Preprints
https://doi.org/10.5194/egusphere-2022-963
https://doi.org/10.5194/egusphere-2022-963
04 Nov 2022
 | 04 Nov 2022

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

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

Abstract. The straw return practice is essential to soil organic matter (SOM) accumulation in the black soil area with high carbon sequestration potential. However, due to lacking accurate spatial distribution of straw return, few studies took straw return as a variable to carry out rigorous research on the impact of straw return on SOM variation on a regional scale. Based on soil samples and 16 environmental covariates including a 10-meter-resolution straw return amount, the study mapped the spatial distributions of SOM in 2006 and 2018 by random forest (RF) and evaluated the effects of the interaction of soil properties, land use and straw return on SOM spatial-temporal variation. The results show that in the context of the straw returning, the mean SOM content increased from 18.93 g kg−1 to 20.84 g kg−1 during 2006–2018. And 74.49 % of the region had a significant increase (maximum: 24.41 g kg−1) of SOM. The severest SOM loss occurred in the northwest due to the light texture and the transition from paddy fields to dryland. Nevertheless, for areas from paddy fields 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 %. In addition, soil with higher initial SOM and sand content had a lower response to straw return. The study revealed that straw return is beneficial to carbon sink in farmland and is a better way to prevent a carbon source caused by the change of paddy field to dryland.

Journal article(s) based on this preprint

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
SOIL, 9, 351–364, https://doi.org/10.5194/soil-9-351-2023,https://doi.org/10.5194/soil-9-351-2023, 2023
Short summary

Yang Yan et al.

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on egusphere-2022-963', Shuo Li, 05 Dec 2022
  • RC1: 'Comment on egusphere-2022-963', Anonymous Referee #1, 13 Dec 2022
  • RC2: 'Comment on egusphere-2022-963', Anonymous Referee #2, 09 Mar 2023
  • CC2: 'Comment on egusphere-2022-963', Bifeng Hu, 16 Mar 2023

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on egusphere-2022-963', Shuo Li, 05 Dec 2022
  • RC1: 'Comment on egusphere-2022-963', Anonymous Referee #1, 13 Dec 2022
  • RC2: 'Comment on egusphere-2022-963', Anonymous Referee #2, 09 Mar 2023
  • CC2: 'Comment on egusphere-2022-963', Bifeng Hu, 16 Mar 2023

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Publish subject to minor revisions (review by editor) (24 Apr 2023) by Bas van Wesemael
AR by Wenjun Ji on behalf of the Authors (27 Apr 2023)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (27 Apr 2023) by Bas van Wesemael
ED: Publish as is (27 Apr 2023) by Jeanette Whitaker (Executive editor)
AR by Wenjun Ji on behalf of the Authors (06 May 2023)  Author's response   Manuscript 

Journal article(s) based on this preprint

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
SOIL, 9, 351–364, https://doi.org/10.5194/soil-9-351-2023,https://doi.org/10.5194/soil-9-351-2023, 2023
Short summary

Yang Yan et al.

Yang Yan et al.

Viewed

Total article views: 1,007 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
698 270 39 1,007 12 17
  • HTML: 698
  • PDF: 270
  • XML: 39
  • Total: 1,007
  • BibTeX: 12
  • EndNote: 17
Views and downloads (calculated since 04 Nov 2022)
Cumulative views and downloads (calculated since 04 Nov 2022)

Viewed (geographical distribution)

Total article views: 994 (including HTML, PDF, and XML) Thereof 994 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 07 Oct 2023
Download

The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.

Short summary
The response rate of SOM to the amount of straw return was inversely proportional to the initial SOM and the sand contents. From paddy to dry land, 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.