Pedosphere 34(1): 44--51, 2024
ISSN 1002-0160/CN 32-1315/P
©2024 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Soil and microbial C:N:P stoichiometries play vital roles in regulating P transformation in agricultural ecosystems: A review |
Guanglei CHEN1,2, Jiahui YUAN1, Shenqiang WANG1, Yuting LIANG1, Dengjun WANG3, Yiyong ZHU4, Yu WANG1 |
1 State Key Laboratory of Soil and Sustainable Agriculture, Changshu National Agro-Ecosystem Observation and Research Station, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China);
2 School of Life Sciences, Jiangsu Normal University, Xuzhou 221000 (China);
3 School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn AL 36849 (USA);
4 Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing 210095 (China) |
| ABSTRACT |
| Stoichiometry plays a crucial role in biogeochemical cycles and can modulate soil nutrient availability and functions. In agricultural ecosystems, phosphorus (P) fertilizers (organic or chemical) are often applied to achieve high crop yields. However, P is readily fixed by soil particles, leading to low P use efficiency. Therefore, understanding the role of carbon:nitrogen:P stoichiometries of soil and microorganisms in soil P transformation is of great significance for P management in agriculture. This paper provides a comprehensive review of the recent research on stoichiometry effect on soil P transformation in agricultural ecosystems. Soil microorganisms play an important role in the transformation of soil non-labile inorganic P to microbial biomass P by regulating microbial biomass stoichiometry. They also mobilize soil unavailable organic P into available P by changing ecoenzyme stoichiometry. Organic materials, such as manure and straw, play an important role in promoting the transformation of insoluble P into available P as well. Additionally, periphytic biofilms can reduce P loss from rice field ecosystems. Agricultural stoichiometries are different from those of natural ecosystems and thereby should receive more attention due to the influences of anthropogenic factors. Therefore, it is necessary to conduct further stoichiometry research on the soil biochemical mechanisms underlying P transformation in agricultural ecosystems. In conclusion, understanding stoichiometry impact on soil P transformation is crucial for P management in agricultural ecosystems. |
| Key Words: ecoenzyme,microbial biomass,microbial community,microorganism,P availability,periphytic biofilm,soil P transformation |
| Citation: Chen G L, Yuan J H, Wang S Q, Liang Y T, Wang D J, Zhu Y Y, Wang Y. 2024. Soil and microbial C:N:P stoichiometries play vital roles in regulating P transformation in agricultural ecosystems: A review. Pedosphere. 34(1): 44–51. |
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