中文摘要：

吉林长白山植被垂直地带性是欧亚大陆从温带到寒带植被水平地带性的真实对照。通过对长白山北坡不同植物群落21个样点表土花粉组合及其与群落组成数量关系的分析，结果发现：（1）木本植物花粉占76．1％，木本植物与草本植物花粉比值（AP／NAP）约3．2，以桦属和松属为主；（2）岳桦云冷杉林和岳桦林花粉组合能较好地反映植物群落组成；红松云冷杉林花粉组合只能部分反映植物群落外貌；红松林的花粉组合不能较好反映植被特征；高山苔原花粉组合未能反映植物群落数量特征；（3）主要花粉类型中松属和桦属花粉具超代表性，云杉属、杜鹃花科和蔷薇科花粉具低代表性；（4）通过花粉相对含量，DCA分析能较好地区分不同植被类型，但是红松林与红松云冷杉林、岳桦云冷杉林无法区分。本研究可为本区古植被与古环境恢复提供新证据。

英文摘要：

The vertical vegetation distribution in the Changbai Mountain is really representative horizontal vegitative zonation from temperate to frigid zones in Eurasia. In this paper 21 surface pollen samples from different communities of the northern slope of the Changbai Mountain are analyzed for numerical relationship between pollen assemblages and vegetational characteristics. The Arboreal Pollen is 76.1 % and AP/NAP（AP.. Arboreal Pollen, NAP.. Nonarbo- real Pollen） ratio is about 3.2. Betula and Pinus are the main pollen species in quantities. Pollen assemblages of Be- tula ermanii-Picea-Abies forest and Betula ermanii forest correspond well with their communities, Pinus koraiensis- Picea-abies pollen assemblages may represent the combinated characteristics of vegetational communities moderately, and Pinus koraiensis forest and alpine tundra pollen assemblages are not well associated with their numerical charac- teristics of plant communities. Pinus and Betula are over-represented, whereas Picea, Ericaceae and Rosaceae are un- der-represented pollen taxa. In addition, DCA （Detrended Correspondence Analysis） is effective to distinguish diffe- rent plant cummunities except for Pinus koraiensis forest, Pinus koraiensis-Picea-Abies forest and Betula ermanii-Pi- cea-Abies forest. The study provides a new evidence on reconstructing the palaeovegetation and palaeoenvironment in this region.