新乡市与其他5市园林植物区系特征比较  

Comparative Study of Landscape Plants Flora Characteristics between Xinxiang and other 5 Cities

作　　者：周会萍[1] 刘兴洋[1] 

机构地区：[1]新乡学院生命科学与技术系,河南新乡453003

出　　处：《福建林业科技》2014年第2期118-120,131,共4页Journal of Fujian Forestry Science and Technology

基　　金：国家科技支撑项目(2009BADB2B0601)

摘　　要：采用实地调查和查阅文献资料相结合的方法,对河南省新乡市园林植物区系与其他5市(石家庄、信阳、成都、昆明、湛江)园林植物区系特征进行比较分析,结果表明,新乡市园林植物共有74科161属311种(包括变种和变型),其中裸子植物共有5科11属23种,被子植物有69科150属288种;13个优势属中有10属是北温带分布类型,表明本区的种子植物区系具有明显的北温带性质。根据热带成分(R)属与温带成分(T)属的比值大小对新乡市与其他5市的园林植物区系进行比较,结果显示:随纬度的升高,R/T值呈下降趋势,即热带性质降低,温带性质加强,表现出明显的纬度地带性规律;总体上,随纬度升高,物种属数减少。Based on the field survey and the known dada ,the flora of the landscape plants in Xinxiang and other 5 cities were ana-lyzed.The result showed that there were about 311 species of landscape plant （ including varieties and forms ） belonging to 161 gene-ra in 74 families in Xinxiang City ,23 species belonging to 11 genera and 5 families were gymnosperm ,as well as 288 species of angi-osperm belonging to 150 genera and 69 families.There were 10 North Temperate genera in the 13 dominant genera ,which showed that the north temperate elements were dominant of the floristic composition.According to the ordination of R/T（ tropic genera/tem-perate genera）,the ratio of R/T took on a descendant trend as the increasing of latitude to the data of 6 areas,and an apparent rule on latitude zonation of floristic variation was expressed.As a whole,with the increasing latitudes the number of genera declined.

关 键 词：园林植物 区系特征 新乡市 

分 类 号：S688[农业科学—观赏园艺] Q948.5[农业科学—园艺学]