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当前位置: 首页 > 文章 > 浑善达克沙地榆树年轮结构对气候变化的响应 干旱区研究 2015,32 (1) 80-87
Position: Home > Articles > Response of Tree-ring Structure of Ulmus pumila var. sabulosa to Climate Change in the Otindag Sand Land Arid Zone Research 2015,32 (1) 80-87

浑善达克沙地榆树年轮结构对气候变化的响应

作  者：
陈晶晶;李钢铁;秦艳;刘洪娥;张国盛;黄荣凤
单  位：
内蒙古太仆寺旗林业局;内蒙古农业大学生态环境学院;中国农业科学院草原研究所;中国林业科学研究院木材工业研究所
关键词：
沙地榆;年轮宽度;早材宽度;晚材宽度;气候因子;浑善达克沙地
摘  要：
以浑善达克沙地榆树为材料,采用年轮气候学分析方法,研究年轮结构特征及其时序列变化,分析年轮宽度、早材宽度和晚材宽度年表的敏感度、信噪比等基本统计量以及年轮结构指标对气候因子的响应,目的是为浑善达克沙地过去气候重建提供依据。结果表明:沙地榆具有典型的环孔材结构,早晚材界限明显。年轮结构指标中的早材宽度、晚材宽度与年轮宽度时序列变化趋势基本一致,特别是晚材宽度与年轮宽度间的相关系数达到0.98(P<0.001)。年轮宽度年表和晚材宽度年表的平均敏感度、信噪比以及样本总体代表性明显高于早材宽度年表。通过差值年表和标准化年表各指标的比较,认为差值年表更适合用于年轮气候学分析。用差值年表的年轮指数值与温度和降水进行相关分析和响应函数分析,沙地榆的年轮结构指标与多项气候因子间存在显著的相关关系,说明沙地榆的年轮结构指标可以用来重建该地区的过去气候。
译  名：
Response of Tree-ring Structure of Ulmus pumila var. sabulosa to Climate Change in the Otindag Sand Land
作  者：
CHEN Jing-jing;LI Gang-tie;QIN Yan;LIU Hong-e;ZHANG Guo-sheng;HUANG Rong-feng;Inner Mongolia Agricultural University Ecology and Environmental Science;Research Institute of Wood Industry,Chinese Academy of Forestry;Grassland Research Institute,Chinese Academy of Agricultural Sciences;Forestry Bureau of Taibus Banner;
关键词：
Ulmus pumil var.sabulosa;;tree ring width;;earlywood width;;latewood width;;climatic factors;;Otindag Sandy Land
摘  要：
The tree ring structure and time series variation of Ulmus pumila var. sabulosa in the Otindag Sand Land were researched based on the theory and technology of dendrochronology. The responses of the basic statistical results,such as the sensitivity and signal-to-noise ratio of tree ring width,earlywood width and latewood width chronologies,were analyzed. The purposes of this study were to provide the basis for reconstructing the paleoclimate in the Otindag Sand Land. The results were that there was a significant boundary between earlywood and latewood,because elm has a typical ring porous wood structure. The trends of time series variation of ring width,earlywood width and latewood width were consistent,especially the correlation between latewood width and tree ring width was as high as 0. 98( P < 0. 001). Mean sensitivity,signal-to-noise ratio and expressing population signal of latewood width and tree ring width were higher than those of earlywood width. The compared results revealed that RES was more suitable to be used to analyze tree ring width and climate change.

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