Pollen-derived vegetation reconstruction at IODP Site 353-U1446, Bay of Bengal

This data set presents the composition of vegetation in the Mahanadi Basin during the Last Glacial Period (80-20 ka). Percentages of the tropical trees, the arid-taxa, Artemisia, Poaceae and Cyperaceae recorded at IODP Site U1446 (19°5'N, 85°4'E, 1430 m water depth) are shown, as well the Diversity Simpson's index based on pollen record and the Axis 1 sample scores of the Principal Component Analysis, which is used in this study as humidity index (Figures 2 and 3 of the related study). This data set also contained the confidence intervals shown in Figure S10 and the row pollen data. We also included labels, depth (in m CCSF-A) and estimated age (Ka) of the studied samples.

本数据集展示了末次冰期（Last Glacial Period，80~20 ka）玛哈纳迪盆地的植被组成。本次研究基于国际大洋发现计划（IODP）U1446站位（北纬19°5′、东经85°4′，水深1430米）的孢粉记录，列出了热带乔木、干旱类群、蒿属（Artemisia）、禾本科（Poaceae）以及莎草科（Cyperaceae）的相对占比；同时还包含基于孢粉记录计算得到的辛普森多样性指数（Simpson's Diversity Index），以及本研究中作为湿度指标的主成分分析（Principal Component Analysis）第一轴样本得分（对应相关研究的图2与图3）。本数据集还涵盖了图S10所示的置信区间与原始孢粉数据，同时提供了研究样品的标签、深度（单位：m CCSF-A）以及估算年龄（单位：Ka）。