Method for measuring and calculating diffusivity and key regulatory factors of single phyllostachys edulis

Abstract

The invention discloses a method for measuring and calculating diffusivity and key regulatory factors of a single phyllostachys edulis. The method comprises the steps of selecting a forest stand sample plot in which phyllostachys edulis is distributed; marking a single phyllostachys edulis in the sample plot, setting a sample circle after marking for two years, and calculating the diffusivity index of the single phyllostachys edulis; calculating stand structure indexes of the sample plot, wherein the stand structure indexes include the stand density, the average diameter at breast height, the average tree height, the species richness index, the Marglef richness index, the Shannon-Wiener diversity index, the Pielou uniformity index, the tree species simple mingling degree, the diversity mingling degree, the competition index and the aggregation index; classifying the diffusivity indexes of the single phyllostachys edulis as a group of variables, classifying the forest stand structure indexes as a group of variables, and obtaining the relation between the diffusivity of the single phyllostachys edulis and the key regulatory factors through canonical correlation analysis. Compared with an existing method for calculating the diffusivity of the single phyllostachys edulis by manually excavating underground bamboo rhizomes, the method is more labor-saving and time-saving, the efficiency is obviously improved, and the change and influence on the soil structure and microorganisms caused by excavating the bamboo rhizomes are avoided.

Description

technical field [0001] The invention relates to the field of bamboo forest management, in particular to a method for measuring the diffusion ability and key adjustment factors of a single moso bamboo plant. Background technique [0002] Moso bamboo (Phyllostachys edulis) is native to the subtropical region of my country, belongs to Gramineae (Gramineae) bamboo subfamily (Bambusoideae) Phyllostachys (Phyllostachys), is a typical clonal plant, and is a uniaxial scattered bamboo. Bamboo raises whips, whips give birth to shoots, shoots grow from shoots, and shoots grow into bamboos... Repeatedly, the growth is endless, and it spreads to the surrounding areas year by year, which has a serious impact on the composition of adjacent forest communities, biodiversity, and soil physical and chemical properties. Scholars have paid close attention to and carried out research on the expansion of moso bamboo. However, there is a lack of research on the measurement and key inhibitory facto...

AI Technical Summary

Problems solved by technology

Based on the above studies related to Moso bamboo, most of them are to reveal the impact of the expansion of Moso bamboo on its surrounding forest communities, but there are no reports on the calculation method of the dispersal ability of a single Moso bamboo and the key regulatory factors.

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