Study On The Green Quantity Of Five Rare And Endangered Plants,Such As Ammopiptanthus Mongolicus In Etuoke Banner

For urban landscaping,we should not only consider the city’s environmental benefits,but also need to consider the overall beautification effect,and the most important thing is not to destroy the ecological environment,to protect the ecological function.Three-dimension green quantity is currently used as the main index in the evaluation of urban ecological benefits,compared with the two-dimensional green quantity evaluationindex,it effectively solves the expression to the vegetation types and the plant disposition is not clear,and accurate description,community composition of different types of plant and vegetation distribution of the three-dimensional green biomass,full play in the urban landscaping plants on various aspects of the role of.In the process of plant configuration in landscape design,exotic species should be reduced,native plants should be planted mainly,and on the basis of adhering to the principle of suitable land and suitable trees,plant landscape with regional characteristics should be created as far as possible.It is an important measure to protect natural resources and ecological environment,maintain ecological security and promote the harmony between human and nature to study the three-dimensional green quantity of rare and endangered plants.From the current point of view,the research of three-dimensional green quantity is mainly aimed at the common species of landscaping,whether in China or abroad,few people to rare and endangered plants for the research of three-dimensional green quantity.In this paper,the three-dimensional green quantity of five rare and endangered plants such as Ammopiptanthus mongolicus(Maxim.)Cheng f,Helianthemum ordosicum Y.Z.Zhao et R.Cao,Tetraena mongolica Maxim,Prunus mongolica Maxim and Zygophyllum xanthoxylon(Bnge)Maxim is calculated,and the green quantity of five rare and endangered plants in etok banner is calculated through investigation,and the relevant equation is obtained through analysis and calculation.The regression equation of specific planting species is as follows:(1)according to correlation analysis,the unary regression equation of green quantity(L)and height(h1),crown width(h2),or leaf curtain thickness(h3)of five rare and endangered shrub species is obtained as follows:Ammopiptanthus mongolicus(Maxim.)Chengf:L=17.229 h2-34.559 R squared=0.827Helianthemum ordosicum Y.Z.Zhao et R.Cao:L=14.229 h2-34.559 R squared=0.856Tetraena mongolica Maxim:L=29.567 h2-21.758 R squared=0.640Prunus mongolica Maxim:L=4.48 h2-24.048 R squared=0.888Zygophyllum xanthoxylon(Bunge)Maxim:L=2.776 h2-29.021 R squared=0.881In the above equation,L is the green quantity,h2 is the crown amplitude,and R is the goodness of fit.(2)the binary primary regression equation of green quantity(L)and height(h1),crown width(h2),or leaf curtain thickness(h3)of 5 rare and endangered shrub species is as follows:Ammopiptanthus mongolicus(Maxim.)Cheng f:L=15.242 h1+28.723h2-56.640 R squared=0.851Helianthemum ordosicum Y.Z.Zhao et R.Cao:L=6.858 h1+6.55h3-19.165 R squared=0.810Tetraena mongolica Maxim:L=8.33 h1+17.43h2-13.865 R squared=0.896Prunus mongolica Maxim:L=6.830 h1+17.303h2-17.750 R squared=0.954Zygophyllum xanthoxylon(Bunge)Maxim:L=14.742 h1+27.446h2-16.066 R squared=0.939In the above equation,L represents the green quantity;H1 stands for plant height;H2 represents crown amplitude;H3 represents the thickness of leaf curtain;R squared is the goodness of fit.