广西被子植物科的区系地理成分分析  

Floristic Analysis of Angiospermous Families in Guangxi

作　　者：苏志尧[1,2] 刘蔚秋[1,2] 廖文波[1,2] 张宏达[1,2] 

机构地区：[1]华南农业大学林学院 [2]中山大学生物学系

出　　处：《中山大学学报（自然科学版）》1996年第S2期70-75,共6页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金

摘　　要：对广西被子植物区系科的组成和地理成分进行了分析．结果表明，广西被子植物区系地理成分多样，而以热带科及热带至亚热带科占优势，两者合计占总科数的５３．７％；世界科和亚世界科、热带至温带科、温带科以及亚洲特有科分别占１９．４％，１２．０％，９．７％以及５．１％，这种复杂的地理成分是与广西的纬度地带性相适应的．该区被子植物的优势科分属于各类成分，而其表征科则大部分为热带亚热带科．表明在科级水平上。An analysis of the angiospermous families in Guangxi shows that the flora has a diverse geographical elements, with an overwhelming number of tropical and tropical-to-subtropical families accounting for 53 7%; cosmopolitan and subcosmopolitan, tropical-to-temperate,temperate and those endemic to Asia account for 19 4%,12 0%,9 7% and 5 1% of the total family number respectively. This phenomenon is the result of the broad la titudes and diversified habitats in Guangxi. It is shown that the dominant families are of va rious geographical elements, whereas most of the typical families are tropical and subtropical. This indicates that, in family level, the angiospermous flora of Guangxi is an integral part of the Cathaysian Flora.

关 键 词：被子植物 科 植物区系 地理成分 

分 类 号：Q948.5[生物学—植物学]