Wheat straw hydrochar induced negative priming effect on carbon decomposition in a coastal soil

Xiao Wang; Zhen Li; Yadong Cheng; Hui Yao; Hui Li; Xiangwei You; Chengsheng Zhang; Yiqiang Li

doi:10.1002/imt2.134

Wheat straw hydrochar induced negative priming effect on carbon decomposition in a coastal soil

Imeta. 2023 Sep 13;2(4):e134. doi: 10.1002/imt2.134. eCollection 2023 Nov.

Authors

Xiao Wang^{1

2

3}, Zhen Li¹, Yadong Cheng^{1

2

3}, Hui Yao^{1

2

3}, Hui Li⁴, Xiangwei You^{1

2

3}, Chengsheng Zhang^{1

2

3}, Yiqiang Li^{1

2

3}

Affiliations

¹ Marine Agriculture Research Center, Tobacco Research Institute Chinese Academy of Agricultural Sciences Qingdao China.
² National Center of Technology Innovation for Comprehensive Utilization of Saline-Alkali Land Dongying China.
³ Qingdao Key Laboratory of Coastal Saline-alkali Land Resources Mining and Biological Breeding Tobacco Research Institute Qingdao China.
⁴ Department of Crop and Soil Sciences North Carolina State University Raleigh NC USA.

Abstract

The mechanisms underlying hydrochar-regulated soil organic carbon (SOC) decomposition in the coastal salt-affected soils were first investigated. Straw-derived hydrochar (SHC)-induced C-transformation bacterial modulation and soil aggregation enhancement primarily accounted for negative priming effects. Modification of soil properties (e.g., decreased pH and increased C/N ratios) by straw-derived pyrochar (SPC) was responsible for decreased SOC decomposition.