如图所示两条虚线之间的部分表示生态系统功能正常的作用范围y表示一个外来干扰使之偏离这一范围的大小x表示恢复到原状态所需的时间曲线与正常 Template




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tomski如图所示两条虚线之间的部分表示生态系统功能正常的作用范围y表示一个外来干扰使之偏离这一范围的大小x表示恢复到原状态所需的时间曲线与正常 coloring