Analyzing railway sand sources in arid regions with muti-type aeolian landforms using differentiating particle size ranges

This study applies the FingerPro model to elucidate the sand sources impacting the Golmud-Korla Railway (GKR) in northwest China. The findings reveal that fine sediments (< 100 μm) deposited on railway sand fences predominantly originate from LCSS, contributing 83.44% and 76.59% to the < 63 μm and 63-100 μm particle size fractions, respectively. Conversely, Dune was identified as the dominant source of coarser particles (100-500 μm), accounting for an average contribution of 75.40%. The research data includes chemical tracers of Cl, P, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Ga, As, Br, Rb, Sr, Y, Zr, Nb, Ba, La, Ce, Nd, Pb, Si, Al, Fe, Mg, Ca, Na, and K in sample with particle size ranges of 0 < 63 μm, 63-100 μm, 100-250 μm, 250-500 μm, and 0-500 μm. Each data set contains three source areas, namely the Gobi, low-lying coarse sand sheet, and Dune, as well as a deposition area with a mixed sample. The above data is in CSV format and can be directly imported into FingerPro, an R package, for operation. The detailed parameter settings and codes can be found in the main text.

本研究采用FingerPro模型，阐明了影响中国西北格尔木-库尔勒铁路（GKR）的风沙源。研究结果显示，铁路防沙栅栏上沉积的细颗粒沉积物（粒径<100 μm）主要源自低凹粗砂滩（low-lying coarse sand sheet，LCSS），分别占0~63 μm和63~100 μm粒级沉积物的83.44%和76.59%。反之，沙丘（Dune）则是100~500 μm粗颗粒的主要贡献源，平均贡献率达75.40%。本研究数据集包含不同粒级（0~63 μm、63~100 μm、100~250 μm、250~500 μm及0~500 μm）样品的化学示踪数据，涉及元素包括Cl、P、Ti、V、Cr、Mn、Co、Ni、Cu、Zn、Ga、As、Br、Rb、Sr、Y、Zr、Nb、Ba、La、Ce、Nd、Pb、Si、Al、Fe、Mg、Ca、Na与K。各数据集均涵盖三类源区：戈壁、低凹粗砂滩与沙丘，以及带有混合样品的沉积区。上述数据以CSV格式存储，可直接导入R包FingerPro中进行分析运算，详细的参数设置与代码可参见论文正文。