Wildland Fire Research

Although ecosystems, humans, and fire have coexisted for millennia, changes in geology, ecology, hydrology, and climate as well as sociocultural, regulatory, and economic factors have converged to make wildland fire management exceptionally challenging for U.S. federal, state, and local authorities. Given the mounting, unsustainable costs and difficulty translating existing wildland fire science into policy, the National Academies of Sciences, Engineering, and Medicine organized a 1-day workshop to focus on how a century of wildland fire research can contribute to improving wildland fire management. This publication summarizes the presentations and discussions from the workshop.

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.

Wildland fire is an integral part of ecosystem mgmt. and is essential in maintaining functional ecosystems, but air pollutants emitted from those fires can be harmful to human health and welfare. This review of what is known about the effects of fire on air quality will assist those in the fire and air quality mgmt. communities. Contents: (1) Intro.; Scope; Framework; Prior Work; Changes in Fire Policy; (2) Air Quality Regulations and Fire; (3) Overview of Air Pollution from Fire; (4) Characterization of Emissions from Fires; (5) Transport, Dispersion, and Modeling of Fire Emissions; (6) Atmospheric and Plume Chemistry; (7) Estimating the Air Quality Impacts of Fire; (8) Consequences of Fire on Air Quality; (9) Recommend. for Future Research. Illus.

The need for protection from uncontrolled fire in California was identified by Abbott Kinney, Chairman of the State Board of Forestry, more than 75 years before the construc-tion of the Riverside Forest Fire Laboratory. With the organization of the USDA Forest Service the need for an effective fire protection organization became apparent. In response, a somewhat fragmented research program got under way in the 19 10's. Although the research was successful in reducing fire damage undermost conditions, severe fire years still made it clear that a strong cohesive fire research effort, headquartered at an adequate laboratory was necessary. However, the Fire Laboratory did not "just happen." It was the result of considerable organized public and private support. During the 50 years prior to the dedication of the Laboratory, and the 25 years since, there has been an effort to balance a pragmatic approach toward dealing directly with the fire manager, and also maintaining scientific excellence. There are currently six research projects at the Laboratory with emphases on fire management and the beneficial use of fire, forest recreation, effects of air pollution on forest ecosystem, and watershed management

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.

Years of drought and decades of aggressive fire exclusion have left North American forests at high risk for future catastrophic fires. Forest settings are a magnet for recreational opportunities and for rapidly growing residential developmentputting an increasing number of citizens and their property into the path of wildfires. Recordsetting wildfires initiated the twentyfirst century and motivated the rise to prominence of wildfire on the political agenda, prompting important and farreaching new public policy initiatives. To be effective, these policies must be informed by sciencebut that requires more than just improved knowledge about the physical and biological dynamics of fire and forest ecosystems. Social values, socioeconomic factors, demographic trends, institutional arrangements, and human behavior must also be taken into consideration by the agencies and individuals responsible for wildland fire decision making. The first book to integrate the social science literature on the human dimensions of wildfire, People, Fire, and Forests reviews current studies from this broad, interdisciplinary field and synthesizes them into a rich body of knowledge with practical management implications. Chapters in the book highlight principal findings and common threads in the existing research and identify strengths and gaps. They cover such topics as public perception of wildfire risk, acceptability of fire management policies, and community impacts of wildfire. Designed to make relevant social science information more available and useful to wildfire risk managers and policy makers, People, Fire, and Forests is also intended to encourage and guide further research into wildfire. By exploringthe theoretical and methodological issues surrounding human interactions with wildfire and describing the practical implications of this research, this volume provides an essential resource for students, scholars, and professionals.