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根据滇西地区７条实测剖面近１７０个孢粉样品的分析结果，对该地区新第三纪的孢粉组合特征进行了分析，并以此为基础反演了该时期的古植被、古气候及地形地貌特征，分析了滇西地区新第三纪自然环境的变化历史。认为：滇西地区新第三纪的古植被主要经历了由含针阔叶林→针阔叶混交林→山地针叶林→亚高山阴暗针叶林的变化；古气候由热带、亚热带向亚热带夹暖温带方向变化；地形地貌经历了由开阔的山间盆地与低山丘陵相间→准平原→高原的演化过程。
According to the analysis results of nearly 170 sporo-pollen samples in 7 measured sections in western Yunnan, the characteristics of the sporopollen assemblages in the Neogene in this area were analyzed. Based on this, the paleo-vegetation and paleoclimate And the topographic and geomorphological features, the changing history of the Neogene in the western Yunnan is analyzed. It is considered that the paleotropical vegetation in the Neogene in western Yunnan mainly experienced changes from coniferous and broadleaved forest → coniferous and broad-leaved mixed forest → mountain coniferous forest → dark-shelled coniferous forest in sub-alpine region. The paleoclimate changed from the tropical and subtropical regions to the subtropical Warm and warm in the direction of change of the warm topography; topography has experienced from the open mountain basin and the hilly phase → quasi-plains → plateau evolution.