保定市绿色廊道植物群落组成和结构研究

研究城市绿色廊道植物群落的结构、功能及其优化,对城市绿色廊道的建设有着重要的理论与实际意义。该研究实地调查了保定市绿色廊道170个路段（绿带或河流）共260个植物群落,共记录人工种植植物86种,乔木∶灌木∶草本植物为1.00∶0.68∶0.47;分属44科68属;乡土树种与外来树种比例约为2∶1;乔木单层结构的群落占有优势地位,占全部群落的44.61%;绿带廊道植被覆盖率最高,绿色道路廊道植被覆盖率最低。建议在今后的绿色廊道的建设中,适量增加乔木、灌木、草本植物的种类并大幅提高乔灌草结构群落的比例。

Plant Community Composition and Structure of Green Corridors in Baoding

The study on the plant community structure,function and their optimization had important theoretical and practical significance to the construction of urban green corridors.Through the field survey of 260 plant communities on 170 roads(green belts or rivers) of green corridors in Baoding,a total 86 species of cultivated plants were recorded,belonging to 68 genera of 44 families;arbor : shrub : herb was 1.00∶0.68∶0.47;native species : exotic species was 2∶1;the community of single-layer arbor structure held a dominant position,occupying 44.61% of the whole community;green belt corridor plants covered the largest,while the green road corridor plants covered the smallest.In the future construction of green corridors,it was suggested to appropriately increase the species of arbors,shrubs and herbs and substantially improve the proportion of arbor,shrub and grass structure community.