Landscape Value Evaluation Of Common Plants In Bayannaoer City

In this thesis,17 kinds of common plants in Bayannaoer City were taken as the research object,and the ornamental characteristics,drought tolerance and adaptability of plants were observed,tested,investigated and collected.The comprehensive evaluation model of ornamental plants and landscape value was constructed by using analytic hierarchy process(AHP),and the landscape value of plants in this area was comprehensively evaluated by using the evaluation model.According to the biological and ecological characteristics of plants,combined with field observation and indoor plant anatomical structure experiment,the phenological period,ornamental characteristics and adaptability of plants were comprehensively evaluated,so as to provide scientific theoretical guidance for the selection of plant resources in Bayannaoer City.The main results are as follows:(1)The Phenological map is the most intuitive expression method of plant ornamental period.17 kinds of plant ornamental phenological maps were drawn by using the function of Gantt map.The phenological information of 17 kinds of plants in Bayannaoer City was systematically studied and analyzed,which will provide intuitive and convenient reference for the study of local garden plants;The 17 species of plants were evaluated by analytic hierarchy process(AHP).According to the evaluation of ornamental value,they were divided into three grades.Rosa xanthina(4.24),Cornus alba(4.11),Forsythia suspense(4.09)and Rosa rugosa(4.01)had the highest ornamental value and the grade was I;(2)In this thesis,17 species of plants in Bayannaoer City were selected as the research objects.Through vibration sectioning technology,the anatomical structure indexes of leaf thickness,cuticle thickness,epidermis thickness,stem diameter,cuticle thickness and pachycera thickness of different plants were compared by light microscope,and some drought resistant indexes were selected,The results showed that five of the 17 plants with strong drought tolerance were Ulmus pumila(0.5749),Ammopiptanthus mongolicus(0.5099),Tamarix chinensis(0.4754),Zgyophyllum xanthoxylom(0.4903)and Buxus sinica var.parvifolia(0.4004);(3)According to the evaluation of landscape value,the ornamental grade can be divided into three grades.The ornamental value of grade I is the highest,and there is one plant Rosa xanthina(4.01);There are 11 species of plants with high ornamental value in grade II,including Amorpha fruticosa(3.80),Berberis thunbergii(3.76),Amygdalus mongolica(3.74),Ammopiptanthus mongolicus(3.67),Tamarix chinensis(3.56),Spiraea pubescens(3.37)and Tamarix chinensis(3.56)Amygdalus triloba(3.22),Forsythia suspense(3.08),Rosa rugosa(3.07),Ulmus glaucescens(3.02)and zgyophyllum Xanthoxylum(3.00)were the most common species;There are 5 species of plants with average ornamental value in grade III,including Buxus Sinica var.parvifolia(2.90),Ziziphus jujuba var.spinosa(2.76),Cornus alba(2.58),Sorbaria kirilowii(2.57)and Buxus Sinica var.parvifolia(2.54).To sum up,through the study of plant ornamental characteristics,drought tolerance and phenological characteristics,we can fully consider the characteristics,adaptability and other characteristics of the region,in order to correctly select the plants with good landscape value,in order to provide theoretical basis and method guidance for the selection of garden plants in Bayannaoer City.