浙江省石荠苧属植物的群落结构特征

Community Characteristics of Mosla in Zhejiang Province

石荠苧属植物是唇形科一年生草本植物,在种间分化的研究上具有重要意义。在浙江省区域内的不同生境中设置样地,进行群落学调查,结合生境适应、重要值、生活型和群落生态外貌特征的分析,研究石荠苧属植物所在群落的群落结构。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)苏州荠苧、华荠苧、小鱼仙草能成为所在群落的优势物种,石荠苧、小花荠苧和杭州石荠苧在各自群落中较少形成优势种;(3)小花荠苧能与石荠苧伴生,石荠苧能伴生在小鱼仙草的群落中,苏州荠苧可见于华荠苧的群落生境中;(4)灌木层与草本层构成了群落主体,但两者在不同群落中互有优势;(5)小型叶、草质叶在群落中占绝对多数,石荠苧属植物生长在水热条件差异较大的环境中。

Mosla species is an annual herb （Labiatae）, it is important for the study on i,terspecific differentiation. Different habitats were somoled to investigate community structure in Zhejiang Province by using ecological characterastics of community such as habitat acclimation, important values and life-forms . Major results include： 1） 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） Mosla soochowensis, M. chinensis and M. dianthera may be predominant species in its community, while M. scabra, M. cavaleriei and M. hangchovensis may be predominant species in their community rarely. 3） M. cavaleriei grows along with M. scabra, and M. scabra grows along with M. dianthera, and M. soochowensis grows along with M. chinensis. 4） Shrub and herb constitute the principal parts of community, however, shrub was predominant in a type of community and herb was predominant in another type of community. 5）Mosla species grow in variable soil moisture and variable light environments.