Achieving all the above objectives causes changes on
three essential and specific elements of sustainable
development, namely the economy, the natural
environment and society. This view is also supported
by Mensah (2019) who states that "sustainable
development is based on economic sustainability,
environmental sustainability and social
sustainability", but also by Munasinghe (1993) who
stated that sustainable development can be seen from
three points of view, namely economic, social and
ecological. From this point of view, the field of
tourism falls within the scope of sustainable
development, as it involves economic aspects (jobs,
wages, etc), and environmental issues (natural
resources), but also social aspects (strengthening
cultural identity of tourist destinations, poverty
reduction, etc). Bâc (2013) states that the basis of
sustainable society is the principle of equitable
distribution and democratic participation. The
principle of equitable distribution affects resources,
as it refers to their fair distribution. Democratic
participation is a principle that emphasizes the
importance and need for society / people to take part
in the decision-making process.
In accordance with the definitions of tourism and
sustainable development, the notion of sustainable
tourism has appeared in the literature, in the sense that
this notion can be seen as "the application of the
principles of sustainable development in tourism"
(Bâc, 2013). Given that tourism also has negative
effects on society (erosion of local traditions,
congestion, etc) and the environment (pollution,
irresponsible and continuous consumption of local
resources, etc), we can admit that it was imperative to
find solutions. Against the background of the
negative aspects of tourism, the concept of
sustainable tourism appeared. Bâc (2013) admits that
"sustainable tourism is a reactive notion, which aims
to eradicate the negative impact of tourism". This
approach aims at the goal of sustainable tourism. A
holistic approach to defining the concept is provided
by the World Tourism Organization and the United
Nations Environment Program, which have
formulated the following definition: "Sustainable
tourism is the type of tourism that focuses on its
present and future socio-economic situation"(United
Nations Environment Programme and World
Tourism Organization, 2005). The two international
authorities highlighted the fact that sustainable
tourism falls under the umbrella of sustainable
development, through the prism of tourists, industry,
environment and communities that fall into the main
components of sustainable development: economy,
society and environment.
All forms of tourism can enter the sphere of
sustainable tourism (Ioan, Rădulescu, & Cojocea,
2012), but there are also several distinct forms,
including ecotourism, rural tourism, pro-poor-
tourism (Bâc, 2013). In addition to these forms of
tourism, other ones have been studied in the literature,
for example volunturism, which in recent years has
seen an upward trend (Pompurova, Marcekova,
Sebova, Sokolova, & Zofaj, 2018)or cultural tourism,
which Zoran (2018) concludes that "is a form of
tourism that educates people about the history, art and
architecture of a tourist destination." Also, Zargham
(2007) considers that cultural tourism is one of the
most intense forms of sustainable tourism, because
through the interest of tourists for this form of tourism
is stimulated the reconditioning of historical vestiges.
The study of sustainable tourism indicators is not
a new topic in the literature. Given the fact that
sustainable tourism can be approached through the
prism of sustainable development pillars (economic,
social, environmental), its indicators can be
categorized according to these pillars, a special
importance having the environmental pillar. For
example, Lozano-Oyola et al. (2012) includes in the
environmental pillar several indicators of sustainable
tourism, including: ,, percentage of protected areas,
percentage of energy consumption from renewable
sources, amount of waste produced at a destination,
density of buildings, noise level during the day , the
number of tourists in an area etc''.
2.2 Overtourism
From an economic point of view, the numerous
tourist flows have advantages for local entrepreneurs,
at least in terms of revenues. That is the reason why
most local entrepreneurs show a positive attitude
towards tourists and make considerable efforts to
increase their number. At the same time, the large
number of tourists from a tourist destination brings
advantages for the local population, in the sense that
a large number of tourists generates the need for staff,
which leads to new jobs. This is an optimistic
approach to the impact that tourism can have on a
tourist destination, but there is also a pessimistic
approach that can be described in terms of the concept
of overtourism.
According to the World Tourism Organization,
overtourism is "the impact that tourism has on a
tourist destination and that negatively influences the
quality of life of residents and the experiences of
tourists"(World Tourism Organization, 2018). By
comparison, overtourism is the antithesis of
sustainable tourism, as the latter positively influences