求翻译：本文以中国南方四川攀枝花地区清坪乡剖面作为研究对象，通过对在清坪乡所采集的45个样品，进行14C年代的测定、粒度和环境磁学指标的实验分析，提取攀枝花地区清坪乡剖面沉积物中记录的过去环境变化信息。将提取的环境变化信息与所收集的该地区环境变化的历史文献记载相结合，探索讨论该区历史时期以来的环境演化。通过研究，本文主要得出以下结论：是什么意思？

Panzhihua, Sichuan, China Southern Qing Tsubosato profile as the object of study, analysis of 45 samples collected in the Qing Tsubosato 14c's experimental determination of particle size and environmental magnetism indicators extract the Panzhihua region Qing Ping past environmental changes recorded

This 4 in the south of China, Sichuan Panzhihua area rural profile as the ping, the object of study in the acquisition of the township and 45 samples, 14 C S measured, grain, and environmental indicators of the learning lab analysis, extraction Panzhihua area rural profile seems clear in the sedimen

This article by China south the Sichuan kapok area clear level ground township section plane took the object of study, through to 45 samples which gathers in the clear level ground township, carries on the 14C age the determination, the granularity and the environment magnetism target experimental a

This article in southern China Qing ping profile as a research object in panzhihua, Sichuan, by Qing ping 45 samples collected by the Heung Yee Kuk, 14C, particle size, and for the determination of indicators of environmental magnetism: an experimental analysis, extraction of Qing ping profile sedim

正在翻译，请等待...