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Author: Thor Thorson Publisher: Springer Nature ISBN: 3030900916 Category : Technology & Engineering Languages : en Pages : 552
Book Description
This book is the only comprehensive summary of natural resources of Oregon and adds to World Soil Book Series state-level collection. Due to broad latitudinal and elevation differences, Oregon has an exceptionally diverse climate, which exerts a major influence on soil formation. The mean annual temperature in Oregon ranges from 0°C in the Wallowa and Blue Mountains of northeastern Oregon to 13 °C in south-central Oregon. The mean annual precipitation ranges from 175 mm in southeastern Oregon to over 5,000 mm at higher elevations in the Coast Range. The dominant vegetation type in Oregon is temperate shrublands, followed by forests dominated by lodgepole pine, Douglas-fir, and mixed conifers, grasslands, subalpine forests, maritime Sitka spruce-western hemlock forests, and ponderosa pine-dominated forests. Oregon is divided into 17 Major Land Resource Areas, the largest of which include the Malheur High Plateau, the Cascade Mountains, the Blue Mountain Foothills, and Blue Mountains. The single most important geologic event in Oregon was the deposition of Mazama ash 7,700 years by the explosion of Mt. Mazama. Oregon has soil series representative of 10 orders, 40 suborders, 114 great groups, 389 subgroups, over 1,000 families, and over 1,700 soil series. Mollisols are the dominant order in Oregon, followed by Aridisols, Inceptisols, Andisols, Ultisols, and Alfisols. Soils in Oregon are used primarily for forest products, livestock grazing, agricultural crops, and wildlife management. Key land use issues in Oregon are climate change; wetland loss; flooding; landslides; volcanoes, earthquakes, and tsunamis; coastal erosion; and wildfires.
Author: Thor Thorson Publisher: Springer Nature ISBN: 3030900916 Category : Technology & Engineering Languages : en Pages : 552
Book Description
This book is the only comprehensive summary of natural resources of Oregon and adds to World Soil Book Series state-level collection. Due to broad latitudinal and elevation differences, Oregon has an exceptionally diverse climate, which exerts a major influence on soil formation. The mean annual temperature in Oregon ranges from 0°C in the Wallowa and Blue Mountains of northeastern Oregon to 13 °C in south-central Oregon. The mean annual precipitation ranges from 175 mm in southeastern Oregon to over 5,000 mm at higher elevations in the Coast Range. The dominant vegetation type in Oregon is temperate shrublands, followed by forests dominated by lodgepole pine, Douglas-fir, and mixed conifers, grasslands, subalpine forests, maritime Sitka spruce-western hemlock forests, and ponderosa pine-dominated forests. Oregon is divided into 17 Major Land Resource Areas, the largest of which include the Malheur High Plateau, the Cascade Mountains, the Blue Mountain Foothills, and Blue Mountains. The single most important geologic event in Oregon was the deposition of Mazama ash 7,700 years by the explosion of Mt. Mazama. Oregon has soil series representative of 10 orders, 40 suborders, 114 great groups, 389 subgroups, over 1,000 families, and over 1,700 soil series. Mollisols are the dominant order in Oregon, followed by Aridisols, Inceptisols, Andisols, Ultisols, and Alfisols. Soils in Oregon are used primarily for forest products, livestock grazing, agricultural crops, and wildlife management. Key land use issues in Oregon are climate change; wetland loss; flooding; landslides; volcanoes, earthquakes, and tsunamis; coastal erosion; and wildfires.
