Different community crown layer environment under purple ear arrow bamboo shoots of growth development research
Abstract
The Jinfo Mountain National Nature Reserve in 3A different type community (deciduous broad-leaved forest, Evergreen deciduous broad-leaved mixed forest, Evergreen broad-leaved forest) under purple ear fargesia (Fargesia decurvata J.L.Lu) Young are of Growth Development Research. Results display: (1) Deciduous broad-leaved forest and evergreen deciduous broad-leaved mixed forest under the purple ear fargesia shooting of early and long duration 110 d Shooting large shooting rate is high; evergreen broad-leaved forest under the shooting of late and short duration 88 D Shooting less shooting rate low; evergreen deciduous broad-leaved mixed forest in the shooting of maximum. (2) Shooting period is divided 3A stage: early stage and the end the community in purple ear fargesia into each period of time have difference evergreen deciduous broad-leaved mixed forest in the first to enter the shooting stage deciduous broad-leaved forest followed by evergreen broad-leaved forest. Shooting stage is also back are the peak back are rate of size for: evergreen deciduous broad-leaved mixed forest > Deciduous broad-leaved forest>Evergreen broad-leaved forest. (3) The same community crown layer environment under purple ear fargesia Different Period Unearthed of young are ground diameter no significant difference. In deciduous broad-leaved forest and evergreen deciduous broad-leaved mixed forest canopy environment in the Period Unearthed of young are ground diameter between no significant difference but were significantly greater than the evergreen broad-leaved forest (P < 0.05). (4) Purple ear fargesia young are unearthed after 80 d About complete high growth process and in line Logistic Equation was Slow-Fast-Slow Of growth trend. High growth rate for: evergreen deciduous broad-leaved mixed forest > Deciduous broad-leaved forest > Evergreen broad-leaved forest and difference significant (P < 0.05). (5) Purple ear understory of bamboo cloning reproduction and ramet density between have close relationship. With the ramets density of increase shooting quantity increase bamboo quantity reduce. This study show that different Community crown layer environment under purple ear bamboo growth development significant difference in evergreen deciduous broad-leaved mixed forest in development best evergreen broad-leaved forest in development worst, population density of bamboo of update development the important regulation role.
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DOI: https://doi.org/10.18686/ppas.v1i1.1146
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