摘要
黄河中游河漫滩共有种子植物818种,隶属于84科358属。区系组成中含20种以上的科有11科,属、种数分别为205属、513种,占整个区系种子植物总属数的57.26%和总种数的62.71%,它们构成了黄河中游河漫滩植物区系的基本成分。对属、种的地理成分分析表明,在种、属水平上均以温带成分占优势。但是,各温带成分的优势度在属、种水平上表现出差异性。相对整个华北区系而言,区系内热带性质的属较为丰富,但不是典型的热带分布属。另外在种的水平上,区系特有现象比在属水平上明显。
The diversity of seed plant is rich in the flood plain of MidYellow River, including 84 families, 358 genera and 818 species. There are 11 families, making up 5726% of the total genera and 6267% of the total species, which form the basic frame of the composition in this area. The dominant families of flora composition of the vegetation are Compositae (101 species), Cramineae (77 species), Cyperaceae (62 species) and Leguminosae (51 species). In composition of the floristic geographical elements of the genera and species, the temperate elements take dominant position. But it represents distinctiveness between genus level and species level. Although it's an unmarkble characteristic, the tropic genera take the advantage in this flora in contrast to Huabei one. In addition, such endemic to China phenomenon at species level is most marked to that at genera level.
出处
《武汉植物学研究》
CSCD
2003年第4期332-338,共7页
Journal of Wuhan Botanical Research
基金
荷兰世界自然保护联盟(IUCN)委员会资助
山西省自然科学基金资助项目(981023)。
