The development of models of processes.
This study combines non market valuation and bio economic modelling in a dynamic model of ecosystem services. First, because non market valuation and bio economic models use different concepts of valuation, the values of ecosystem services are defined. Next, an analytical solution is derived which includes a dynamic Lancaster demand system and new methods for welfare analysis. Finally, both revealed and stated preference methods are proposed for estimating the value of ecosystem (more)...
National Monitoring and Evaluation Framework
This document reports on the Wind Erosion Assessment Model (WEAM) for field-based wind erosion risk assessment. The objective was to assess if WEAM could be used by regional Natural Resource Management (NRM) bodies to assess erosion levels of different land management practices on different (more)...
National Monitoring and Evaluation Framework
This document examines the application of the CEMSYS wind erosion and dust transport model as a means of monitoring the impact of wind erosion at national and regional scale. In its current form CEMSYS takes into consideration the atmospheric conditions (wind speed, rainfall etc.) and land surface (soil type, vegetation cover etc.) and estimates wind erosion quantities such as sand flux and dust flux. Other wind erosion related quantities, such as (more)...
Rangelands are highly complex agro-ecological systems subject to considerable rainfall variability. This spatial and temporal heterogeneity, when combined with a complex socioeconomic environment, means that it is almost impossible to use empirical stu
