Pollen Morphology and Ecological Significance of Nine Hygrophyte Species at Sevenstar Lake Area in the Bashang Area of Hebei Province

河北省坝上七星湖夏季9种湿生植物花粉形态及其生态意义(英文)

ObjectiveThis study aimed to investigate the morphological characteristics of pollen from nine hygrophyte species at Sevenstar Lake area in the Bashang Area （the southern edge of Inner Mongolian Plateau） of Hebei Province, as well as their ecological significance. MethodThe pollen morphology of nine hygrophyte species distributed at Seven Star Lake area was observed and studied by using an optical microscope, and morphological characteristics like size, shape, surface ornamentation were recorded. ResultsPollen grains were globose, subglobose prolate spheroidal; germination aperture had five types, namely, 3-groove, 6-groove, 3 （4）-groove, 3-colporate, 3 （4）-colporate; ektexine possessed four kinds of ornamentation： reticulate, striped, spiny, granular. Meanwhile, the environmental indication significance of these nine hygrophyte species was also discussed according to their habitats, origin and distribution. ConclusionThe study provides the basis of modern palynology for the study of ancient environment, ancient vegetation and paleoclimate.

[目的]研究河北省坝上七星湖夏季9种湿生植物花粉的形态特征及其生态意义。[方法]应用光学显微镜对七星湖9种湿生植物进行花粉形态观察和研究,记录其花粉的大小、形状、表面纹饰等形态特征。[结果]花粉粒呈球形、近球形或长球形;花粉的萌发孔主要有3沟、6沟、3-4沟、3孔沟、3~4孔沟等5种类型;其外壁纹饰主要包括网状、条纹状、具刺、颗粒状等4种类型。同时根据这些植物的生境、产地及分布,讨论了它们的生态环境指示意义。[结论]该研究为古环境、古植被、古气候研究提供了现代孢粉学依据。