Environmental impact analysis 50 Environmental impact 43 Tourism and Travel 22 Economic impact 20 Leisure, Recreation and Tourism Economics, (New March 2000) 19 Natural Resource Economics, (New March 2000) 19 Sustainability 15 Policy and Planning 14 Tourism 13 Case studies 12 Pollution 12 Pollution and Degradation 12 Social Psychology and Social Anthropology, (New March 2000) 12 Agricultural Economics 11 Management 11 Social impact 11 Environmental policy 10 Tourism impact 10 ENVIRONMENTAL IMPACT 9 Natural resources 9 Agriculture 8 Land Resources 8 Pesticides 8 Ecotourism 7 Environmental impact assessment 7 Planning 7 Plants 7 Tourism development 7 Biodiversity 6 Tourist industry 6