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SOIL
SOIL
Articles | Volume 9, issue 1
Articles | Volume 9, issue 1
https://doi.org/10.5194/soil-9-351-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/soil-9-351-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 9, issue 1
Original research article
 | 
28 Jun 2023
Original research article |  | 28 Jun 2023

Quantification of the effects of long-term straw return on soil organic matter spatiotemporal variation: a case study in a typical black soil region

Yang Yan, Wenjun Ji, Baoguo Li, Guiman Wang, Songchao Chen, Dehai Zhu, and Zhong Liu

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Latest update: 29 Oct 2025
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Short summary
The response rate of soil organic matter (SOM) to the amount of straw return was inversely proportional to the initial SOM and the sand contents. From paddy to dryland, the SOM loss decreased with the increased amount of straw return. The SOM even increased by 1.84 g kg-1 when the straw return amount reached 60–100%. The study revealed that straw return is beneficial to carbon sink in farmland and is a way to prevent a C source caused by the change of paddy field to upland.
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