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Author: Angus R. Quinlan
Publisher: University of Nevada Press
ISBN: 0874177189
Category : Social Science
Languages : en
Pages : 249
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Book Description
Rock art is one of humankind’s most ancient forms of artistic expression, and one of its most enigmatic. For centuries, scholars and other observers have struggled to interpret the meaning of the mysterious figures incised or painted on natural rocks and to understand their role in the lives of their long-vanished creators. The Great Basin of the American West is especially rich in rock art, but until recently North American archaeologists have largely ignored these most visible monuments left by early Native Americans and have given little attention to the terrain surrounding them. In Great Basin Rock Art, twelve respected rock art researchers examine a number of significant sites from the dual perspectives of settlement archaeology and contemporary Native American interpretations of the role of rock art in their cultural past. The authors demonstrate how modern archaeological methodology and interpretations are providing a rich physical and cultural context for these ancient and hitherto puzzling artifacts. They offer exciting new insights into the lives of North America’s first inhabitants. This is essential reading for anyone interested in the petroglyphs of the American West and in the history of the Great Basin and its original peoples.
Author: Angus R. Quinlan
Publisher: University of Nevada Press
ISBN: 0874177189
Category : Social Science
Languages : en
Pages : 249
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Book Description
Rock art is one of humankind’s most ancient forms of artistic expression, and one of its most enigmatic. For centuries, scholars and other observers have struggled to interpret the meaning of the mysterious figures incised or painted on natural rocks and to understand their role in the lives of their long-vanished creators. The Great Basin of the American West is especially rich in rock art, but until recently North American archaeologists have largely ignored these most visible monuments left by early Native Americans and have given little attention to the terrain surrounding them. In Great Basin Rock Art, twelve respected rock art researchers examine a number of significant sites from the dual perspectives of settlement archaeology and contemporary Native American interpretations of the role of rock art in their cultural past. The authors demonstrate how modern archaeological methodology and interpretations are providing a rich physical and cultural context for these ancient and hitherto puzzling artifacts. They offer exciting new insights into the lives of North America’s first inhabitants. This is essential reading for anyone interested in the petroglyphs of the American West and in the history of the Great Basin and its original peoples.
Author:
Publisher: Government Printing Office
ISBN:
Category :
Languages : en
Pages : 68
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Book Description
Author: Dwight A. Smith
Publisher:
ISBN: 9780875952055
Category : History
Languages : en
Pages : 323
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Book Description
Handsome illustrations of more than two hundred bridges, including Columbia River Scenic Highway bridges, covered bridges, and magnificent coastal bridges.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309175003
Category : Science
Languages : en
Pages : 203
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Book Description
Because water in the United State has not been traded in markets, there is no meaningful estimate of what it would cost if it were traded. But failing to establish ground water's valueâ€"for in situ uses such as sustaining wetlands as well as for extractive uses such as agricultureâ€"will lead to continued overuse and degradation of the nation's aquifers. In Valuing Ground Water an interdisciplinary committee integrates the latest economic, legal, and physical knowledge about ground water and methods for valuing this resource, making it comprehensible to decision-makers involved in Superfund cleanup efforts, local wellhead protection programs, water allocation, and other water-related management issues. Using the concept of total economic value, this volume provides a framework for calculating the economic value of ground water and evaluating tradeoffs between competing uses of it. Included are seven case studies where ground-water valuation has been or could be used in decisionmaking. The committee examines trends in ground-water management, factors that contribute to its value, and issues surrounding ground-water allocation and legal rights to its use. The book discusses economic valuation of natural resources and reviews several valuation methods. Presenting conclusions, recommendations, and research priorities, Valuing Ground Water will be of interest to those concerned about ground-water issues: policymakers, regulators, economists, attorneys, researchers, resource managers, and environmental advocates.
