Optimal Economic Growth With Exhaustible Resources

Originally published in 1979. For decades conservationists have argued that increasing population will eventually out-strip the limited natural resources of the earth. Economists have responded by saying that any resource scarcity will be forestalled by changes in tastes and technology, induced by the appropriate price signals. This study is an attempt to develop a theoretical framework for analysing some of the issues related to this debate. Using an optimal growth theory framework, the author analyses the problem of optimally allocating a finite stock of the resource over time. In the process the author points out the crucial parameters and value judgments relevant to the various issues. This title will be of interest to students of environmental economics.

A book on the economics of exhaustible resources requires no justification. A long book does. The purist will find disquieting our two-asset, constant population model with which we analyse growth possibilities in an economy with exhaustible resources.

The book is about the well-known problem that a perfectly competitive economy, even if endowed with perfect foresight, can grow in an efficient manner. The causes of this strange inefficiency are analyzed, and sufficientconditions for efficient economic growth are discussed. The most important contribution is the elaboration of a rather well-known, yet unproved, hypothesis which says that the existence of a nonproducible productive asset, like land, prevents dynamic inefficiency. This is shown to hold outside steady state growth paths. Applications of the theoretical concepts and results are straightforward and are discussed in detail. The applications include the efficient use of exhaustible resources over time, the possibility of "bubbles" in financial markets, the theory of interest rates, and questions concerning optimal social security.

This book studies optimal economic growth in a closed economy which experiences non-stable population growth. The economy is described by means of a neoclassical growth model which distinguishes overlapping generations within the population. The basic neoclassical growth model is extended to include various types of technical change, as well as investment in human capital or education. The research described in this book connects the analytical tools of traditional growth theory with the actual demographic experience of most industrialized countries. The role of demographic processes in the growth theoretical literature is discussed in the next section. The discussion will show that growth theory needs to extend its scope through the construction of growth models which explicitly recognize demographic forces as a potential source of non-stationarities. This book constitutes a first attempt at such a demographic extension. 1.1 Growth theory and demographic change The theory of economic growth (e.g. Solow, 1970; Burmeister & Dobell, 1970; Wan, 1971) attempts to describe and to explain the long-run development of an economic system (or, in short, economy). An economic system is essentially dynamic in nature. Among the most important sources of dynamics in economics are the following: accumulation of capital (investment); technical change; population growth. Some of these dynamic forces are, at least in part, endogenous to the economic system (i.e. determined by economic variables).