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Conference

2002

Integrated modelling

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Integrated Water Quality Modelling: Ben Chifley Dam Catchment, Australia, Lachlan T. H. Newham, R. A. Letcher, A. J. Jakeman, A. L. Heathwaite, C. J. Smith, D. Large Jul 2002

Integrated Water Quality Modelling: Ben Chifley Dam Catchment, Australia, Lachlan T. H. Newham, R. A. Letcher, A. J. Jakeman, A. L. Heathwaite, C. J. Smith, D. Large

International Congress on Environmental Modelling and Software

This paper describes an integrated hydrologic, stream sediment and nutrient export modelling system. The modelling system is designed to simulate catchment-scale land and water management activities in the Ben Chifley Dam Catchment (BCDC). The dam has experienced problematic blue-green algal blooms over the past decade. The aim of the modelling is to examine management scenarios designed to reduce nutrient and sediment delivery from the BCDC. This paper describes the framework of the system along with brief description of each of the various components. The innovation of the modelling system is the integration of otherwise separate modelling approaches. The output of …


Integrated Modelling And Decision Support Tools: A Mediterranean Example, T. Oxley, N. Winder, Brian Mcintosh, M. Mulligan, Guy Engelen Jul 2002

Integrated Modelling And Decision Support Tools: A Mediterranean Example, T. Oxley, N. Winder, Brian Mcintosh, M. Mulligan, Guy Engelen

International Congress on Environmental Modelling and Software

A great deal of new knowledge and research material has been generated from research carried out under the auspices of the EU. However, only a small amount has been made available as practical policysupport tools. In this paper we describe how EU funded research models and understanding has been integrated into an interactive Decision Support System addressing physical, economic and social aspects of land degradation in the Mediterranean. We summarise the 10 constituent models that simulate hydrology, human influences, crops, natural vegetation and climatic conditions. The models operate on very different spatial and temporal scales and utilise different modelling techniques …


An Integrated Modelling Approach For Assessing Water Policy Rules And Land Use Change Options, Juliet Gilmour, R. A. Letcher Jul 2002

An Integrated Modelling Approach For Assessing Water Policy Rules And Land Use Change Options, Juliet Gilmour, R. A. Letcher

International Congress on Environmental Modelling and Software

The primary aim of the study has been to develop a modelling framework to quantitatively assess the impact of water allocation rules upon economic and biophysical environments (primarily hydrological) at the catchment scale. This paper identifies development of the modelling approach to answer allocation questions by examining hydrological, land and agricultural production systems. The conceptual framework underpinning the modelling approach identifies the major aspects of integration between hydrological and production systems. The production model is integrated at various points within the hydrological cycle including rainfall, streamflow and runoff components. The outcome of the approach allows water to be moved around …


A Systematic Approach To Assess Highland Resource Management Options In Northern Thailand, K. Trisophon, V. Punyawadee Jul 2002

A Systematic Approach To Assess Highland Resource Management Options In Northern Thailand, K. Trisophon, V. Punyawadee

International Congress on Environmental Modelling and Software

Problems that have emerged from the ongoing highland development schemes in northernThailand indicate the need for better understanding of resource management issues in the region. Particularattention has been paid to land and water management. An integrated modelling system has been developedto address this issue based on a multidisciplinary approach. The components of the system include a cropsimulation model, a hydrological model and a set of linear programming models. The modelling systemenables users to simulate farmers’ decision making process concerning farmland and water resourcemanagement. Conditions for farmers’ decisions are adjusted seasonally and annually, by an embeddedfeedback mechanism, according to the simulated …


How Bad Isn't The Agent-Based Model Catchscape?, N. Becu, P. Perez, Olivier Barreteau, A. Walker Jul 2002

How Bad Isn't The Agent-Based Model Catchscape?, N. Becu, P. Perez, Olivier Barreteau, A. Walker

International Congress on Environmental Modelling and Software

Due to mounting human pressure, stakeholders in northern Thailand are facing crucial natural resource management issues. The impact of upstream irrigation management on the downstream agricultural viability is a common source of conflict. It has often both biophysical and social origins. CATCHSCAPE has been developed as an Agent-Based model that enables us to describe the whole catchment: hydrology, farmers’ behaviour and water management rules. It is meant to simulate scenarios based on assumptions about value of these features as well as some assumptions about context, such as levels of prices for various commodities or climate. The biophysical modules are made …