Even more striking are the changes in the understory species.
更惊人的是林下植物品种的变化。
The gray solid points, the gray hollow points, and the black points indicate the canopy, subcanopy, and understory species, respectively.
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。
Wild sarsaparilla, wild oats, Solomon's seal and a host of understory plants die off; grass-like species such as Pennsylvania sedge take over.
野生撒尔沙、野生燕麦、玉竹和大量的林下叶层植物相继死光；宾夕法尼亚莎草之类的草类物种接管了领地。
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