·OR·AR 其中:TDOR表示经营绩效;O表示产出;I表示投入;OR表示经营效率;AR表示"地力"保育 效率。 2. 旅游目的地"地力"

When we change the precondition for the PLC,we can get two useful new PLC theories, one is PLC based on pure tourists, the other is PLC intervened by human. According to those theories and Shifting Agriculture, it is easy to know that Shifting Tourism Destination is quite important in order to keep sustained growth of tourism.The border of the shifting depends on the capability of touri sm destination or tourist bound profit.