Research on contribution rate of plant community characteristics and stand spatial structure to landscape aesthetics quality of forest parks and its influencing factors

Abstract

The composition and evaluation of the plant community characteristics and stand spatial structure are the keys to the forest park landscape, and are of great significance to the optimization and promotion of forest park landscape. The research took Jinsiwan Forest Park in Fujian Province as the research object, and selected 40 typical samples and 24 factors to reflect the community characteristics and stand spatial structure. The scenic beauty estimation value of each sample was calculated by using scenic beauty estimation (SBE) method to construct a multiple regression linear model and landscape evaluation and prediction between SBE and various influencing factors categories, and analyze contributions of plant community characteristics and stand spatial structure to landscape aesthetics quality of forest parks. The findings indicated that the main factors affecting SBE included litter, uniformity of ground plants, abundance of conifer, crown density, variation coefficient of diameter at breast height (DBH), competition index, under branch height and uniform angle index, accounting for 20.809 per cent, 20.424 per cent, 14.547 per cent, 14.162 per cent, 10.790 per cent, 8.189 per cent, 6.455 per cent and 4.624 per cent respectively. The contribution rates of community characteristics and stand special structure were 87.187 per cent and 12.813 per cent. The research further explained the important roles of plant community characteristics and stand spatial structure in the scenic beauty estimation of forest parks.