图1冠林窗及扩展林窗分布。图中阴影部分代表冠林窗，黑色实线为扩展林窗，虚线为调查样线，灰色实线为等高线。

Fig. 1 Distribution of canopy gaps and expanded gaps. Gray shapes, black lines, dashed lines and gray lines represented canopy gaps, expanded gaps, sample transect lines, and contours, respectively.

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图中阴影部分代表冠林窗，黑色实线为扩展林窗，虚线为调查样线，灰色实线为等高线。

Gray shapes, black lines, dashed lines and gray lines represented canopy gaps, expanded gaps, sample transect lines, and contours, respectively.

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