最近5万年是人类演化和发展的重要时期，也是气候环境变化的敏感时段。选择人类演化的关键地区，重建人类的生活和生存方式，揭示人类适应环境的方式和策略，是“人地关系”研究的重要课题。我国广西地区具有独特的植被、气候和环境背景，既是古人类演化和迁徙的重点地区，也是应对气候突变和气候事件的理想避难所，保存了晚更新世以来连续的人类演化序列和丰富的考古遗存，是早期人类生存方式和环境适应研究的难得实验场。本课题拟选取广西地区5万年以来连续的洞穴堆积遗址（娅怀洞、白莲洞和宝积岩遗址），采用AMS14C测年，并结合光释光测年，建立研究点的年代框架，主要利用植硅体这一重要的植物考古指标，辅以石制品和牙结石的淀粉粒分析，大植物遗存等，获取古人类植物资源利用的类型和方式等信息。基于孢粉和元素地球化学等环境指标，重建遗址的环境背景，探讨植物资源利用的演替及其与气候环境变化的关系，揭示人类对环境适应的方式和策略。

The latest 50 thousand years is an important period for climate change, which has a profound impact on human evolution and development. In the study of the relationship between man and land, it is very important to select the key areas and important periods of human evolution, to reconstruct the human life, and to reveal the ways and strategies of human being's adaptation to the environment. Guangxi Zhuang Autonomous Region has a unique geographical landscape pattern and unique vegetation and climate background, which is not only an important channel for the spread and migration of ancient humans but also an ideal refuge to avoid climate changes. It preserved the rich archaeological remains of the evolution and development of human beings, and provided a rare research site for the adaptive strategies of human survival and early environments. In this paper, a group of cave accumulation sites covering continuous 50 thousand years including the Yahuai Cave, Bailian Cave and Baoji rock from Guangxi Zhuang Autonomous Region will be selected for investigation. The dating framework is established by reconstructing AMS14C and OSL. Phytoliths are used to as an important plant archaeological index, supplemented by the analysis of the starch grains of stone products and dental calculus, to extract the plant information and analyze the relationship between the human use of plant resources and the utensil function. We will also restore the environment of sites through pollen records and other elemental geochemistry indicators and further explore the succession mode of utilization of plant resources and its relationship to climate change.