The species and diversity of urban natural herb plants in Jilin city were investigated and studied in this paper. The result showed that there were 80 species of herb plants, with 32 families and63 genera. The species...The species and diversity of urban natural herb plants in Jilin city were investigated and studied in this paper. The result showed that there were 80 species of herb plants, with 32 families and63 genera. The species of composite plant was the most more than the other families, and the gramineous species was the second one, then the polygonaceae species etc. According to thespecies importance value, the dominance of Chenopodium Glaucum was the first largest, the second to Plantsgo asiatica, Chenopodium Album and Echino chloa frumentacea etc. The diversity indexes on family, genus and species were calculated, and the Shannon-Wiener indexes were orderly 1.0670, 1.4214 and 1.5645, the evenness indexes were 0.3079, 0.3431 and 0.3570, and the dominant indexes were 0.1238￡?0.0629 and 0.0424 in turn.展开更多
以75种园林树木为试材,通过测定其叶片相对含水量、叶片保水力、束缚水含量及束缚水/自由水,采用隶属函数值聚类分析法对其抗旱性进行聚类分析。结果表明,可将75种园林树木分为4类:第Ⅰ类为抗旱性强的树种,包括桑树(Morus alba L.)等12...以75种园林树木为试材,通过测定其叶片相对含水量、叶片保水力、束缚水含量及束缚水/自由水,采用隶属函数值聚类分析法对其抗旱性进行聚类分析。结果表明,可将75种园林树木分为4类:第Ⅰ类为抗旱性强的树种,包括桑树(Morus alba L.)等12种;第Ⅱ类为抗旱性较强的树种,包括黄檗(Phellodendron amurense Rupr.)等15种;第Ⅲ类为抗旱性中等的树种,包括杠柳(Periploca sepium Bunge)等20种;第Ⅳ类为抗旱性弱的树种,包括花楸[Sorbus pohuashanensis(Hance)Hedl.]等28种。展开更多
文摘The species and diversity of urban natural herb plants in Jilin city were investigated and studied in this paper. The result showed that there were 80 species of herb plants, with 32 families and63 genera. The species of composite plant was the most more than the other families, and the gramineous species was the second one, then the polygonaceae species etc. According to thespecies importance value, the dominance of Chenopodium Glaucum was the first largest, the second to Plantsgo asiatica, Chenopodium Album and Echino chloa frumentacea etc. The diversity indexes on family, genus and species were calculated, and the Shannon-Wiener indexes were orderly 1.0670, 1.4214 and 1.5645, the evenness indexes were 0.3079, 0.3431 and 0.3570, and the dominant indexes were 0.1238￡?0.0629 and 0.0424 in turn.
