Abstract
A dominant species of steppe in northern China, Stipa grandis, is gradually being replaced by S. krylovii due to climate change events. The aim of this study was to explore how conditioned soil, nitrogen (N) resource, and competitor influenced the responses of S. grandis and S. krylovii. We planted S. grandis and S. krylovii monoculture and mixture in each of four conditioned soils with two N treatments and analyzed which factor(s) significantly influenced the plant–soil feedbacks (PSFs), competitiveness, and N-addition effects of each species by general linear model univariate analysis. Competitor but not nitrogen significantly influenced PSFs of both S. grandis and S. krylovii. Compared with PSFs in monoculture, the negative PSFs of S. grandis were suppressed and PSFs of S. krylovii shifted from positive to negative in mixture. Competitor only significantly influenced the N-addition effects on S. krylovii; nitrogen only significantly influenced the competitiveness of S. krylovii. The highest competitiveness of S. krylovii was obtained in S. grandis conditioning soil with high N treatment. Compared with any of the other growth conditions, soil conditioned by S. grandis with high N treatment could increase S. krylovii’s competition superiority by increasing its competitiveness and N-addition effect.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
