河北省天然草地禾本科植物的生活型、生态型及区系分析

Analysis of living form, ecotype and flora character in natural grassland of Hebei province

对河北省天然草地禾本科植物的生活型、生态型及区系特征进行了分析，结果表明，多年生草本为优势生活型，占78.4%；生态型以中生植物为主，占77.2%，旱生植物占16.0%，湿生植物仅占6.8%；植物区系成分多样，温带分布属最多达42属，占总属数的57.5%，其次为热带分布属，有24属，占32.9%。

The analysis result of living form, ecotype and flora character of gramineous plants in natural grassland of Hebei province indicated that the dominant living form was perennial herbaceous, which amounted 78.4% of total. The ecotype components consisted of 77.2% of mesophyte, 16.0% of xerophyte and 6.8% of hygrophyte, respectively. A flora diversity was found. Forty-two genus, 57.5% of total, were temperate distribution and twenty-four genus, 32.9% of total, were tropical distribution.