Urban Air Pollution and Forests
Urban Air Pollution and Forests

Author: Mark E. Fenn

Publisher: Springer Science & Business Media

Published: 2002-05-02

Total Pages: 436

ISBN-13: 9780387953373

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With a population of more than eighteen million people, Mexico City is a major metropolitan area where the effects of urban development on air quality are of immediate concern. Air pollution exposures and effects on forests in the Mexico City Air Basin are in many respects similar to those reported in the Los Angeles, California Air Basin. Studies of air pollution impacts on forests in these two regions may serve as models for urban areas all over the world. Although scientists have studied air pollution and its effects on forests and vegetation in the Mexico City Air Basin for years, this book reviews and synthesizes this body of work for the first time. This synthesis is particularly valuable as air pollution increases at an alarming rate along with global urbanization. A thorough discussion of regional geology, climate and hydrology, historical natural resource utilization, and sociological factors provide the context for evaluating air pollution impacts on the highly valued forests surrounding this megacity. The environmental and ecological consequences of chronic exposure to biologically important pollutants are considered in various case studies. Finally, the editors discuss the state of air pollution research in the Mexico City Air Basin and the outlook for the health and sustainability of forests within the Basin.

Current Northeast Paleoethnobotany II
Current Northeast Paleoethnobotany II

Author: John P. Hart

Publisher: NYS State Museum

Published: 2008

Total Pages: 0

ISBN-13: 9781555572457

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"In northeastern North America our understandings of prehistoric human-plant relationships, the subject of paleoethnobotany, continue to change as more samples are taken, examined, and compared to extant records. The results of these analyses are no longer relegated to the appendices of archaeological site reports, but constitute important contributions to our understandings of Native American lifeways in the Northeast, on their own and in combination with other lines of evidence. This volume presents current work in this vital field of inquiry. Its chapters reflect how paloethnobotany in the Northeast is changing to include the analysis not only of macrobotanical, but also microbotanical, remains and new theoretical developments in our understandings of prehistoric human-plant relationships. Collectively, the chapters in this book provide a sense of the breadth of paleoethnobotanical research being carried out in the Northeast and serve as a benchmark by which progress in the field can be measured in the decades to come."--Publisher's description.

Operational and Environmental Consequences of Large Industrial Cooling Water Systems
Operational and Environmental Consequences of Large Industrial Cooling Water Systems

Author: Sanjeevi Rajagopal

Publisher: Springer Science & Business Media

Published: 2012-01-06

Total Pages: 491

ISBN-13: 1461416973

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The use of water for industrial purposes is of foremost importance. It is used as a coolant and industrial activities dealing with power generation, steel and iron, paper and pulp and oil require very large amounts of water. The industry, therefore, resorts to large scale abstraction of water from natural water bodies. This water is often treated with chemicals to combat operational problems like biofouling and corrosion. Such withdrawal and subsequent discharge of large amounts of water have the potential to impart significant impact on the recipient water body. The organisms drawn along with the cooling water, as well as those residing at the discharge zone, are subjected to a combination of mechanical, thermal and chemical stress on a continuous basis.

Attributes of Trees as Crop Plants
Attributes of Trees as Crop Plants

Author: Melvin G. R. Cannell

Publisher:

Published: 1985

Total Pages: 618

ISBN-13:

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Domestication. Perspectives on the evolutionary history of tree crops. The basis of selection, management and evaluation of multipurpose trees - an overview. Forest tree breeding and fruit tree breeding: strategies, achievements and constraints. Strategies for optimizing the yield of tree crops in suboptimal environments. Tree growth at cool temperaturea and prospects for improvement by breeding. The ideotype concept applied to forest trees. Definition and exploitation of forest tree ideotypes in Finland. The capacity for vegetative propagation in trees. The vegetative structure. Biometrical, structural and physiological relationships among tree parts. Dry matter partitioning in tree crops. Forest productivity in relation to carbon partitioning and nutrient cycling: a mathematical model. Prospects for manipulating vascular-cambium productivity and xylem-cell differentiation. Branching, crown structure and the control of timber production. Trees as producers of exudates and extractives. Trees as producers of fuel. Trees as fodder crops. Roots, symbionts and soils. Roots as a component of tree productivity. Improving tree crops using micro-organisms in designed systems. Trees as soil improvers in the humid tropics?. Exploiting tree crop-symbiont specificity. Flowering and fruiting. Promotion of flowering in the crops: different mechanisms and techniques, with special reference to conifers. Variability in flower initiation in forest trees. Reproduction behaviour of fruit tree crops and its implications for the manipulation of fruit set. Some attributes of nut-bearing trees of temperate forest origin. Trees in stands. Future fruit orchard design: economics and biology. Transpiration and assimilation of tree and agricultural crops: the 'omega factor'. The competition process in forest stands. Forest canopy design: biological models and management implications. Future forest design: economic aspects. Wood properties, and future requirements for wood products.