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在天山西部根据生境特点设置90个1m×1m草本样方,研究了天山云杉林草本植物的物种多样性季节动态。结果表明:共调查到162种草本植物,隶属于34科、110属。草本植物多样性季节变化明显,生长季内物种数、Gleason丰富度指数、Simpson和Shannon-Wiener多样性指数均呈单峰型分布,即6、7月最高,4、9月最低。不同生境草本植物多样性变化明显,阴坡和林缘生境草本植物多样性最高,林冠干扰明显的生境中物种多样性最低。因此,草本植物多样性季节变化受微生境和人为干扰影响。
Ninety 1m × 1m herbaceous quadrats were set up in the west of Tianshan according to habitat characteristics and the seasonal dynamics of species diversity of the herbaceous plants in the Picea crassifolia forest were studied. The results showed that 162 species of herbs were found, belonging to 34 families and 110 genera. The seasonal variation of herb diversity was obvious. The species number, Gleason richness index, Simpson and Shannon-Wiener diversity index showed a single peak distribution during the growing season, which was the highest in June and July and the lowest in April and September. The diversity of herbaceous plants changed significantly in different habitats, with the highest diversity of herbaceous plants in the shady and forest margins, and the lowest species diversity in the canopy disturbances. As a result, seasonal changes in herb diversity are affected by both microbiological and anthropogenic disturbances.