槭叶铁线莲个体形态、生长特性及集群构成状况研究

对河北省易县葫芦峪沟谷中新发现的槭叶铁线莲,从个体形态、生长特性、生境状况和集群构成方面进行调查研究。结果表明:葫芦峪沟谷分布有35个槭叶铁线莲集群,个体数量达3166丛,是其分布区中最主要的分布地点;槭叶铁线莲主要分布于葫芦峪沟谷两侧中坡以下的半阳坡和半阴坡垂直崖壁上,生境特殊;槭叶铁线莲主要通过茎基及以下部位萌发新枝,新枝一般不再产生分枝、仅顶端不断伸长生长、开花、长叶并弯曲下垂,形成悬垂状灌木,其个体形态和生长特性独特,对环境具有较强的适应性;槭叶铁线莲集群大小和面积差异较大,不同集群年龄结构存在差异,总体处于稳定或增长状态,种群整体较为安全。

Study on the Individual Morphology,Growth Characteristics and Cluster Composition of Clematis acerifolia

The population of Clematis acerifolia newly found in Huluyu Valley,Yixian County,Hebei Province,was investigated from the aspects of individual morphology,growth characteristics,habitat status and cluster composition.The results showed that there were 35 clusters of C.acerifolia in Huluyu Valley,and the number reached 3166 tufted individuals,the place was the most important distribution area;C.acerifolia mainly distributed on the vertical cliffs of the half sunny slope and the half shady slope below the middle slope on both sides of Huluyu Valley,the habitat is special.The individual growth mode of C.acerifolia is unique,mainly through the germination of new branches at the stem base and below,the new branches generally no longer produce branches,only the top of the main stem is continuously elongating,flowering,growing leaves and bending drooping,forming a hanging shrub,and the individual morphology and growth characteristics have strong adaptability to the environment.The individual number and area size among C.acerifolia clusters were different,and the age structure were also different.All clusters were stable or growing in number,and the population was relatively safe as a whole.