Quantitative Analysis On Relevancy Between Community Structure And Landscape Quality In Landscape Forest

As one kind of special component of the ecological public-welfare forest, ecological landscape forest improves ecological environment for the location area, meanwhile it also plays an important role in landscape function.At present, the research of ecological landscape forest is still at the preliminary stage, which programmings and builds have no detailed standard to follow yet. Based on it, this paper focused on the community structure and landscape quality of ecological landscape forest, combining the theories such as forest community ecology, biodiversity, natural succession and landscape evaluation etc, to take the quantitative analysis for the relationship between community structure and landscape quality in 30 plots of Chun'an, Jinhua, Dongyang. In the end, this paper supplied a few of quantity guide line primarily for landscape forest building. The main results were as follows:(1) The results for community structure indicated that both of broad-leaved forests and the coniferous and broad-leaved mixed forests were diverse in the species, the value of H was 1.389 and 1.442; the pine massoniana forest was 0.673; the Chinese fir forest has smallest diversity. With the stand density, the Chinese fir forest was higher than the other three types of forests, reaching 3,967 trees·hm-2. The pine massoniana forest and coniferous and broad-leaved mixed forests had good vertical structure and more clearly differentiate into spatial layers than broad-leaved mixed forest. The shrubs in broad-leaved mixed forest were so high that the light in woods was not very good. Chinese fir forest had few shrub and herbal layers with the worse vertical structure. From the angle of spatial distribution pattern, coniferous forest plantations were of uniform, while broad-leaved forest populations were principally clumped. For natural succession, broad-leaved forest was most steady, the coniferous and broad-leaved mixed forest and pine massoniana forest had drastic competition inside community, while Chinese fir forest has few succession.(2) Using perceptual preference assessment to quantitatively analyze the landscape quality for landscape forest. The survey was spread by internet and face to face, returned back share of 411, and got the standard values of landscape for every plot. 15 landscape elements were set up and quantitated to establish the regression model with the standard values. Then 8 mostly influencing elements were chosen by the model.(3) The results of correlation analysis between structure elements and landscape elements indicated that various landscapes elements all had the corresponding structure elements with it relative, presented many to one or one to one relevance. In the condition of this paper, the comparison with the standard values of four different types of ecological landscape forest indicated that the pine massoniana forest which at the primary succession condition had the best landscape quality. Based on the condition of the pine massoniana forest, this paper got the quantitative guide line on relevancy of community structure and landscape quality finally.