Effects of Stellera chamaejasme Development on Community Structure of Micro-scale Topography in Alpine Meadow
This study investigated the influence of Stellera chamaejasme at different developmental ages on both community composition and soil stoichiometry within an alpine meadow ecosystem though the circu-lar quadrat method for data collection.The results showed that S.chamaejasme significantly reduced commu-nity coverage,community weighted average height,and plant density and aboveground biomass of grassland on micro-scale,with the impact increasing with its development.Additionally,it decreased the dominance of Gramineae and Cyperaceae while promoting weed dominance.α-diversity initially increased with S.chamae-jasme growth but declined at the V age.Notably,soil total carbon,total nitrogen,and total phosphorus decreased significantly,while carbon phosphorus ratio and nitrogen phosphorus ratio increased with S.chamaejasme age.Our findings demonstrated that S.chamaejasme significantly altered the micro-scale plant community structure and soil stoichiometry in alpine meadow,with the magnitude of impact dependent on its age.This suggested the need for timely intervention measures in S.chamaejasme-type degraded grasslands.Particularly before the V age(about 8 years),implementing enclosure,nitrogen fertilization,and replanting leguminous grasses could support effective ecological restoration.
NETL
NSTL
万方数据
维普
