科尔沁草地植被特征

科尔沁草地有维管束植物１６４２种，隶属１２４科，５４属，其中菊科，禾本科，豆科，蔷薇科合计１５６属，５９１种，分别占全地区总属数，总种数的２８．８４％和３５．９９％，全部植物属于１５个区系成分，以达乌尔－蒙古成分起主导作用。多年生草本植物（１００９种）是构成科尔沁草地植被的主体，中生植物（１１４１种）居优势地位，沙生植物和盐生植物的广泛分布也是本地区植被的重要特征，草原植被水平分布规律基本上呈西北

The Vegetational Characters of Kerqin Grassland

There were 1642 species of vascular plants in Kerqin Grassland.These species belong to 124 fainilies,541 genera. Among them ,compositae,Gramineae,Leguminosae,Leguminosae,Rosaceae amount to 156 genera,591 speciesof total genera and species.The whole plants belong to 15 floras,but Dauer -mongolia composition isdominant function. Perenuial herb(1009 species)is main body of Kerqin vegetation. Mesic plants(1141species)occupy clominant status,the psammophytes and halophytes of widespread distribution areimportant characters of Kerqin vegetation. The law of vegetation horizontal distribution is basically changeof north west-south east.The steppe vegetation is main part,and sand vegetation and low wet landvegetation have developed well.Because of middle and low mountains,vegetation vertical zone distributiononly have 3-4 zones.