新疆焉耆垦区防护林主要树种适宜性评价研究OA北大核心CSTPCD

Based on the actual needs of ecological environment construction and protection of shelter forest system in Yanqi Agricultural Area,this study selected the ecological adaptability,ecological function,com-prehensive benefit and ornamental value of tree species as the main evaluation criteria for the selection of shelter forest tree species through forest resource monitoring and field investigation,and selected 15 evalu-ation factors such as cold resistance,drought resistance,stem borer resistance,windproof ability and eco-nomic benefit as indicators.The analytic hierarchy process was used to establish a three-level evaluation system,and the multi-objective linear weighted sum method was used to obtain the overall score(Y)of tree species adaptability evaluation of 64 main shelter forest tree species in the region,and the suitability of shelter forest tree species was classified according to the values of the score.According to the analysis,the tree species with excellent suitability at level Ⅰ(Y≥4.0)included 8 species,such as Robinia pseudoacacia'Hongsen',Populus euphratica,P.alba var.pyramidalis,etc.;the tree species with good suitability at level Ⅱ(3.6≤Y＜4.0)included 19 species,such as R.pseudoacacia,Elaeagnus angustifolia,Crataegus pinnatifida,Juglans nigra,etc.;the tree species with average suitability at level Ⅲ(3.2≤Y＜3.6)in-cluded 19 species,such as Pinus sylvestris var.mongolica,Corylus heterophylla ×C.avellana,Ailanthus altissima,Malus pumila,etc.;the tree species with poor suitability at level Ⅳ(2.8≤Y＜3.2)included 13 species,such as of Acer negundo,Ulmus pumila,Salix babylonica,etc.;at level Ⅴ(Y＜2.8),the tree spe-cies with very poor suitability included 5 species,such as P.nigra var.thevestina,P.nigra,S.hybrid,etc.