Ecological Landscape Forest Tree Species Selection And Configuration Quantitative Study

We choose the Qing Shan Hu national forest park for our research object, aim at the local natural conditions, the demand of ecological construction and development of tourism, adopt a combination of qualitative and quantitative methods, through consultation with the expert we identify and quantify the selection of tree species and quantitative indicator system of structure configuration in the ecological landscape forest, use Analytic Hierarchy Process (AHP) and the Entropy-right Method to determine the Weights of each indicator, apply linear Simple Additive Weight (SAW) method to establishment tree species evaluation model and structure configuration evaluation model, apply model analysis and evaluation of existing ecological landscape forest to optimize the design. Main results are as follows:(1) A comprehensive evaluation of 40 study area commonly used trees is carried by applying tree species evaluation model. The results shows that the integrated character of evergreen trees such as Castanopsis sclerophylla, Schima superba and so on performed well, the integrated character of deciduous trees such as Albizzia julibrissin, Liquidamba formosana, Pistacia chinensis, Sapium sebiferum and so on also performed well. With the application of local tree species, Albizzia julibrissin, Liquidamba formosana, Pistacia chinensis, Sapium sebiferum, Castanopsis sclerophylla, Sophora japonica, Sapindus mukurossi, Koelreuteria integrifolia, Acer mono, Schima superba, Ulmus parvifolia, Bischofia polycarpa, Rhus chinensis, Diospyros kaki are proposed as the main local ecological landscape forest tree species. As acacia branches lower, not suit for bigger area virescence tree, so Castanopsis sclerophylla,Liquidamba formosana,Pistacia chinensis and Sapium sebiferum are proposed to use as the keynote tree species for ecological landscape construction of the Qing Shan Hu national forest park. (Keynote species has a small number, but large quantities, which form the keynote and character of the scenic spots and have an unified effection.)(2) Eevaluation of three typical landscape woodland is carried by applying the stand structure evaluation model, the integrated score of hardwood is more higher, Chinese fir is the lowest, Masson pine is in the middle. Main reason is broad-leaved forest species and stands layers are rich, while the Chinese fir species is simple, stand structure is single, and the arbor layer of masson pine wood species is also simple, but the updated with a higher level of species diversity. In order to build an ideal forest landscape structure, the broad-leaved forest plots need to increase the proportion of evergreen trees to ensure the scenery all the year round, masson pine wood need to be improved the proportion of broad-leaved arbor, especially autumn leaf species, In order to form a rich seasonal variation and species diversity. Chinese fir need to be increased the proportion of other broad-leaved tree species and replanting shrubs to improve the hierarchical structure of the stand and enrich seasonal variation.(3) We Proposed a optimize reconstructive model which suit for ecological landscape forest of the Qing Shan Hu National Forest Park Forest. 1) optimize mode for sun slope of broad-leaved wood: big arbor-small arbor-shrub-grass mode,structure configuration is Castanopsis sclerophylla+Liquidamba formosana+Sapium sebiferum-Sapindus mukurossi+Acer mono-Gardenia jasminoides+Nandina domestica-Reineckea carnea+Lycoris radiata+Trachelospermum jasminoides; 2) Optimize mode for overcast slope of masson pine wood: big arbor-small arbor-shrub-grass mode,structure configuration is Pinus massoniana+Castanopsis sclerophylla+Pistacia chinensis+Acer mono-Sapindus mukurossi+Ulmus parvifolia-Gardenia jasminoides+Nandina domestica-Ophitopogin japonicum+Trachelospermum jasminoides;3) Optimize mode for overcast slope of Chinese fir wood: big arbor-small arbor-shrub-grass mode,structure configuration is Cunninghamia lanceolata+Castanopsis sclerophylla+Pistacia chinensis-Sapindus mukurossi + Ulmus parvifolia-Gardenia jasminoides+Nandina domestica-Reineckea carnea+Trachelospermum jasminoides.