This series on Environmental Tourism is published in three parts. Part 1 deals with the main impact areas of Environmental Tourism.
Environmental Tourism, – also referred to as Ecotourism, Sustainable Tourism and Responsible Tourism – are terms rooted in the concept of development that “meets the needs of the present without compromising the ability of future generations to meet their own needs” (Bruntland Commission, 1987).
[For further information on Ecotourism, read more under the Niche Tourism section HERE].
The quality of the environment, both natural and man-made, is essential to tourism. However, tourism’s relationship with the environment is complex. It involves many activities that can have adverse environmental effects. Many of these impacts are linked with the construction of general infrastructures such as roads and airports, and of tourism facilities, including resorts, hotels, restaurants, shops, golf courses and marinas.
The negative impacts of tourism development can gradually destroy the environmental resources on which it depends.
On the other hand, tourism has the potential to create beneficial effects on the environment by contributing to environmental protection and conservation. It is a way to raise awareness of environmental values and it can serve as a tool to finance protection of natural areas and increase their economic importance.
Tourism’s Three Main Impact Areas
Negative impacts from tourism occur when the level of visitor use is greater than the environment’s ability to cope with this use within the acceptable limits of change. Uncontrolled conventional tourism poses potential threats to many natural areas around the world. It can put enormous pressure on an area and lead to impacts such as soil erosion, increased pollution, discharges into the sea, natural habitat loss, increased pressure on endangered species and heightened vulnerability to forest fires. It often puts a strain on water resources, and it can force local populations to compete for the use of critical resources.
1. Depletion of Natural Resources
Tourism development can put pressure on natural resources when it increases consumption in areas where resources are already scarce.
1a) Water resources
Water, and especially fresh water, is one of the most critical natural resources. The tourism industry generally overuses water resources for hotels, swimming pools, golf courses and personal use of water by tourists. This can result in water shortages and degradation of water supplies, as well as generating a greater volume of waste water.
In drier regions like the Mediterranean, the issue of water scarcity is of particular concern. Because of the hot climate and the tendency of tourists to consume more water when on holiday than they do at home, the amount used can run up to 440 liters a day. This is almost double what the inhabitants of an average Spanish city use.
Golf course maintenance can also deplete freshwater resources. In recent years golf tourism has increased in popularity and the number of golf courses has grown rapidly. Golf courses require an enormous amount of water every day and, as with other causes of excessive extraction of water, this can result in water scarcity. If the water comes from wells, overpumping can cause saline intrusion into groundwater. Golf resorts are more and more often situated in or near protected areas or areas where resources are limited, exacerbating their impacts.
1b) Local resources
Tourism can create great pressure on local resources like energy, food, and other raw materials that may already be in short supply. Greater extraction and transport of these resources exacerbates the physical impacts associated with their exploitation. Because of the seasonal character of the industry, many destinations have ten times more inhabitants in the high season than in the low season. A high demand is placed upon these resources to meet the high expectations tourists often have (proper heating, hot water, etc).
1c) Land degradation
Important land resources include minerals, fossil fuels, fertile soil, forests, wetland and wildlife. Increased construction of tourism and recreational facilities has increased the pressure on these resources and on scenic landscapes. Direct impact on natural resources, both renewable and nonrenewable, in the provision of tourist facilities can be caused by the use of land for accommodation and other infrastructure provision, and the use of building materials.
Tourism can cause the same forms of pollution as any other industry: air emissions, noise, solid waste and littering, releases of sewage, oil and chemicals, even architectural/visual pollution.
2a) Air pollution and noise
Transport by air, road, and rail is continuously increasing in response to the rising number of tourists and their greater mobility. To give an indication, the International Civil Aviation Organisation (ICAO) reported that the number of international air passengers worldwide rose from 88 million in 1972 to 344 million in 1994. One consequence of this increase in air transport is that tourism now accounts for more than 60% of air travel and is therefore responsible for an important share of air emissions. One study estimated that a single transatlantic return flight emits almost half the CO2 emissions produced by all other sources (lighting, heating, car use, etc.) consumed by an average person yearly. (Mayer Hillman, Town & Country Planning magazine, September 1996.
Transport emissions and emissions from energy production and use are linked to acid rain, global warming and photochemical pollution. Air pollution from tourist transportation has impacts on the global level, especially from carbon dioxide (CO2) emissions related to transportation energy use.
And it can contribute to severe local air pollution. Some of these impacts are quite specific to tourist activities. For example, especially in very hot or cold countries, tour buses often leave their motors running for hours while the tourists go out for an excursion because they want to return to a comfortable air-conditioned bus.
Noise pollution from aeroplanes, cars, and buses, as well as recreational vehicles such as snowmobiles and jet skis, is an ever-growing problem of modern life. In addition to causing annoyance, stress, and even hearing loss for it humans, it causes distress to wildlife, especially in sensitive areas. For instance, noise generated by snowmobiles can cause animals to alter their natural activity patterns.
2b) Solid waste and littering
In areas with high concentrations of tourist activities and appealing natural attractions, waste disposal is a serious problem and improper disposal can be a major despoiler of the natural environment – rivers, scenic areas, and roadsides. For example, cruise ships in the Caribbean are estimated to produce more than 70,000 tons of waste each year. Today some cruise lines are actively working to reduce waste-related impacts (Refer: Cruise Lines International Association). Solid waste and littering can degrade the physical appearance of the water and shoreline and cause the death of marine animals.