Author: George H. Hargreaves
Publisher: Water Resources Publication
ISBN: 9781887201100
Category : Technology & Engineering
Languages : en
Pages : 202
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Book Description
IRRIGATION FUNDAMENTALS is a comprehensive text on the basic principles and practices of applied agricultural irrigation. Written over a period of more than 10 years, it is based on the authors'' extensive experience in farming, consulting, research, teaching, and other related agricultural activities. The book is for use by teachers of introductory courses in irrigation, farmers who have some basic technical knowledge, and for administrators who need a general understanding of irrigation as an aid for policy decisions in water resource development and planning. Various factors that influence crop yield and production including climate, fertility, water, drainage, and agronomic practices are addressed. The various irrigation methods such as border, basin, contour, furrow, sub, sprinkle, and drip or trickle are described; and conditions are given for selection of the appropriate method to use. Recent developments and new technology are included herein when they have obvious practical applications, but for the most part the material presented in this book is based on well established principles and practices. Much of the content is very practical and much is essentially nontechnical. Nevertheless, some of the material covered in this book goes beyond the basic concepts in an attempt to better describe the relationships and techniques employed by irrigation scientists and irrigation engineers.From the Preface: The future of the world depends very much on how we manage natural resources. Since the year 1900 there has been a ninefold increase in global carbon emissions from burning fossil fuels, and the world population has increased about 3.7 times in this century. Vast areas of forests have been destroyed, and irrigated lands now produce 40% of the food supply. Due to depletion of groundwater reserves and an increase in population, irrigated area per capita is declining. Consequently, the irrigation of additional alluvial lands is a strategic necessity for all of humankind. Much of the alluvial lands cannot be made productive without prior development of water resources through flood control, drainage, and irrigation. The production of electricity through hydropower and the production of alcohol fuel from irrigated crops, as has been practiced for many years in Brazil, can slow the increase in carbon emissions. Such diverse developments are typically not separable; rather, they must be considered as integral parts of a comprehensive development plan. The conservation of natural resources and increasing productivity of irrigated lands are also strategic necessities. Much of the current technology is highly transferable and crop yields can be significantly increased on lands already under irrigation.The authors have worked in many countries in connection with resource inventories, teaching, and the planning, development and use of irrigation as a tool for increasing production and providing employment. They have written extensively and have been honored for their achievements. They have considerable experience with everything from primitive low-technology irrigation developments to highly developed irrigation in the USA and in dozens of countries around the world. Both of the authors have dedicated their careers to teaching, research, and consulting in agricultural irrigation and water resources development and planning. It is their hope and expectation that this book will provide incentives for investigating and documenting land and water resources, improving development, increasing crop yields, conserving resources, and improving the environment. From the Table of Contents:Chapt. 1 - INTRODUCTION: Irrigation Fundamentals: - - A Definition of Irrigation - - Statistical Perspectives of Agricultural IrrigationChapt. 2 - FACTORS INFLUENCING CROP PRODUCTION: - - Introduction - - Temperature, Radiation, and Evaporative Potential - - Climate Change - - Soil Fertility and Fertilizers - - Water Availability and Distribution - - Soil Aeration and Drainage - - Plant Density, Spacing and Leaf Area Index - - Crop VarietyChapt. 3 - AGRICULTURAL SOILS: - - Introduction - - Soil Texture and Structure - - Soil Classification and Evaluation - - Bureau of Reclamation Land Classification - - Soil Age and Topography - - Soil Chemistry - - Infiltration Rates - - Soil-Water Relationships - - Equations for Soil Water Content - - Soil Water Potential - - Measuring Soil Water ContentChapt. 4 - EVALUATING IRRIGATION RESOURCES: - - Introduction - - Climate - - Hydrology - - Human and Other Factors - - Integrated DevelopmentChapt. 5 - IRRIGATION METHODS: - - Introduction - - Graded Border Irrigation - - Basin Irrigation - - Contour Levees - - Furrow Irrigation - - Sub-Irrigation - - Sprinkle Irrigation - - Drip or Trickle Irrigation - - Selecting an Irrigation Method - - Land Grading and Leveling - - Laser-Leveling Equipment and Practices - - Computing Diagonal Slopes - - Irrigation System EvaluationChapt. 6 - CROP WATER REQUIREMENTS: - - Introduction - - Direct Methods - - Indirect Methods - - Potential Evaporation - - Reference Evapotranspiration - - Extraterrestrial Solar Radiation - - Irrigation Requirements - - Crop CoefficientsChapt. 7 - IRRIGATION SCHEDULING: - - Introduction - - Allowable Water Depletion - - Monitoring Soil Water - - Scheduling Irrigations - - Rice Irrigation
Author: United States. National Archives and Records Service
Publisher:
ISBN:
Category : Archives
Languages : en
Pages : 140
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Book Description
Author: Patricia N. Manley
Publisher:
ISBN:
Category : Ecosystem management
Languages : en
Pages : 222
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Book Description
Monitoring protocols are presented for: landbirds; raptors; small, medium and large mammals; bats; terrestrial amphibians and reptiles; vertebrates in aquatic ecosystems; plant species, and habitats.
Author: John M. Volkman
Publisher:
ISBN:
Category : Columbia River
Languages : en
Pages : 268
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Book Description
Report to the Western Water Policy Review Advisory Commission.
Author: Mike Hudak
Publisher:
ISBN:
Category : Grazing
Languages : en
Pages : 424
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Book Description
Mike Hudak traveled throughout the West speaking with former employees of wildlife and land management agencies, and citizens who have long advocated for better management of our public lands. Western Turf Wars is a compliation of these accounts - testimonies that reveal how and why the management agencies have failed to protect our public lands. Underlying that management failure is the cowboy myth's social and political legacies.
Author: Hubert Howe Bancroft
Publisher:
ISBN:
Category : Idaho
Languages : en
Pages : 880
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Book Description
