That is almost defined by the people using the word. It should mean that tourism is limited in size and what tourists can do, in order to protect the habitat they are visiting. However, people can use the term to make people think they are being ecologically smart, when it is only a marketing ploy.
Pure ecologically sustainable tourism is the maximum number of toursits one can let into a habitat without any ecological damage. From a business standpoint, it is the number of tourists one can allow into a habitat with sustainable repairable damage so that the habitat can be visited by future tourists. The first definition is more green-friendly whereas the second is dollar-friendy.
definition of cruise tourism
definition of hospiality and tourism management?
planning the tourism
wintersport-tourism
Components of tourism
for tourism and ecological reasons
There is no one single definition of tourism system. One definition is the travel of people outside of their home location.
dark tourism
definition of tourisem in pakistan
Tourism involving travel to areas of natural or ecological interest.
Tourism: The business of providing services to tourists.
Industry involved with growth of tourism.