Tropical African rain forests are tropical moist forests of semi-deciduous varieties distributed across nine West African countries -- Benin, Ghana, Guinea Bissau, Guinea, Ivory Coast, Liberia, Nigeria, Sierra Leone and Togo. Population increase results in rain forests being destroyed for the economic benefits of logging and the need for arable land. The increasing demand for fuel, wood and forest products added to these other factors cuts down the amount of existing African trees. This process can be called Rainforest depletion. Rainforest depletion in tropical Africa is based on many socio-economic factors and environmental factors, resulting in landscape changes that threatens biodiversity, water and energy resources, and adds to trace-gas emissions. Institute for Sea Research conducted a temperature record dating back to 25, 000 years ago. Several conservation and development studies conclude that the deforestation in Africa is tied closely to demographic settings such that the utmost loss of rain forests has occurred in countries of higher population growth. Lack of dependable data and survey information in some countries has made the account of areas of unbroken forest and/or under land use change and their relation to economic indicators difficult to ascertain. Hence, the amount and rate of deforestation in Africa are less known than other regions of tropics.The term rainforest deforestation or depletion refers to the complete obstruction of forest canopy cover for means of agriculture, plantations, cattle-ranching, and other non-forest fields. Other forest use changes for example are forest disintegration (changing the spatial continuity and creating a mosaic of forest blocks and other land cover types), and dreadful conditions (selective logging of woody species for profitable purposes that affects the forest canopy and the biodiversity). The general meaning to the term deforestation is linked not only to the value system but the type of measurement designed to assess it. Thus, different interpretations of deforestation cause noticeable changes in the estimate of forests cleared.One reason for forest depletion is to plant cash crops. Many West African countries depend on cash crop exports. Products like gum. copal, rubber, cola nuts, and palm oil provide rather steady income revenue for the West African countries. Land use change spoils entire habitats with the forests. Converting forests into timber is another cause of deforestation. Over decades, the primary forest product was commercial timber. Urbanized countries account for a great percentage of the world's wood consumption, that increased greatly between 1950 and 1980. Simultaneously, preservation measures were reinforced to protect European and American forests.Economic growth and growing environmental protection in industrialized European countries made request for tropical hardwood become strong in West Africa. In the first half of the 1980s, an annual forest loss of 7,200 square kilometers was note down along the Gulf of Guinea, a figure equivalent to 4-5 percent of the total remaining rain forest area. By 1985, 72 percent of West Africa's rainforests had been transformed into fallow lands and an additional 9 percent had been opened up by timber exploitation. Tropical timber became a viable choice to European wood following World War II, as trade with East European countries stop and timber noticeably became sparse in western and southern Europe. Despite efforts to promote lesser known timber species use, the market continued to focus on part of the usable timber obtainable. West Africa was prone to selective harvesting practices; while conservationists blamed the timber industry and the farmers for felling trees, others believe rain forest destruction is connected to the problem of fuel wood. The contribution of fuel wood consumption to tree stock decline in Africa is believed to be significant. It is generally believed that firewood provides 75 per cent of the energy used in sub-Sahara Africa. With the high demand, the consumption of wood for fuel exceeds the renewal of forest cover.The rain forests which remain in West Africa now merely are how they were hardly 30 years ago. In Guinea, Liberia and the Ivory Coast, there is almost no primary forest cover left unscathed; in Ghana the situation is much worse, and nearly all the rain forest are cut down. Guinea-Bissau loses 200 to 350 km² of forest yearly, Senegal 500 km² of wooded savannah, and Nigeria 2,050,000 of both. Liberia exploits 800 km² of forests each year. Extrapolating from present rates of loss, botanist Peter Raven pictures that the majority of the world's moderate and smaller rain forests (such as in Africa,) could be ruined in forty years. Tropical Africa is about 18% of the world total covering 20 million km² of land in West and Central Africa. The region has been facing deforestation in various degrees of intensity throughout the recent decades. The actual rate of deforestation varies from one country to another and accurate data does not exist yet. Recent estimates show that the annual pace of deforestation in the region can vary from 150 km² in Gabon to 2900 km² in Cote d'Ivoire. Remaining tropical forest still cover major areas in Central Africa but are abridged by patches in West Africa.The African Timber Organization member countries (ATO) eventually recognized the cooperation between rural people and their forest environment. Customary law gives residents the right to use trees for firewood, fell trees for construction, and collect of forest products and rights for hunting or fishing and grazing or clearing of forests for maintenance agriculture. Other areas are called "protected forests", which means that uncontrolled clearings and unauthorized logging are forbidden. After World War II, commercial exploitation increased until no West African forestry department was able of making the law. By comparison with rain forests in other places of the world in 1973, Africa showed the greatest infringement though in total volume means, African timber production accounted just one third compared to that of Asia. The difference was due to the variety of trees in Africa forests and the demand for specific wood types in Europe.Forestry regulations in West Africa were first applied by colonial governments, but they were not strict enough to deter forest exploitation. It wasn’t until the 1970s that the inadequate performance of forest regulations was recognized. The Tropical Forestry Action Plan was conceived in 1987 by the World Resources Institute in cooperation with the Food and Agriculture Organization, the United Nations Development Program (UNDP) and the World Bank with hopes of halting tropical forest destruction. In its bid to stress forest conservation and development, the World Bank provided $103 million in building countries, especially in Africa, to help in developing long range forest conservation and management programs meant for ending deforestation.