作　　者： ;

机构地区： 江西农业大学

出　　处： 《江西科学》 1994年第1期28-33,共6页

摘　　要： 初步分析了江西种子植物区系热带性属的地理分布式样及其区系特征，将本省热带性种子植物４６５属划归为６种地理分布式样和７种间断分布式样。本区系地理成分复杂，以泛热带和热带亚洲分布型属占优势，并与世界各个热带植物区系有着广泛的联系。本区系间断分布类型多样，残遗植物类群丰富，稀危种类颇多，这都与地史变迁、大陆漂移和人类活动等影响密切相关。本区系由南亚热带至中亚热带向北亚热带逐渐过渡，成为许多热带性属的分布北界。 This paper studies the geological distribution patterns and their floristic characters of the tropical genera of spermatophyte flora in Jiangxi province. Four hundreds and sixty five tropical genera can be divided into 6 distribution patterns and 7 disjuncted distribution patterns.Main floristic characters of the tropical genera in this flora can be summarized fundmentally as follows: The genera of Pantropic and Tropical Asia are dominant types and this flora is connected extensively with these floras of the tropic areas. The disjuncted distribution shows various types.The flora is very rich in ancient and relic plants as well as in the species of the rare and imminent extinction plants. The flora of Jiangxi province transits gradually from south subtropics and mid-subtropics to north subtropics in China. The floristic elements are converged and transited from south to north in this province where is the north border of many tropical genera.

关 键 词： 种子植物区系 热带性属 分布式样

领　　域： [生物学]