The use values can be estimated using market mechanisms and can be observed through the activities of households, private enterprises and the government. In the present chapter, we evaluate the importance of the forestry sector by looking at its linkage with other sectors of the economy and investigate the value which it adds using input-output analysis and social accounting matrices. The input-output model is based on an analysis of inter-industry transactions and examines how industries use the products of other industries as inputs for their own products. One of the main advantages of the input-output model is that its analysis of inter-industry transactions can be used to estimate the economic impacts of any changes to the economy.