In mountain areas, trekking tourists generate a great deal of waste. Tourists on expedition leave behind their garbage, oxygen cylinders and even camping equipment. Such practices degrade the environment with all the detritus typical of the developed world, in remote areas that have few garbage collection or disposal facilities. Some trails frequently visited by tourists have been nicknamed “Coca-Cola trail” and “Toilet paper trail”.
Construction of hotels, recreation and other facilities often leads to increased sewage pollution. Wastewater has polluted seas and lakes surrounding tourist attractions, damaging the flora and fauna. Sewage runoff causes serious damage to coral reefs because it stimulates the growth of algae, which cover the filter-feeding corals, hindering their ability to survive. Changes in salinity and siltation can have wide-ranging impacts on coastal environments. And sewage pollution can threaten the health of humans and animals.
2d) Aesthetic Pollution
Often tourism fails to integrate its structures with the natural features and indigenous architectural of the destination. Large, dominating resorts of disparate design can look out of place in any natural environment and may clash with the indigenous structural design.
A lack of land-use planning and building regulations in many destinations has facilitated sprawling developments along coastlines, valleys and scenic routes. The sprawl includes tourism facilities themselves and supporting infrastructures such as roads, employee housing, parking, service areas, and waste disposal.
3. Physical Impacts
Attractive landscape sites, such as sandy beaches, lakes, riversides, and mountain tops and slopes, are often transitional zones, characterized by species-rich ecosystems. Typical physical impacts include the degradation of such ecosystems.
An ecosystem is a geographic area including all the living organisms (people, plants, animals, and microorganisms), their physical surroundings (such as soil, water, and air), and the natural cycles that sustain them. The ecosystems most threatened with degradation are ecologically fragile areas such as alpine regions, rainforests, wetlands, mangroves, coral reefs and seagrass beds. The threats to, and pressures on, these ecosystems are often severe because such places are very attractive to both tourists and developers.
Physical impacts are caused not only by tourism-related land clearing and construction but by continuing tourist activities and long-term changes in local economies and ecologies.
3a) Physical impacts of tourism development
3ai) Construction activities and infrastructure development. The development of tourism facilities such as accommodation, water supplies, restaurants and recreation facilities can involve sand mining, beach and sand dune erosion, soil erosion and extensive paving. In addition, road and airport construction can lead to land degradation and loss of wildlife habitats and deterioration of scenery.
3aii) Deforestation and intensified or unsustainable use of land. Construction of ski resort accommodation and facilities frequently requires clearing forested land. Coastal wetlands are often drained and filled due to lack of more suitable sites for construction of tourism facilities and infrastructure. These activities can cause severe disturbance and erosion of the local ecosystem, even destruction in the long term.
3aiii) Marina development. Development of marinas and breakwaters can cause changes in currents and coastlines. Furthermore, extraction of building materials such as sand affects coral reefs, mangroves, and hinterland forests, leading to erosion and destruction of habitats. In the Philippines and the Maldives, dynamiting and mining of coral for resort building materials have damaged fragile coral reefs and depleted the fisheries that sustain local people and attract tourists.
Overbuilding and extensive paving of shorelines can result in the destruction of habitats and disruption of land-sea connections Coral reefs are especially fragile marine ecosystems and are suffering worldwide from reef-based tourism developments. Evidence suggests a variety of impacts to coral result from shoreline development, increased sediments in the water, trampling by tourists and divers, ship groundings, pollution from sewage, overfishing, and fishing with poisons and explosives that destroy coral habitat.
3b) Physical impacts from tourist activities
3bi) Trampling: Tourists using the same trail over and over again trample the vegetation and soil, eventually causing damage that can lead to loss of biodiversity and other impacts. Such damage can be even more extensive when visitors frequently stray off established trails.
3bii) Anchoring and other marine activities. In marine areas (around coastal waters, reefs, beach and shoreline, offshore waters, uplands and lagoons) many tourist activities occur in or around fragile ecosystems. Anchoring, snorkelling, sports fishing and scuba diving, yachting, and cruising are some of the activities that can cause direct degradation of marine ecosystems such as coral reefs and subsequent impacts on coastal protection and fisheries.
3biii) Alteration of ecosystems by tourist activities. Habitat can be degraded by tourism leisure activities. For example, wildlife viewing can bring about stress for the animals and alter their natural behaviour when tourists come too close. Safaris and wildlife watching activities have a degrading effect on habitat as they often are accompanied by the noise and commotion created by tourists as they chase wild animals in their trucks and aircraft. This puts high pressure on animal habits and behaviours and tends to bring about behavioural changes. In some cases, as in Kenya, it has led to animals becoming so disturbed that at times they neglect their young or fail to mate.
Published with acknowledgement to the United Nations Environment Programme www.unep.org
About the United Nations Environment Programme (UNEP) Tourism and Environment Programme. Aware of and concerned about the negative environmental and social impacts of tourism, as well as the opportunities it offers, Ministers of the Environment have decided to give due consideration to this major issue with the aim of creating the adequate policy context to make the tourism industry sustainable. To that end, UNEP has been appointed by the Commission on Sustainable Development (CSD) as the Interagency Coordinator or lead agency responsible for the implementation of Agenda 21 issues on tourism. Together with the World Tourism Organization, UNEP is the main focal point on sustainable tourism for CSD and the Convention on Biological Diversity.