应用排序分析藓类植物分类群分布与气候因素的关系

以我国21个山地藓类植物区系和气象资料为基础,应用典范对应分析(CCA)和除趋势典范对应分析(DCCA),比较了21个山地中藓类植物61个科,曲尾藓科(Dicranaceae)23个属、曲柄藓属(Campylopus)17种及曲尾藓属(Dicranum)35种分布与年均温度、>10℃积温、1月均温、7月均温、年均相对湿度、年均降雨量、年有雾天数、年有霜天数和年日照时数的关系,通过排序进行了直观的展示;同时还应用典范对应分析直观地反映了包括长白山在内的我国9个山地苔藓植物地理成分组成上的相似性及它们与气候因素间的关系.本文研究表明将DCCA和CCA应用到植物区系地理学研究上是可行的.

Ordination analysis on relationship between bryophyte distribution and climatic factors

Based on the data of climate and bryoflora in 21 mountainous regions of China, 61 moss families,23 genera of Dicranaceae,17 species of genus Campylopus and 35 species of genus Dicranum were analyzed by Canonical Correspond Analysis(CCA) and Detrended Canonical Correspond Analysis (DDCA) to reveal their distribution relationships with nine climatic factors,including annual average temperature,January average temperature,July average temperature,annual average rainfall,annual average fog days,annual average frost days and annual average light hours.The similarity of geographical elements among nine mountains in China and their relationships with climatic factors were also analyzed.The methods of applying DDCA and CCA to analyze the relationships between bryophyte and climatic factors were thus introduced.The studies indicate that CCA and DCCA are applicable in florology and phytogeography.