Wildland Fires

The wildfires that spread across Southern California in the fall of 2003 were devastating in their scale-twenty-two deaths, thousands of homes destroyed and many more threatened, hundreds of thousands of acres burned. What had gone wrong? And why, after years of discussion of fire policy, are some of America's most spectacular conflagrations arising now, and often not in a remote wilderness but close to large settlements? That is the opening to a brilliant discussion of the politics of fire by one of the country's most knowledgeable writers on the subject, Stephen J. Pyne. Once a fire fighter himself (for fifteen seasons, on the North Rim of the Grand Canyon) and now a professor at Arizona State University, Pyne gives us for the first time a book-length discussion of fire policy, of how we have come to this pass, and where we might go from here. Tending Fire provides a remarkably broad, sometimes startling context for understanding fire. Pyne traces the "ancient alliance" between fire and humanity, delves into the role of European expansion and the creation of fire-prone public lands, and then explores the effects wrought by changing policies of "letting burn" and suppression. How, the author asks, can we better protect ourselves against the fires we don't want, and better promote those we do? Pyne calls for important reforms in wildfire management and makes a convincing plea for a more imaginative conception of fire, though always grounded in a vivid sense of fire's reality. "Amid the shouting and roar, a central fact remains," he writes. "Fire isn't listening. It doesn't feel our pain. It doesn't care-really, really doesn't care. It understands a language of wind, drought, woods, grass, brush, and terrain, and it will ignore anything stated otherwise." We need to think about fire in more deeply biological ways and recognize ourselves as the fire creatures we are, Pyne argues. Even if, in recent times, "we have gone from being keepers of the flame to custodians of the combustion chamber," tending fire wisely remains our responsibility as a species. "The Earth's fire scene," he writes of us, "is largely the outcome of what this creature has done, and not done, and the species operates not according to strict evolutionary selection but in the realm of culture, which is to say, of choice and confusion." Rich in insight, wide-ranging in its subject, and clear-eyed in its proposals, Tending Fire is for anyone fascinated by fire, fire policy, or human culture.

Even before the myth of Prometheus, fire played a crucial ecological role around the world. Numerous plant communities depend on fire to generate species diversity in both time and space. Without fire such ecosystems would become sterile monocultures. Recent efforts to prohibit fire in fire dependent communities have contributed to more intense and more damaging fires. For these reasons, foresters, ecologists, land managers, geographers, and environmental scientists are interested in the behavior and ecological effects of fires. This book will be the first to focus on the chemistry and physics of fire as it relates to the ways in which fire behaves and the impacts it has on ecosystem function. Leading international contributors have been recruited by the editors to prepare a didactic text/reference that will appeal to both advanced students and practicing professionals.

Wildland fires have an irreplaceable role in sustaining many of our forests, shrublands and grasslands. They can be used as controlled burns or occur as free-burning wildfires, and can sometimes be dangerous and destructive to fauna, human communities and natural resources. Through scientific understanding of their behaviour, we can develop the tools to reliably use and manage fires across landscapes in ways that are compatible with the constraints of modern society while benefiting the ecosystems. The science of wildland fire is incomplete, however. Even the simplest fire behaviours – how fast they spread, how long they burn and how large they get – arise from a dynamical system of physical processes interacting in unexplored ways with heterogeneous biological, ecological and meteorological factors across many scales of time and space. The physics of heat transfer, combustion and ignition, for example, operate in all fires at millimetre and millisecond scales but wildfires can become conflagrations that burn for months and exceed millions of hectares. Wildland Fire Behaviour: Dynamics, Principles and Processes examines what is known and unknown about wildfire behaviours. The authors introduce fire as a dynamical system along with traditional steady-state concepts. They then break down the system into its primary physical components, describe how they depend upon environmental factors, and explore system dynamics by constructing and exercising a nonlinear model. The limits of modelling and knowledge are discussed throughout but emphasised by review of large fire behaviours. Advancing knowledge of fire behaviours will require a multidisciplinary approach and rely on quality measurements from experimental research, as covered in the final chapters.

This book covers the fundamental physics and chemistry of fire, fire behavior, wildland fuels, the interactions of fires and weather, ecological effects of fires, the cultural and institutional framework of fire management, planning efforts for fire management, suppression strategies, prescribed fires, and global fire management. Copyright © Libri GmbH. All rights reserved.

Wildland fires are becoming one of the most critical environmental factors affecting a wide range of ecosystems worldwide. In Mediterranean ecosystems (including also South-Africa, California, parts of Chile and Australia), wildland fires are recurrent phenomena every summer, following the seasonal drought. As a result of changes in traditional land use practices, and the impact of recent climate warming, fires have more negative impacts in the last years, threatening lives, socio-economic and ecological values. The book describes the ecological context of fires in the Mediterranean ecosystems, and provides methods to observe fire danger conditions and fire impacts using Earth Observation and Geographic Information System technologies.

Wildland fires are one of the most devastating and terrifying forces of nature. While their effects are mostly destructive they also help with regeneration of forests and other ecosystems. Low-intensity fires clear accumulating biomass reducing risk of catastrophic crown fires and can be used as an effective management tool. This book presents current understanding of wildland fires and air quality as well as their effects on human health, forests and other ecosystems. in the first section of the book the basics of wildland fires and resulting emissions are presented from the perspective of changing global climate, air quality impairment and effects on environmental and human health and security. in the second section, effects of wildland fires on air quality, visibility and human health in various regions of the Earth are discussed. The third section of the book deals with complex issues of the ecological impacts of fires and air pollution in forests and chaparral in North America. The fourth section discusses various management issues facing land and fire managers which are related to wildfires, use of prescribed fires, and air quality. This section also presents various modeling systems used for describing fire dangers and behavior as well as smoke and air pollution predictions applied in the risk assessment analysis. The book concludes with a series of expert recommendations for wildland fire and atmospheric research.

Dangerous accumulations of brush, small trees, and other vegetation on federal lands, particularly in the western United States, have helped fuel devastating wildfires in recent years. Although a single focal point is critical for directing firefighting efforts by federal, state, and local governments, GAO found a lack of clearly defined leadership at the federal level. Authority and responsibility remain fragmented among the Department of the Interior, the Forest Service, and the states. Implementation of a performance accountability network also remains fragmented. As a result, GAO could not determine if the $796 million earmarked for hazardous fuels reduction in 2001 and 2002 has been targeted to communities and areas at highest risk. The five federal land management agencies--the National Park Service, the Fish and Wildlife Service, the Bureau of Land Management, the Bureau of Indian Affairs, and the Forest Service--have yet to begin the research needed to identify and prioritize vulnerable communities near high-risk federal lands. Moreover, the agencies are not collecting the data needed to determine if changes are needed to expedite the project-planning process. They also are not collecting data needed to measure the effectiveness of efforts to dispose of the large amount of brush and other vegetation on federal lands.