A Primary Analysis of Ecological Characters of Lawn Weeds in the city of Hohhot

The specific composition and quantitative character of lawn weeds in Hohhot city during summer and autumn were analyzed.It was shown that there were 122 species of weeds,which belonged to 82 genuses,29 families.In the lawn under higher management level,the main weeds were Geranium sibiricum,Potentilla anserina,Leymus secalinus,and their important values were relatively stable in different seasons.In the lawn,under lower management level,the main dominant species was Digitaria ischaemum from July to the middle of September,after that Vida prionan ,Polygorum sibiricum,Artemsia argyi became dominant weeds.