利用浑善达克沙地白音敖包采集的白扦树芯样本,使用传统宽度测量手段和图像分析手段建立了研究区域采样点的全轮、早材、晚材宽度年表。对比分析结果表明,研究区域内基于图像分析手段和传统宽度测量手段所获取的全轮宽度数据不存在明显差异。基于图像分析手段建立的全轮、早材及晚材宽度年表之间在全频域、高频域和低频域的相关系数均呈显著正相关,且3种年表在低频变化上比在高频域更为一致。过去142 a以来,全轮、早材、晚材宽度年表均具有2个低值阶段和2个高值阶段,且3个年表间的高低值变化阶段基本一致。与当地气象资料的相关分析结果显示,全轮、早材、晚材宽度年表均对气温表现出负相关,对降水变化的响应则不明显。而早材宽度与气温表现出的较高相关系数还说明了基于图像分析手段获取的该种数据具有作为气候代用资料的价值。 Based on white core logs collected from Baiyin obo in Hunshandak Sandy Land, the width, breadth and width of all round, earlywood and latewood of the sampling points in the study area were established by means of traditional width measurement and image analysis. The results of comparative analysis show that there is no obvious difference between all-wheel width data obtained by means of image analysis and traditional width measurement in the study area. The correlation coefficients of all round, earlywood and latewood width chronology based on image analysis were all significantly and positively correlated in the whole frequency range, high frequency range and low frequency range, High-frequency domain more consistent. Since the past 142 years, all-round, earlywood and latewood width chronologies have two low-value periods and two high-value periods, and the periods of high and low value changes among the three chronologies are basically the same. The correlation analysis with the local meteorological data shows that the annual chronology of the early spring and latewood widths is negatively correlated with the temperature and the response to the precipitation change is not obvious. The higher correlation coefficient between earlywood width and air temperature also shows that the data obtained based on image analysis has the value of being a proxy for climate.