OALib Journal期刊
ISSN: 2333-9721
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柴达木东缘山地千年祁连圆柏年轮定年分析
DOI: 10.11821/xb200301011, PP. 90-100
Keywords: 柴达木东缘山地,树木年代学,轮宽变化型,树轮年表,交叉定年,千年祁连圆柏
Abstract:
针对中国干旱区生长的树木缺失轮和伪轮多等具体情况,及常规树轮定年方法应用于中国干旱地区时所遇到的问题,本文以柴达木盆地东缘山地上生长的千年祁连圆柏树轮定年工作为例,详细探讨了在中国干旱地区建立树轮定年年表的方法体系及技术路线,对常规的工作方法提出新的改进。这包括采样中要采集不同树龄、不同小生境且大复本量的样本;交叉定年工作要按一定的工作程序;安放缺失轮时要同时考虑窄轮和宽轮变化的一致性;用多种方法对定年和轮宽量测值进行检验等。这些方法的具体应用有助于在中国干旱地区建立定年准确、千年尺度的树轮年表。
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