This is an updated version posted 12/12/12. In the previous version attribute labels in Table 5 were incorrect for tribs and jobs.

The intensity of agricultural production affects both nutrient and greenhouse gas emissions. Environmental policy designed to reduce one type of pollution may have complementary effects on the other type. This paper explores this issue in the Lake Rotorua catchment in New Zealand using an...

Selection logging in the tropics is increasingly moving to systems that reduce the impact of harvesting operations on forests and soils. While much of the focus has been on modifying the tractor logging system using RIL principles, alternative harvesting systems have also been introduced. One of...

The paper discusses the way pastoral and forestry systems are defined in econometric land use modelling on a national level. It briefly reviews the relevant data bases and modelling tools. Above all, it reflects on the questions asked and information needed in the work of the Ministry of...