灰色实心点代表林冠层树种， 灰色空心点代表亚林层树种， 黑色点代表林下层树种。
The gray solid points, the gray hollow points, and the black points indicate the canopy, subcanopy, and understory species, respectively.
它们早早在森林的新区域中顶上阳伞，让下层进驻速度较慢、密度较低的树种可以长得更为从容些。
They help form the pioneer parasols for new patches of forest, and in their understory slower, denser trees can grow at a more leisurely pace.
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