Ecological Effects and Microbial Regulatory Mechanisms of Functional Grass Species Assembly in the Restoration of "Heitutan" Degraded Alpine Grasslands.

ABSTRACT: The restoration of "Heitutan" degraded grasslands on the Qinghai-Tibetan Plateau was hindered by suboptimal grass species mixtures, leading to low vegetation productivity, impaired soil nutrient cycling, and microbial functional degradation. Based on a 22-year controlled field experiment, this study systematically elucidated the regulatory mechanisms of different artificial grass mixtures on vegetation community characteristics, soil physicochemical properties, and bacterial community structure and function. The results demonstrated that mixed-sowing treatments significantly improved soil conditions and enhanced aboveground biomass. The HC treatment (Elymus nutans Griseb. + Poa crymophila Keng ex L. Liu cv. 'Qinghai' + Festuca sinensis Keng ex S. L. Lu cv. 'Qinghai') a

SUBMITTER: Cai Z 

PROVIDER: S-EPMC12566440 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature