A matrix growth model suitable for analysis of uneven-aged forest management is developed based on recursive equations represented on matrix form. The equations consist of transition probabilities forming part of application of Markov chain theory, which describe growth between diameter classes,...

Construction of the Itaparica dam and reservoir induced changes in the agricultural production systems of the Itaparica micro-region, at the lower-middle São Francisco river basin. Extensive traditional systems were replaced by e.g. irrigated fruit production. However, over twenty years after...

This paper presents an irrigation farm management tool, SALMOD (Salinity And Leaching Model for Optimal irrigation Development), that calculates the profit maximizing crop enterprise composition and irrigation management options for farm specific soil type, drainage status and irrigation system...

This paper analyzes the effects of using product costs derived from an LP-model for managing the salesmen's efforts at a sawmill company. The salesmen are not controlled by sales quota, as is usual, but assessed by the accounting profit they generate. The analysis is realized by a computer...

Near natural forest management is performed by use of domestic tree species that are able to regenerate naturally. One of the long-term key objectives is to achieve more structural richness in the form of uneven-aged mixed species forests dependent on so-called forest development types that are...

Potential for change in the mix of irrigated enterprises was estimated for a catchment in the Shepparton irrigation region using linear programming. The model allocated resources to maximise net income in each of the next five decades as if the catchment were one farm. Change was driven by price...

Wood products are included as competing enterprises in a model used as an aid in evaluating the need for land and water resource development. The procedure for developing linear programming data inputs for veneer, sawtimber, cordwood, and "other" enterprises is presented. Detailed land use was...

A programming model is used to assess the welfare effects of regional and practice specifications contained in New York State's Draft Conservation Reserve Enhancement Program (CREP) proposal. Net social benefits are nearly 75% lower than options that explicitly account for opportunity costs of...

In German agriculture structural change is mainly a result of the outmigration of smaller farms from the sector. The decisions of these farmers to leave or stay in the sector, are not based solely on financial data and market expectations. Other aspects are important such as the preservation of...

Up to 25 percent of all anthropogenic greenhouse gas emissions are caused by deforestation, and Indonesia is the third largest greenhouse gas emitter worldwide due to land use change and deforestation. On the island of Sulawesi in the vicinity of the Lore Lindu National Park (LLNP), many...