The functions or effects of PAM and VAM are different for different assessment purposes or different spatial scales,but they will promote and complement each other to some extent.

• 对于不同的评价目的和不同的评价空间尺度，这两类评价方法的作用是有较大区别的，同时这两类评价方法在一定意义上又是互相促进和互为补充的.