浙江省石荠苧属植物群落的物种多样性

通过样方调查,应用物种多样性指数和群落均匀度等指标对分布在浙江省区域内不同生境中石荠属植物进行分析,研究一年生石荠属植物所在群落的群物种多样性。结果表明：（1）石荠苧属植物所在群落科属组成分散,不同类型群落的物种组成差异较大,群落结构简单;（2）石荠苧属植物所在群落物种多样性指数较低,多样性指数按乔木—灌木—草本依次提高;⑶杭州石荠苧、苏州荠等对光照要求高,小花荠、小鱼仙草等在疏阴下生长良好;⑷干旱的生境中以苏州荠、华荠、杭州石荠分布最多,较阴湿的生境中则以石荠、小花荠、小鱼仙草分布为多。

Plant Diversity of the Mosla Community in Zhejiang Province

The paper analysis the species richness,species diversity index and community evenness in different plots and layers of the community of Mosla in Zhejiang Provcince,and Mosla species is an annual herb(Labiatae).The results are as given below: 1)There are 181 species of vascular plants belonging to 65 families and 139 genera.The number of species for tree was little in the community of Mosla.There are various plants in this community and constitutes of family and genus are discrete in community containing Mosla species.There is a great difference in constitutes of species in different communities and community structure is simple.2) The species diversity is low in this community,and the species diversity of herb layer is the highest,and heighten layer from arbor,shrub to herb layer.3) Mosla soochowensis and M.hangchowensis need sufficient light.M.cavaleriei and M.dianthera need shade environment.4) In arid habitat,soochowensis,M.chinensis and M.hangchowensis spread widely.But in shade environment,M.scabra,M.cavaleriei and M.dianthera were seen frequently.