中文摘要：

作为 Hoiocene 气候的好指示物，高山的树带界线的变化在地质、历史的时期和现代时间期间是许多环境因素的影响的摹拟的结果。作为在 Xinjiang 的 Tianshan 山的北斜坡上的多山的针叶树森林的主导的树种类， Picea schrenkiana 和它的人口尺寸的分发对气候的变化敏感。 Huashuwozi 和附近的 Xiaoxigou 的典型自然侧面考古学的侧面，在 Quanzijie 定位了镇区，在 Xinjiang 的 Jimusaer 县，被选择分析并且比较相对高分辨率的花粉记录，并且到measure~( 14 )，标明日期的 C 和为炭碎片的微观结构在 Xiaoxigou 包含了的 SEM (扫描电子显微镜)介绍“ s 文化层。结果在这二侧面显示出那， Picea 的高百分比(超过20%和35%，分别地)出现在一样的时期的阶层( 2000 - 1300 一 BP )，它对应于炭碎片“ s 在 Xiaoxigou 文化层包含的 Piceaschrenkiana 变老。这些结果信服地在 2000 的时期期间揭示了那 - 1300 一 BP，为 Picea 的树带界线。在 Xinjiang 的北斜坡 ofTianshan 山上的 schrenkiana 与礼品相比由大约 330m 衰退了。

英文摘要：

As a good indicator of Holocene climate, the fluctuation of alpine timberline is a synthetical result of impacts of many environmental factors during geological and historical periods and modern times. As the dominant tree species of mountainous conifer forests on the northern slope of Tianshan Mountains in Xinjiang, the distribution of Picea schrenkiana and its population size are sensitive to climatic change. The typical natural profile of Huashuwozi and the nearby Xiaoxigou archaeological profile, located in Quanzijie Township, Jimusaer County in Xinjiang, were chosen to analyze and compare the relative high-resolution pollen records, and to measure 140 dating and SEM （scanning electron microscope） microstructure for charcoal fragments contained in Xiaoxigou profile＇s cultural layers. The results show that in these two profiles, the high percentages of Picea （more than 20% and 35%, respectively） appeared in the stratum of the same period （2000--1300 a BP）, which corresponds to the charcoal fragment＇s age of Picea schrenkiana contained in Xiaoxigou cultural layers. These results convincingly revealed that during the period of 2000 --1300 a BP, the timberline for Picea schrenk/ana on the northern slope of Tianshan Mountains in Xinjiang declined by about 330m compared with the present.