Value of the stream order, hydric soil and land usecover indicates different levels of contribution to
the restoration, while the unit of overland flow length is meter, and SI just has no units and PDA equals to
percentage. The criteria dimension is not uniform and it’s not comparable for the suitability analysis, thus
the value should be normalized to range from 0 to 1, thereby slashing errors from different criteria
dimension. Value 0 indicates the lowest suitability, while 1 means the highest level