河北省东、西部自然保护区植物区系比较研究

Comparative study on the flora of nature reserves in the East and West of Hebei province

基于自然保护区科学考察报告中的高等植物名录,对河北省东、西部自然保护区高等植物的植物种类组成进行统计分析,并采用Czehanow ski相似性系数,对两个自然保护区植物区系的相似性进行对比分析。结果表明:西部的驼梁自然保护区共有高等植物143科552属1187种,其中单种科和单种属所占比例达56%;东部的茅荆坝自然保护区共有高等植物141科497属1091种,其中单种科有15科,占总科数46.67%、单种属有70属,占总属数的49.65%。两个自然保护区高等植物科、属、种的相似性系数分别为88.73%、91.71%、69.62%,表明两区植物区系间的关系较为紧密,也反映出两区环境和自然演化史具有共同性。

Based on the list of higher plants in the scientific research report of the nature reserve,statistical analysis was carried out on the plant species composition of higher plants in the eastern and western nature reserves of Hebei province,and the similarity coefficient of Czehanow ski was used to map the flora of the two nature reserves.The similarity was compared and analyzed.The results show that:(1)There are 1187 species of 552 genera and 155 genera in the western Cameling nature reserve,of which 56%are single species and single species;and there are a total of 141 species in the eastern Maojingba nature reserve.There are 1091 species of 497 genera,including 15 families of single species,accounting for 46.67%of the total families,and 70 genera of single species,accounting for 49.65%of the total genera.(2)The similarity coefficients of higher plant families,genera and species in the two nature reserves were 88.73%,91.71%,and 69.62%,respectively,indicating that the relationship between the two floras is relatively close,which also reflects the environment and nature of the two districts.Evolutionary history has a commonality.