Community characteristics and interspecific association of secondary Cotinus coggygria shrubbery in Three Gorges Reservoir Region

Taking the secondary coggygria (Cotinus coggygria) shrub community in the Three Gorges reservoir area as the research object, based on the sample site survey, the habitat and community characteristics are analyzed. The results show that the community has 30 families, 37 genera and 56 species of plants, and the species composition is simple and diverse The community is mostly light-loving, drought-tolerant, and alkaline soil species. Altitude and soil available phosphorus content are important factors for habitat differences; altitude, slope and aspect have the greatest impact on species distribution. Altitude and species density are extremely Significant negative correlation, extremely significant positive correlation between aspect and species height; soil pH is significantly negatively correlated with species diversity and uniformity, available potassium content is extremely significantly positively correlated with species density, and available phosphorus content is significantly correlated with species ri