Tree-ring chronologies from Upper Indus Basin of Karakorum range, Pakistan.
Tree-ring chronologies from Upper Indus Basin of Karakorum range, Pakistan.
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发表时间：
2010
影响因子：
1.2
通讯作者：
Moinuddin Ahmed;M. Wahab;N. Khan;M. Zafar;J. Palmer
中科院分区：
文献类型：
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作者：
Moinuddin Ahmed;M. Wahab;N. Khan;M. Zafar;J. Palmer
四种针叶树种，即云杉、雪松、红松。前羔羊。和 Juniperus excelsa M. Bieb。采样自巴基斯坦喜马拉雅地区印度河上游盆地的七个流域。这项调查的目的是探索这些物种的树木水文学潜力。尽管是从不同地区采集的，但这些物种的核心样本显示出良好的种间和种内交叉匹配。 COFECHA 质量控制程序表明，这些物种的木材样本与主年代表的相关性为 0.68 至 0.92，平均灵敏度为 0.23 至 0.42。列出了这些物种的标准化年代年表，跨度从 212 年到 486 年，生长速度范围广泛。残差年表显示出较高的平均灵敏度 (0.205-0.411)，而一般来说，阿斯坦年表中记录了较高的序列相关性。表达群体信号 (EPS) 的值高于 0.850，这对于未来的高级树轮调查是令人鼓舞的。这表明这些年表对于树木水文学研究具有很大的潜力。然而，需要更大的样本量并将这些年表进一步延伸到过去。
Four coniferous species i.e. Picea smithiana (Wall.) Boiss, Cedrus deodara D. Don, Pinus gerardiana Wall. Ex Lamb. and Juniperus excelsa M. Bieb. were sampled from seven catchments in the Upper Indus Basin of Himalayan region of Pakistan. The purpose of this investigation was to explore dendrohydrological potential of these species. Core samples of these species show good inter-and intra-species cross-matching, despite being collected from different areas. The quality control program, COFECHA showed that wood samples of these species exhibit 0.68 to 0.92 correlation with master chronologies and 0.23 to 0.42 mean sensitivity. Standardized dated chronologies of these species are presented which span from 212 years to 486 years with a wide range of growth rates. Residual chronologies show higher mean sensitivity (0.205-0.411) while in general, higher serial correlation was recorded in arstan chronologies. Values of expressed population signals (EPS) were higher than 0.850, which are encouraging for future advanced treering investigation. It is suggested that these chronologies have a high potential for dendrohydrological investigation. However, there is a need for larger sample sizes and further extension of these chronologies into the past.