Planktic foraminifera abundance of Hole 21-206@en
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Relative abundance: D = dominant, A = abundant, C = common, F = few, R = rare, T = trace, P = present (numerical values are abundance in percent)
相对丰度(Relative abundance)分级规则如下:D代表优势种(dominant),A代表丰富种(abundant),C代表常见种(common),F代表少有种(few),R代表稀有种(rare),T代表痕量种(trace),P代表存在种(present);若采用数值表征丰度,则其单位为百分比。
创建时间:
2026-04-20