Author: National Research Council Publisher: National Academies Press ISBN: 0309255945 Category : Science Languages : en Pages : 274
Book Description
Tide gauges show that global sea level has risen about 7 inches during the 20th century, and recent satellite data show that the rate of sea-level rise is accelerating. As Earth warms, sea levels are rising mainly because ocean water expands as it warms; and water from melting glaciers and ice sheets is flowing into the ocean. Sea-level rise poses enormous risks to the valuable infrastructure, development, and wetlands that line much of the 1,600 mile shoreline of California, Oregon, and Washington. As those states seek to incorporate projections of sea-level rise into coastal planning, they asked the National Research Council to make independent projections of sea-level rise along their coasts for the years 2030, 2050, and 2100, taking into account regional factors that affect sea level. Sea-Level Rise for the Coasts of California, Oregon, and Washington: Past, Present, and Future explains that sea level along the U.S. west coast is affected by a number of factors. These include: climate patterns such as the El Niño, effects from the melting of modern and ancient ice sheets, and geologic processes, such as plate tectonics. Regional projections for California, Oregon, and Washington show a sharp distinction at Cape Mendocino in northern California. South of that point, sea-level rise is expected to be very close to global projections. However, projections are lower north of Cape Mendocino because the land is being pushed upward as the ocean plate moves under the continental plate along the Cascadia Subduction Zone. However, an earthquake magnitude 8 or larger, which occurs in the region every few hundred to 1,000 years, would cause the land to drop and sea level to suddenly rise.
Author: Susan Harrell Yee Publisher: Frontiers Media SA ISBN: 2832553664 Category : Science Languages : en Pages : 162
Book Description
Human well-being is inextricably linked to the condition of the natural environment. Environmental management decisions often aim to maintain ecosystems in a healthy and resilient condition while providing the ecosystem goods and services that humans want and need. Models, methods, frameworks, and metrics are needed to characterize and forecast the potential benefits from remediation, restoration, and revitalization that improve human health and well-being through the delivery of ecosystem services. However, ecosystems are complex, and layering on social and economic considerations can make environmental decision-making seem intractable. Dynamics of socio-ecological systems are complicated, making models a pivotal tool for identifying and quantifying relationships, assessing historical patterns, and forecasting alternative decision scenarios. The goal of this Research Topic is to leverage modeling approaches to provide science-based evidence, metrics, and frameworks and methods for quantifying how restored ecosystem goods and services lead to benefits for public health, community well-being, and economic vitality. Modeling approaches may range in complexity from conceptual models to statistical models to dynamic process models, empirically-derived to mechanistic to participatory. Research will evaluate connections between ecosystem condition, ecosystem services, and human health and well-being, and may include covarying socio-economic or biophysical factors that modify relationships between ecosystem health and perceived or realized benefits. Applications or case studies will demonstrate how to integrate community priorities with nature-based solutions to enhance benefits of environmental remediation, ecological restoration, community revitalization, and climate resilience decisions.
Author: John Dorney Publisher: Academic Press ISBN: 0128050926 Category : Science Languages : en Pages : 584
Book Description
Wetland and Stream Rapid Assessments: Development, Validation, and Application describes the scientific and environmental policy background for rapid wetland and stream assessments, how such assessment methods are developed and statistically verified, and how they can be used in environmental decision-making—including wetland and stream permitting. In addition, it provides several case studies of method development and use in various parts of the world. Readers will find guidance on developing and testing such methods, along with examples of how these methods have been used in various programs across North America. Rapid wetland and stream functional assessments are becoming frequently used methods in federal, state and local environmental permitting programs in North America. Many governments are interested in developing new methods or improving existing methods for their own jurisdictions. This book provides an ideal guide to these initiatives. - Offers guidance for the use and evaluation of rapid assessments to developers and users of these methods, as well as students of wetland and stream quality - Contains contributions from sources who are successful in academia, industry and government, bringing credibility and relevance to the content - Includes a statistically-based approach to testing the validity of the rapid method, which is very important to the usefulness and defensibility of assessment methods
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development Publisher: ISBN: Category : Federal aid to energy development Languages : en Pages : 1656
Author: George H. Hargreaves Publisher: Water Resources Publication ISBN: 9781887201100 Category : Technology & Engineering Languages : en Pages : 202
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. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development Publisher: ISBN: Category : Federal aid to energy development Languages : en Pages : 1502
Author: Thor Thorson
Author: Thor Thorson
Author: 
Author: 
Author: U.S. Fish and Wildlife Service
Author: National Research Council
Author: Susan Harrell Yee
Author: John Dorney
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development
Author: George H. Hargreaves
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development