Download or read book Photochemical Oxidant Air Pollution Effects on a Mixed Conifer Forest written by R. N. Kickert and published by . This book was released on 1980 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: EPA contract 68-03-2442 provided support for three years of the studies to determine the chronic effects of photochemical oxidant air pollutants on a western mixed conifer forest ecosystem. This report deals with the year 1976-77 and is the final publication on EPA contract 68-03-2442. Computer simulation programs have been written for some of the subsections. Subsystems which received greatest attention during this study were: major tree species response to oxidant dose, tree population dynamics, tree growth, moisture dynamics, soil chemical and physical properties, tree mortality relative to disease, insects and other factors, epidemiology of forest tree pathogens with emphasis on Fomes annosus, cone and seed production, tree seedling establishment, litter production and litter decomposition relative to microfloral decomposer populations.
Download or read book Photochemical Oxidant Air Pollutant Effects on a Mixed Conifer Forest Ecosystem written by and published by . This book was released on 1977 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photochemical Oxidant Air Pollution Effects on a Mixed Conifer Forest written by R. N. Kickert and published by . This book was released on 1980 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: EPA contract 68-03-2442 provided support for three years of the studies to determine the chronic effects of photochemical oxidant air pollutants on a western mixed conifer forest ecosystem. This report deals with the year 1976-77 and is the final publication on EPA contract 68-03-2442. Computer simulation programs have been written for some of the subsections. Subsystems which received greatest attention during this study were: major tree species response to oxidant dose, tree population dynamics, tree growth, moisture dynamics, soil chemical and physical properties, tree mortality relative to disease, insects and other factors, epidemiology of forest tree pathogens with emphasis on Fomes annosus, cone and seed production, tree seedling establishment, litter production and litter decomposition relative to microfloral decomposer populations.
Download or read book Photochemical Oxidant Air Pollutant Effects on a Mixed Conifer Forest Ecosystem written by and published by . This book was released on 1977 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photochemical oxidant air pollution effects on a mixed conifer forest ecosystem written by and published by . This book was released on 1980 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photochemical oxidant air pollution effects on a mixed conifer forest ecosystem written by Oliver C. Taylor and published by . This book was released on 1980 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oxidant Air Pollutant Effects on a Western Coniferous Forest Ecosystem written by Oliver Clifton Taylor and published by . This book was released on 1971 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photochemical Oxidant Air Pollutant Effects on a Mixed Conifer Forest Ecosystem written by R. N. Kickert and published by . This book was released on 1977 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oxidant Air Pollutant Effects on a Western Coniferous Forest Ecosystem written by Oliver Clifton Taylor and published by . This book was released on 1973 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photochemical oxidant air pollution effects on a mixed conifer forest ecosystem written by Paul R. Miller and published by . This book was released on 1977 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photochemical Oxidant Air Pollution Effects on a Mixed Conifer Forest written by U. S. Environmental Protection Agency and published by BiblioGov. This book was released on 2013-07 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Environmental Protection Agency (EPA) was introduced on December 2, 1970 by President Richard Nixon. The agency is charged with protecting human health and the environment, by writing and enforcing regulations based on laws passed by Congress. The EPA's struggle to protect health and the environment is seen through each of its official publications. These publications outline new policies, detail problems with enforcing laws, document the need for new legislation, and describe new tactics to use to solve these issues. This collection of publications ranges from historic documents to reports released in the new millennium, and features works like: Bicycle for a Better Environment, Health Effects of Increasing Sulfur Oxides Emissions Draft, and Women and Environmental Health.
Download or read book Oxidant Air Pollution Impacts in the Montane Forests of Southern California written by Paul R. Miller and published by Springer. This book was released on 1999 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the 1950s, the pines native to the San Bernardino Mountains in Southern California have shown symptoms of decline that have proven to result from exposure to ozone, a major plant-damaging gas in photochemical oxidant air pollution. Because of their proximity to major urban areas, the San Bernardino Mountains have served as a natural laboratory for studying effects of oxidant and acidic air pollution on a mixed-conifer forest. This volume presents a body of research conducted over more than thirty years, including an intensive interdisciplinary five-year study begun in 1991. Chapters include studies of the relationships of biogeography and climate to the region's air pollution, the chemical and physiological mechanisms of ozone injury, as well as the impacts of nitrogen-containing pollutants and natural stresses on polluted forests. The synthesis of such long-term studies provides insights into the combined influences of pollutants on ecosystem function in forested regions with Mediterranean-type climates.
Download or read book Photochemical Oxidant Air Pollution Effects on a Mixed Conifer Forest written by and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oxidant Air Pollutant Effects on a Western Coniferous Forest Ecosystem written by Oliver Clifton Taylor and published by . This book was released on 1973 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oxidant Air Pollution Impact to the Forests of Eastern United States written by John M. Skelly and published by . This book was released on 1979 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Pollution by Photochemical Oxidants written by Robert Guderian and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photochemical oxidants are secondary air pollutants formed under the influence of sunlight by complex photochemical reactions in air which contains nitrogen oxides and reactive hydrocarbons as precursors. The most adverse components formed by photochemical reactions in polluted air are ozone (0 ) 3 and peroxyacetyl nitrate (PAN), among many other products such as aldehydes, ketones, organic and inorganic acids, nitrates, sulfates etc. An analysis and evaluation of the available knowledge has been used to characterize the relationships among emissions, ambient air concentrations, and effects, and to identify the important controlling influences on the formation and effects of photochemical oxidants. The biological activity of photochemical oxidants was first clearly manifested during the early 1940's, when vegetation injury was observed in the Los Angeles Basin in the United States. Since that time, as a consequence of the increasing emissions of photochemical oxidant precursors, the photochemical oxidants have become the most important air pollutants in North America. In other parts of the world, for example South and Central America, Asia, and Australia, photo chemical oxidants threaten vegetation, particularly the economic and ecological performance of plant life. According to my knowledge, the first observations of ozone and PAN injury to vegetation in Europe were made by Dr. Ellis F. Darley (Statewide Air Pollution Research Center, University of California, Riverside, California) during a study visit (1963/64) to the Federal Republic of Germany.
Download or read book Oxidant Air Pollutant Effects on a Western Coniferous Forest Ecosystem written by and published by . This book was released on 1974 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
