Average boundary length and patch shape index have a multiple impact which can make the patch area and boundary number a very good linear relation during the expanding and contracting process.

斑块面积增减过程中形状特征和平均边界长度的复合变化影响导致大型城镇和农业斑块面积和边界数量之间呈简单的线性关系。

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The shape index tends to increase with growth of the patch area.

核心区内的斑块形状指数随着斑块面积的增加有逐渐增大的趋势。

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The edge density, shape index and fractal dimension index is high, the patch shape is complicated, which shows that the material and the energy exchange can be carried on preferably.

边缘密度、形状指数和分维数比较大，形状复杂，可以和较多的异质性斑块相连接，能较好地进行物质和能量的交换。

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