摘要：

云南西部羊邑和龙陵地区晚上新世孢粉组合均以被子植物占优势，蕨类和裸子植物次之，藻类类群少。龙陵孢粉组合比羊邑孢粉组合含有更丰富的亚热带被子植物成分；裸子植物类群相对较少；蕨类类群较多，但孢子含量低。与研究地区现生植被对比研究的结果显示羊邑孢粉组合的大部分类群来自常绿针阔叶混交林，现在分布于羊邑地区海拔2800—3100m的地带，其余部分来自海拔3200m以上的云冷杉林；而龙陵孢粉组合的大部分类群来自山地湿润常绿阔叶林，分布于今日龙陵地区海拔1600—2500m的地带，其余部分来自海拔2300—2900m的常绿针阔叶混交林。这些云南西部晚上新世植被反映了湿润的亚热带山地立体气候。

Abstract:

 Late Pliocene palynofloras of both Yangyi and Longling are dominated by angiosperms, along with a moderate number of ferns and gymnosperms, and a few algae. Compared with Yangyi playnoflora, Longling palynoflora contains more abundant subtropical elements of angiosperms, more ferns and less gymnosperms. Based on comparison with the vertical zones of modern vegetations, most elements of Longling palynoflora derived from the montane humid evergreen broad-leaved forest at elevation of 1600—2500m, with less contributions of the evergreen coniferous and broad-leaved mixed forest from 2300 to 2900m, whereas most of Yangyi palynoflora derived from the evergreen coniferous and broad-leaved mixed forest at elevation of 2800—3100m, with less contributions of evergreen coniferous forest above 3200m. Both Late Pliocene vegetations reflect a mountain subtropical climate with humidity.