Long-term saline water irrigation has the potential to balance greenhouse gas emissions and cotton yield in North China plain

Zhou, Shuang; Wang, Guangshuai; Zhang, Junpeng; Dang, Hongkai; Gao, Yang; Sun, Jingsheng

doi:10.1016/j.jenvman.2024.120087

Cited by 1 publication

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“…Some studies found salt could affect microbial processes of soil C and N cycles (Poffenbarger et al, 2011;Yu et al, 2019;Shahariar et al, 2021). Our previous research has also found that SWI alters the content of soil environmental factors involved in C and N cycles, such as soil organic matter, inorganic N, and greenhouse gasses (Zhou et al, 2023(Zhou et al, , 2024. The changes in soil environmental factor content are crucial for assessing soil quality and health.…”

Section: Introductionmentioning

confidence: 99%

Long-term saline water irrigation affected soil carbon and nitrogen cycling functional profiles in the cotton field

Zhou,

Wang,

Han

et al. 2024

Front. Microbiol.

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Saline water irrigation (SWI) plays an important role in alleviating water resource shortages. At the same time, the salt input of irrigation water affects soil microorganisms which participate in various ecological processes of terrestrial ecosystems. However, the responses of soil microbial functional potential to long-term SWI remains unclear. Therefore, Metagenomics method was utilized in cotton fields under long-term SWI to reveal the microbial functional profiles associated with soil carbon and nitrogen cycles. Results indicated that SWI impacted the microbial functional profiles of soil carbon and nitrogen cycles in the cotton fields significantly. Especially, irrigation water salinity inhibited the relative abundances of sacC and vanB, which are soil carbon degradation genes. SWI also affected the functional gene abundance of nitrogen degradation, dissimilatory nitrate reduction, and nitrification. Moreover, SWI significantly increased the abundance of Candidatus_Cloacimonetes in both carbon and nitrogen cycles. In the discussion, we used person analysis found that soil salinity, pH, and ammonium nitrogen were important factors affecting the abundance of functional genes and microbial taxa. Overall, this study indicated that long-term SWI significantly influenced specific microbial functional genes and taxa abundance, which may lead to predictable outcomes for soil carbon and nitrogen cycling, and is of great importance in exploring the impact of SWI on soil environments.

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