References

AREP, 2008. Understanding soil nitrogen dynamics. On Farm Network. http://www.isafarmnet.com.

Akpabio, I.A., E.A. Eniang and E.C. Egwali, 2008. Socio-economic potentials and environmental implications of coastal tourism at Adiabo, Cross River State, Nigeria. J. Environ. Dev. Sustainability, 10: 249-265.
CrossRef  |  

Appeal, M., 2008. South Africa: Slowing global economy impacts on tourism industry. Cultural Africa, South Africa.

Awaritefe, O.D., 2004. Motivation and other consideration in tourist destination choice: A case study of Nigeria. Tourism Geographies Int. J. Tourism Space, Place Environ., 6: 303-330.
CrossRef  |  Direct Link  |  

Aweto, A.O. and G.W. Ogurie, 1992. Impact of intensive market gardening on the nutrient status of hydromorphic soil in the Ojo area of Lagos metropolis, Nigeria. Environmentalist, 12: 223-230.
CrossRef  |  Direct Link  |  

Aweto, A.O. and O. Dikinya, 2003. The beneficial effects of two tree species on soil properties in a semi-arid Savanna Rangeland in Botswana. Land Contam. Reclam., 11: 339-344.
Direct Link  |  

Ayeni, O.O. and G. Okwuemesi, 2002. Developing a GIS database for tourism in Nigeria. Proceedings of the 4th International Conference, July 2-6, African Association of Remote Sensing of the Environment.

Bankole, A.S. and G.O. Odularu, 2006. Achieving the millennium development goals: Issues and options for the Nigeria's tourism industry. Tourism Rev., 61: 26-30.
Direct Link  |  

Bouyoucos, G.J., 1962. Hydrometer method improved for making particle size analyses of soils. Agron. J., 54: 464-465.
CrossRef  |  Direct Link  |  

Bray, R.H. and L.T. Kurtz, 1945. Determination of total, organic and available forms of phosphorus in soils. Soil Sci., 59: 39-46.
CrossRef  |  Direct Link  |  

Bremner, J.M. and C.S. Mulvaney, 1982. Total Nitrogen. In: Methods of Soil Analysis: Chemical and Microbiological Properties, Page, A.L., R.H. Miller and D.R. Keeney (Eds.). American Social Agronomy, Madison, WI., USA., pp: 595-624.

Brown, D.O., 1998. Debt-funded environmental swaps in Africa: Vehicles for Tourism Development. J. Sustainable Tourism, 6: 69-79.
CrossRef  |  Direct Link  |  

Chidumayo, E.N. and L. Kwibisa, 2003. Effects of deforestation on grass biomass and soil nutrient status in Miombo Woodland, Zambia. Agric. Ecosyst. Environ., 96: 97-105.
CrossRef  |  Direct Link  |  

Chokor, B., 1993. Perspectives on Environment and Tourism in Nigeria In: Environment and Tourism in Nigeria, Chokor, B. (Ed.). Environment and Behaviour Association of Nigeria, Nigeria, pp: 341.

Davis, T. and S. Cahill, 2000. Environmental Implications of the Tourism Industry. Resources for the Future, Washington, DC., USA., pp: 40.

Esu, B.B. and E.J. Etuk, 2007. Tourism as a development strategy in cross River State, Nigeria. J. Manage. Enterprise Develop., 4: 235-264.

Esu, B.B., 2008. Perception, preference and attitudes of residents toward tourism development: A case of Cross River State, Nigeria. Int. Bus. Manage., 2: 42-48.
Direct Link  |  

Eze, B.B., 2008. Maximizing the economic potential of the Calabar cultural carnival. Department of Geography and Regional Planning, University of Calabar, Calabar.

Foth, H.D., 2006. Fundamentals of Soil Science. 8th Edn., John Wiley and Sons, New York, USA.

Gratner, W.C., 1996. Tourism Development: Principles, Processes and Policies. Van Nostrand Reihold Co., New York., USA., pp: 539.

Ige, C.S. and G.O. Odularu, 2008. Analysis of the impact of tourism on the West African Economy: A panel data approach. Int. Multidisciplinary J. Tourism, 3: 71-90.
Direct Link  |  

Iwara, A.I., 2009. Impact of road construction on soil and vegetation resources in Tinapa area, cross River State. M.Sc. Thesis, Department of Geography, University of Ibadan, Nigeria.

Jones, T., 2003. Coastal zones in Sub-Saharan Africa. The Natural History Museum and Royal Society, London, UK.

Kozyr, E., 2000. The negative effects of tourism on the ecology of Jamaica. http://www.oppapers.com/essays/Negative-Effects-Tourism/77562.

Kreag, G., 2001. The impacts of tourism. Minnestoa Sea Grant. http://www.seagrant.umn.edu/tourism/pdfs/ImpactsTourism.pdf.

Lee, J., 1988. Tourism and Department in the Third World. Routledge, London, UK.

Lu, D., E. Moran and P. Mausel, 2002. Linking Amazonian secondary succession forest growth to soil properties. Land Degradation Dev., 13: 331-343.
CrossRef  |  Direct Link  |  

Miller, C.E., 1965. Soil Reaction and Liming Soil Fertility. John Wiley and Sons Inc., New York, USA., pp: 436.

Njoku, P.C., 2003. Government policies and their effects on tourism development in Nigeria. Department of Special Project and Services, National Universities Commission, Abuja, Nigeria.

Ojo, G.J.A., 1978. Recreation and Tourism in Nigeria: Pattern Trends. In: Geography of Nigerian Development, Sada, P.O. and J.S. Oguntoyinbo (Eds.). Heinemann Educational Books Ltd., Ibadan, pp: 41-56.

Paudel, S. and J.P. Sah, 2003. Physico-chemical characteristics of soil in tropical sal (Shorea Robusta Gaertn) forest in Eastern Nepal. Himalayan J. Sci., 1: 107-110.

Pickett, S.T.A. and P.S. White, 1985. The Ecology of Natural Disturbance and Patch Dynamics. Orlando: Academic Press, Florida, USA., pp: 472.

Sigdel, E.R., 1994. Physico-chemical properties of soils in Royal Chitwan National Park. Ph.D. Thesis, Central Dept. of Botany, Tribhuvan University, Kathandu.

Suoheimo, J., 1995. Natural regeneration potential of mixed sal (S. Roobusta) forest in Nepal. FMUDP Working Paper.

UNEP, 1998. Small Island environmental management. Unsystem-Wide Earth Watch Coordination, Geneva.

Umoh, U.T. and E.E. Etim, 2008. Coastal environmental for recreation and tourism: Problems and prospects. Proceedings of the Conference on Water Resource Management, Sept. 8-10, Gaborone, Botswana, pp: 1-248.

Walkley, A. and I.A. Black, 1934. An examination of the Detjareff method for determining soil organic matter and a proposed modification to the chromic acid titration method. Soil Sci., 37: 29-38.

Williams, P.W., 1992. A local framework for ecotourism development. Western Wildland, 18: 14-19.
Direct Link  |  

Zedan, H., 2004. Tourism development and biological diversity. Paper Presented at the International Dialogue on Tourism, Cultural Diversity and Sustainable Development. Baccelona, Spain.