| This paper takes Taihang Mountain Grand Canyon Scenic Area as the research object,Using typical sampling method, we study the basic components of the scenic flora, plant communities distribution regular pattern along with terrain and analysis of plant diversity through the comprehensive index of evenness index、diversity index and richness index, which provide a basis for plant research in Taihang Grand Canyon Scenic. The main results of research are as follows:(1) Taihang Grand Canyon Scenic floristic composition is relatively abundant, among which there are wild vascular plants 98 families,352 genera and 540 kinds. It mainly distributes some coniferous forests, montane evergreen broad-leaved forest, mountain deciduous forests, irrigation Cong and shrub.(2)Vegetation types vary from different elevation、slope direction and slope. Among them, there are some deciduous broad-leaved forest distribute in the altitude of 500-800m, evergreen coniferous forest in the altitude of 800-1400m, and shrub mostly distribute above 1400m. Plant types are the most in the semi sunny slope, followed with half shady slope and shady slope, but little in the sunny slope. The plant community types are the least in the slope of 40°— 50°, while abundant in the slope of 20°— 30°.(3) There are significant difference between the tree layer, shrub and herb layers. The fluctuations of species diversity is little in tree layer and herb layer but present enormous fluctuations in shrub layer. There is no significant difference in evenness between the tree layer, shrub layer and herb layer.(4) Through the investigation and study of the plant diversity in Taihang Grand Canyon Scenic,we find some issues in the conservation of plant diversity and provide relevant recommendations. |
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