Assessment and model research on scenic forest individual tree landscape quality in broadleaved and Korean pine mixed forests

In order to reasonably manage the natural scenic forest, the landscape photos and related information of 913 trees were collected in the broadleaved and Korean pine mixed forests in Banshihe Forest Farm of Songjianghe Forestry Bureau in the Changbai Mountain area in Jilin Province, northeastern China. After strict sieved, 87 trees were chosen to measure the scenic beauty values and decompose the landscape factors, and the relationship models of scenic beauty values and landscape elements were established by using multiple mathematical model I, then 99 trees were used to test these models. The results showed that: 1) there was a significant difference among the landscape factors affecting coniferous tree and the ones affecting deciduous tree. 2)The main elements affecting the scenic beauty value of individual tree landscape of coniferous trees were the straight level of trunk, definition of crown form, confusion of branch, integrity of crown, density of leaves. 3) The main elements affecting the scenic beauty value of individual tree landscape of deciduous trees were the crown form, definition of crown form, even level of crown, density of leaves, stretch of branch, straight level of trunk. 4) The management of scenic forest should take the landscape factors affecting individual tree landscape quality into consideration and regard cultivating individual coniferous tree with straight trunk and deciduous tree with full crown as target. 5) The models of coniferous trees and deciduous trees can predict scenic beauty value of individual tree landscape accurately. They can be applied to the research of individual tree landscape quality.