhang, Y. Y., Luo, Y. Q., Chu, H. Y., Liu, W. J., Yuan, S., Gao, X. S., and Wang, C. Q.: Organic amendments enhance soil microbial diversity, microbial functionality and crop yields: A meta-analysis, Sci. Total Environ., 829, 154627, https://doi.org/10.1016/j.scitotenv.2022.154627, 2022.
Smith, P., Soussana, J.-F., Angers, D., Schipper, L., Chenu, C., Rasse, D. P., Batjes, N. H., van Egmond, F., McNeill, S., Kuhnert, M., Arias-Navarro, C., Olesen, J. E., Chirinda, N., Fornara, D., Wollenberg, E., Álvaro-Fuentes, J., Sanz-Cobena, A., and Klumpp, K.: How to measure, report and verify soil carbon change to realize the potential of soil carbon sequestration for atmospheric greenhouse gas removal, Global Change. Biol., 26, 219–241, https://doi.org/10.1111/gcb.14815, 2020.
Tang, R., Liu, Y., Ma, R., Zhang, L., Li, Y., Li, G., Wang, D., Lin, J., Li, Q., and Yuan, J.: Effect of moisture content, aeration rate, and C/N on maturity and gaseous emissions during kitchen waste rapid composting, J. Environ. Manage., 326, 116662, https://doi.org/10.1016/j.jenvman.2022.116662, 2023.
Walkley, A. and Black, I. A.: An examination of the Degtjareff method for determining soil organic matter and a proposed modification of the chromic acid titration method, Soil Sci., 37, 29–38, https://doi.org/10.1097/00010694-193401000-00003, 1934.
Wang, H., Dong, W., Shao, D., Liu, L., Liao, B., Gu, W., Tang, C., Liu, J., Hu, W., Feng, J., and Huang, J.: Biochar enhances paddy productivity, carbon sequestration, and reduces greenhouse gas emissions in the Middle Yangtze River region, Agronomy, 14, 3067, https://doi.org/10.3390/agronomy14123067, 2024a.
Wang, X., Wang, T., Huang, Y., Liu, A., Li, Q., Wang, Y., Li, M., Fan, F., and Tang, Z.: Effect of biochars on the immobilization and form of Cadmium (Cd) in simulated Cd deposition of iron rich soils, Ecotoxicol. Environ. Saf., 272, 116045, https://doi.org/10.1016/j.ecoenv.2024.116045, 2024b.
Xiao, Q., Huang, Y., Wu, L., Tian, Y., Wang, Q., Wang, B., Xu, M., and Zhang, W.: Long-term manuring increases microbial carbon use efficiency and mitigates priming effect via alleviated soil acidification and resource limitation, Biol. Fertil. Soils, 57, 925–934, https://doi.org/10.1007/s00374-021-01583-z, 2021.
Yang, X., Thornton, P., Ricciuto, D., and Post, W.: The role of phosphorus dynamics in tropical forests – A modeling study using CLM-CNP, Biogeosciences, 11, 1667–1681, https://doi.org/10.5194/bg-11-1667-2014, 2014.
Yang, Y., Cheng, S. L., Fang, H. J., Guo, Y. F., Li, Y. N., and Zhou, Y.: Interactions between soil organic matter chemical structure and microbial communities determine the spatial variation of soil basal respiration in boreal forests, Appl. Soil Ecol., 183, 104743, https://doi.org/10.1016/j.apsoil.2022.104743, 2023.
Ying, J. Y., Zhang, L. M., and He, J. Z.: Putative ammonia-oxidizing bacteria and archaea in an acidic red soil with different land utilization patterns, Environ. Microbiol. Rep., 2, 304–312, https://doi.org/10.1111/j.1758-2229.2009.00130.x, 2010.
Zhang, M. M., Wang, B., Li, D. C., He, J. Z., and Zhang, L. M.: Effects of long-term N fertilizer application and liming on nitrification and ammonia oxidizers in acidic soils, Acta Ecol. Sin., 35, 6362–6370, https://doi.org/10.5846/stxb201402260329, 2015.
Short summary
This study examined how different composts affect carbon dioxide emissions from tropical soil. We found that soil phosphorus and pH are key drivers and chicken dung compost resulting in the highest CO2 release. The work shows that compost is not carbon neutral; its environmental impact depends on how it changes the soil. This research helps farmers select composts that enhance soil health while curbing emissions, advancing climate-friendly tropical agriculture.
This study examined how different composts affect carbon dioxide emissions from tropical soil....
