In an idealised model the costs of capital and maintenance and the resulting flow of income benefits over a period of years enables the analyst to produce computations of present values and internal rates of return that summarise the whole investment process in a micro environment. In...

In New Zealand, the demand for nitrogen fertiliser has increased markedly since the early 1980s. Potentially, this trend has significant environmental and climate change implications. While many factors could contribute to this trend, little work has been done to examine the drivers of increased...

This article explores long-term land improvement (lime application) under land tenure insecurity on leased land. The dynamic optimisation problem is solved by a stochastic dynamic programming routine with known parameters for one-period returns and transition equations. The model parameters...

This paper assesses the distributional and economic impacts resulting from a hypothetical individual quota management system in the Gal�pagos spiny lobster fishery. Using data from the Fisheries Monitoring Programme, an implicit function is derived and evaluated at a total allowable catch to...

The greatest friction in trade and fishery between Japan and New Zealand was the Total Economic Relationship, which was insisted by the PM of NZ. NZ wanted to export dairy foods in exchange for admitting fishing. Both governments experienced a long and tough negotiation. Recently frictions have...

Lakes Taupo and Rotorua are important to New Zealand, but declining lake water quality is increasingly becoming a problem. Primary producers are said to be impacting heavily on the lakes' water quality through discharges that reach them through streams and ground water. The paper discusses the...

There are at least five general reasons why market-based policies fail to address some of the most basic environmental objectives. This study evaluates the available biophysical and economic data against these criteria and concludes that market-based approaches should be employed cautiously in...

China's horticultural exports have almost doubled in value over the past decade, her imports have increased by even more, and China is increasingly a net exporter of horticultural products. After adjusting trade data for irregularities in the reported trade between Hong Kong and mainland China,...

The key resource in efficient production is the management input used to coordinate the land, labour and capital. Yet, our understanding of this resource is still somewhat limited, especially the factors involved in improving the managerial ability of farmers. This paper summarises three tests...