云南宜良上新世植物化石及植物—昆虫相互作用研究

植物与昆虫是陆地生态系统的重要组成部分，研究它们之间的相互作用关系以及这种相互关系对环境变化的响应机制是全面认识陆地生态系统的基础。本项目基于云南宜良盆地上新统茨营组中大量的植物化石标本和丰富的昆虫取食遗迹，系统研究茨营组植物群特征以及植物和昆虫的相互作用。在古植物系统分类的基础上，重建宜良上新世的植被类型，识别不同植物叶片中的昆虫取食遗迹类型，统计昆虫取食频率、取食多样性以及每种取食类型所占的比例，分析昆虫取食类型、取食频率和取食多样性在不同植物组合以及不同层位中的变化。结合古大气CO2浓度以及古气候变化分析，揭示大气CO2浓度和温度、降雨量等气候参数变化对植物与昆虫相互作用的影响。为研究上新世植物与昆虫的协同演化及其对环境变化的响应机制提供重要的依据和支撑。

Plants and insects herbivores are two major components of terrestrial ecosystem, and their interactions are various and developing in response to environmental change during the geological time. Consequently, studying the plant-insect interactions and how climate change shaped plant-insect interactions in the geological time are vital for structuring terrestrial ecosystems. Here we will study the ancient vegetation and plant-insect associations, based on the fossil specimens and foliages with well-preserved insect damages from the Ciying Formation of Pliocne in Yiliang, Yunnna Province. The information of the flora will be reconstruct based on accurate classification of fossil plants using cuticular features and leaf details, and the insect damage types in different foliage will be examined and documented using the damage-type system of Labandeira and his colleagues. Furthermore, Statistics on damage frequency, damage diversity and the percentage of each damage type will be carried out, in order to analyze the variation of plant-insect interactions in different strata and different plants assembly. Combined with analysis on palae-CO2 concentration and climate condition, we will explore how palae-CO2 and climate change affect plant-insect interactions. This study will contribute to the research of co-evolution of plant and insect in the Pliocene, and provide the plant-insect interactions response to environment change.