Succession to a climax can be held at any stage by human intervention, such as grazing on chalk downland.
人为的干扰可以阻止演替的进行，例如过渡的放牧。
Succession to a climax can be held at any stage by human intervention, such as grazing on chalk downland.
人为的干扰可以阻止演替的进行，例如过渡的放牧。
声明：以上例
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