Thus,they are not recommendable in application.SI1 values are big for forest types,and they are small for shrubland types.SI1 becomes smaller and smaller as the patch becomes bigger and bigger.

• 相对来说，各森林类型的SI1都比较大，而各灌丛类型的SI1都比较小，说明前者斑块的单位面积中的边界数量多，后者斑块的单位面积中的边界数量少；