Influence of Slope Direction on the Soil Seed Bank and Seedling Regeneration of Castanopsis hystrix Seed Rain

Objective: To investigate the impact of different slope directions on quantity and quality soil seed bank seedling germination process Castanopsis hystrix plantations. Method: Fixed sample plots in forest stands were established (sunny slope, semi-sunny semi-shady shady slope). The characteristics stand investigated, per-wood scaling was carried out. temporal dynamics rain quantified using collectors by collecting samples from depths. seeds determined, vigor mature measured throughout study. Results: (1) diffusion started mid-September, reached its peak late October to early November, ended mid-December. (2) dissemination process, occurrence time, composition varied between directions. intensity highest (572.75 ± 9.50 grains∙m−2), followed sunny (515.60 10.28 (382.13 12.11 finally (208.00 11.35 grains∙m−2). diffused earliest lasted longest, while latest shortest time. Seed proportion within greatest slope. (3) From end August following year, amount total reserves banks then it lowest mature, immature, gnawed various showed a decreasing trend with all mainly distributed litter layer, 0–2 cm humus only few present 2–5 layer. (4) density differed significantly had most seedlings, Conclusions: environmental conditions found be suitable for growth hystrix, more conducive regeneration restoration population.