Data from: Moss community dynamics and canopy-mediated environmental influences during primary succession in a glacier retreat zone

This dataset contains field and experimental data on moss community
dynamics, biomass, cover, and physiological functions (photosynthesis and
N₂-fixation) along a 129-year primary successional chronosequence on the
glacial retreat area of Hailuogou Glacier, eastern Qinghai-Tibet Plateau.
The dataset integrates: Successional surveys of moss biomass and cover
across stages S0 to S6; Reciprocal moss transplantation experiments among
three representative successional sites with varying canopy cover; Canopy
tree litter addition experiments, testing effects of different litter
types on moss function; Functional trait measurements, including
photosynthetic rates and nitrogen fixation (via acetylene reduction
assay), across treatments and years (2018–2019); Statistical analyses such
as linear regression and redundancy analysis (RDA), linking environmental
drivers (e.g., canopy cover, litter, throughfall NH₄⁺, daylight) to moss
functional responses; Conceptual modeling to summarize interactions
between canopy-mediated environmental factors and moss productivity. The
data support the conclusion that moss biomass and function are tightly
regulated by canopy structure and nutrient inputs, with notable trade-offs
between photosynthesis and N₂-fixation across successional stages. This
dataset provides valuable insight into moss ecological roles during
primary succession following glacial retreat.