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作 者 ：王荷生 张镱锂 黄劲松 吴志芬 赵善伦 王合生 张振万 陈彦生 张春林

期 刊 ：云南植物研究 1995年 17卷 S7期 页码：1-3

关键词：华北地区；种子植物；区系研究；

Keywords:North China region,

摘 要 ：本文对于华北地区（未包括秦岭）种子植物区系进行了科、属、种不同水平的统计和区系分析，地区级以下的区系分区，根据古植物学资料和现代区系分析探讨华北植物区系的起源。得出5点主要结论：(1)华北是我国北方植物区系最丰富地区，约3358种，隶属于151科，919属；(2) 植物区系主要是温带性质，具有与亚热带一热带区系的过渡性，如各类温带成分属占66％强,热带成分属约占24％；（3）特有性程度较低，本地区只有8个或10个特有属，约600个特有种和变种，分别只占本地区属和种数的10％和15％；(4)根据植物区系和植被统一发生的原理，植物种的地理成分结构，地方特有种的分布和地貌、气候特征，华北植物地区可再分为4个亚地区和11个小区：即辽东一山东半岛亚地区，华北平原亚地区、华北山地亚地区和陕北黄土高原亚；（5）华北植物区系主要是老第三纪本地起源和发展的，部分可能来自东北亚，中国西南喜马拉雅和横断山脉，少数来自中亚或西北干旱地区。

Abstract:This paper deals with the floristic statistics, analysis, regionalization and studying on the floristic origion of the seed plants in the North China Region (excluding Qingling Mts.)There are five main conclusions as follows: (1) North China is the richest region of the north part of China in flora with about 3358 species belong to 151 families and 919 genera. (2) It is chiefly temperate in nature and has a certain transitional nature with tropical and subtropical flora, for it has more than 66 of various temperate elements and about 24 of tropical ele-ments. (3) It has a lower level ofendemism with only 8 or 10 genera, about 600 species and vari-ety endemic to this region, that is only 10 and 15 of the total of the genera and species. (4) According to the structure of geographical elements of species, the distribution of local endemic species and some physiogeographical features, the region may be floristically divided into 4 subregions and 11 districts: subregions of Liaodong-Shandong Peninsula, North China Plain, North China Mountain and Loess Plateau in the northern Shaanxi. (5) Based on the analysis of paleobotanical data and recent floristic data, the origion of this flora in North China may be as-sumed as autochotonous since Tertiary up to date. Besides, many elements are from Northeast Asia, Himalaya and Hengduan Mts respectively, but only a few from Central Asia or arid-re-gion of Northwest China.

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