Articles | Volume 9, issue 1
https://doi.org/10.5194/soil-9-351-2023
https://doi.org/10.5194/soil-9-351-2023
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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Cited articles

Ahrens, R. J.: Digital soil mapping with limited data, PhD., Springer Science & Business Media, 978-1-4020-8591-8, 2008. 
Berhane, M., Xu, M., Liang, Z., Shi, J., Wei, G., and Tian, X.: Effects of long-term straw return on soil organic carbon storage and sequestration rate in North China upland crops: A meta-analysis, Global Change Biol., 26, 2686–2701, https://doi.org/10.1111/gcb.15018, 2020. 
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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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