Assessment Of Resources And Application Potential Of Landscape In The Area Of Chifeng

The investigation of wild ornamental plant resources is an important means of garden plant research and application,which can not only enrich the botanical garden plant species diversity,but also is an important way to protect the wild ornamental plant resources.In this study,the wild cover plant resources of the grassland in Balinzuo Banner?Balinyou Banner?Hexigten Banner?Ar Horqin Banner and Ongniud Banner were investigated and evaluated,in order to improve the existing grassland vegetation information,promote grassland revegetation,utilize reasonably and protect forage germplasm resources,develop livestock farming.The results are as follows:(1)Through reconnaissant survey and the sample plot investigation,there were 56 families 210 genera 331 species,mainly Compositae?Gramineae?Leguminosae;(2)Based on sample plot investigation,the dominant plant species in Balinyou Banner grassland were Leymus chinensis and Artemisia sylvatica,the relative importance values of which were 0.0928 and 0.0926 respectively,and Cleistogenes caespitosa,Phragmites australis,Carex duriuscula were companion species,of which the relative importance values were 0.0763,0.0751 and 0.0732 respectively;The dominant plant species in Balinzuo Banner grassland were C.duriuscula,the relative importance value of which was 0.0796,and the companion species were L.chinensis,Cleistogenes songorica and Linum stelleroides,the relative importance values of which were 0.0723,0.0670,and 0.0656 respectively;The dominant plant species in Hexigten Banner grassland were C.duriuscula,the relative importance value of which was 0.1176,and the companion species were L.chinensis,Agropyron cristatum and Themede minor,the relative importance values of which were 0.1128,0.0769,and 0.0660 respectively;The dominant plant species in Ar Horqin Banner grassland were Leymus chinensis,the relative importance value of which was 0.1059,and the companion species were Carex duriuscula,Cleistogenes squarrosa and Potentilla discolor,the relative importance values of which were 0.0670,0.0641,and 0.0517 respectively;The dominant plant species in Ongniud Banne grassland were Carex duriuscula,the relative importance value of which was 0.1244,and the companion species were Phragmites australis,Echinochloa crusgalli and Plantago asiatica,the relative importance values of which were 0.0643,0.0628,and 0.0466 respectively.(3)There was an extremely difference in the diversity of grassland plant communities(p<0.01),the diversity index of grassland plant community in the main grassland areas in Chifeng appeared initially rising and then decreasing with the increase of altitude,and the plant community diversity was the highest at the middle altitude(800m).(4)261 kinds of wild groundcover plants were evaluated by the analytic hierarchy process(AHP),the results showed that,18 species had high value to be developed and utilized,135 kinds took second place and 57 species third,51 species had no value to be exploited and applied,which could provide a reference to the application of wild groundcover plants in the garden.(5)37 species of endangered plants were found during sorting the results of the survey.So,some plans of the protection of wild ornamental plant resources and the sustainable development countermeasures had been put forward.