信阳师范学院学报（自然科学版）
信暘師範學院學報（自然科學版）
신양사범학원학보（자연과학판）
JOURNAL OF XINYANG NORMAL UNIVERSITY(NATURAL SCIENCE EDITION)
2015年
1期
68-72
,共5页
属多样性%纬度格局%区系起源%种子植物%云南地区
屬多樣性%緯度格跼%區繫起源%種子植物%雲南地區
속다양성%위도격국%구계기원%충자식물%운남지구
genus diversity%latitudinal pattern%floristic origins%seed plants%Yunnan regions
利用大尺度的种子植物物种分布信息，探讨了云南地区种子植物属多样性的纬度分布格局与区系起源的关系．结果表明：起源于热带地区的种子植物属多样性与纬度梯度呈负相关关系，这在一定程度上暗示着该植物类群存在着北上扩散的趋势；起源于温带地区的植物属多样性与纬度梯度呈正相关关系，暗示着其南下扩散的趋势．热带区系属的多样性纬度格局可能在一定程度上造成了总体属多样性在纬度梯度上递减．Rap-oport法则可能更适用于起源于热带地区物种多样性格局的解释．
利用大呎度的種子植物物種分佈信息，探討瞭雲南地區種子植物屬多樣性的緯度分佈格跼與區繫起源的關繫．結果錶明：起源于熱帶地區的種子植物屬多樣性與緯度梯度呈負相關關繫，這在一定程度上暗示著該植物類群存在著北上擴散的趨勢；起源于溫帶地區的植物屬多樣性與緯度梯度呈正相關關繫，暗示著其南下擴散的趨勢．熱帶區繫屬的多樣性緯度格跼可能在一定程度上造成瞭總體屬多樣性在緯度梯度上遞減．Rap-oport法則可能更適用于起源于熱帶地區物種多樣性格跼的解釋．
이용대척도적충자식물물충분포신식，탐토료운남지구충자식물속다양성적위도분포격국여구계기원적관계．결과표명：기원우열대지구적충자식물속다양성여위도제도정부상관관계，저재일정정도상암시착해식물류군존재착북상확산적추세；기원우온대지구적식물속다양성여위도제도정정상관관계，암시착기남하확산적추세．열대구계속적다양성위도격국가능재일정정도상조성료총체속다양성재위도제도상체감．Rap-oport법칙가능경괄용우기원우열대지구물충다양성격국적해석．
On the basis of distribution information at large-scale,the latitudinal patterns of genus diversity of seed plants in Yunnan with a regard to their floristic origins were examined .The results showed that tropical genus diversity was negatively correlated with latitudinal gradient , suggesting a south-to-north spreading trend;however , temperate ge-nus diversity showed positive correlation with latitudinal gradient , implying a north-to-south spreading trend .The total genus diversity and diversity of tropical genera shared the similar decreasing latitudinal patterns .It is suggested that Rapoport’s rule may be more applicable to explain the latitudinal patterns of species diversity originated from tropical regions .It is also suggested that the hypothesis of floristic origins is probably one of the effective theories to explain lat -itudinal patterns of taxa diversity .
