Modeling the Environment was the first textbook in an emerging field'the modeling techniques that allow managers and researchers to see in advance the consequences of actions and policies in environmental management. This new edition brings the book thoroughly up to date and reaffirms its status as the leading introductory text on the subject.
System dynamics is one of the most widely known and widely used methods of modeling. The fundamental principles of this approach are demonstrated here with a wide range of examples, including geo-hydrology, population biology, epidemiology and economics. The applications demonstrate the transferability of the systems approach across disciplines, across spatial scales, and across time scales. All of the models are implemented with stock and flow software programs such as Stella and Vensim. These programs are easy and fun to learn, and they allow students to develop realistic models within the first few weeks of a college course.
System dynamics has emerged as the most common approach in collaborative projects to address environmental problems. The stock and flow structures and the emphasis on feedback control provide a common language that is understood by scientists from many disciplines. Although the interdisciplinary approach described here is widely used in practice, there are few books to aid instruction. Modeling the Environment meets the urgent need for instructional materials in interdisciplinary modeling of environmental systems.
PART I. Introductory Modeling Chapter 1. Introduction Chapter 2. Software: Getting Started with Stella and Vensim Chapter 3. Stocks and Flows: The Building Blocks of System Dynamics Models Chapter 4. Accumulating the Flows Chapter 5. Water Flows in the Mono Basin Chapter 6. Equilibrium Diagrams Chapter 7. S-Shaped Growth Chapter 8. Epidemic Dynamics Chapter 9. Information Feedback and Causal Loop Diagrams Chapter 10. Homeostasis Chapter 11. Temperature Control on Daisyworld
PART II. Intermediate Modeling Chapter 13. The Modeling Process Chapter 14. Software: Further Progress with Stella and Vensim Chapter 15. The Salmon of the Pacific Northwest Chapter 16. Managing a Feebate Program for Cleaner Vehicles Chapter 17. Modeling Pitfalls Chapter 18. Introduction to Cyclical Behavior Chapter 19. Cycles in Real Estate Construction Chapter 20. Cycles in Predator and Prey Population Chapter 21. The Overshoot of the Kaibab Deer Population Chapter 22. DDT in the Ocean Chapter 23. CO2 in the Atmosphere Chapter 24. Concluding Perspective
Appendices Review and Advanced Methods Appendix A Review of Units Appendix B Review of Exponential Growth Appendix C Software Choices and Individual-Based Models Appendix D Sensitivity Analysis and Uncertainty Appendix E. Incorporating Other Methods in a System Dynamics Model Appendix F. Short-Run and Long-Run Dynamics in a Single Model Appendix G. Spatial Dynamics and Spatial Displays
