Both fractal dimension of patch boundary and patchiness exponent of Aeluropus littoralis were the highest,and that of Aneurolepidium chinense were lower.

• 獐茅斑块的边界分维数和斑块化指数最高，羊草斑块的较低，碱蓬斑块的斑块化指数略小于羊草斑块，边界分维数大于羊草斑块。