Rangeland Health : New Methods to Classify, Inventory, and Monitor Rangelands.
Clasificación: | Libro Electrónico |
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Autor principal: | |
Otros Autores: | |
Formato: | Electrónico eBook |
Idioma: | Inglés |
Publicado: |
Washington :
National Academies Press,
1993.
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Temas: | |
Acceso en línea: | Texto completo |
Tabla de Contenidos:
- ""RANGELAND HEALTH""; ""Copyright""; ""Preface""; ""Acknowledgments""; ""Contents""; ""Executive Summary""; ""STATE OF RANGELAND ECOSYSTEMS""; ""Questions About Methods""; ""Lack of Reliable Data""; ""Need to Know is Urgent""; ""PURPOSES OF NATIONAL ASSESSMENTS""; ""Standards for National Assessments""; ""DEFINITION OF RANGELAND HEALTH""; ""MINIMUM ECOLOGICAL STANDARD""; ""USE AND MANAGEMENT""; ""Categories for National Assessments""; ""METHODS TO ASSESS RANGELAND HEALTH""; ""Defining Boundaries""; ""Criteria and Indicators""; ""SOIL STABILITY AND WATERSHED FUNCTION""
- ""NUTRIENT CYCLING AND ENERGY FLOW""""RECOVERY MECHANISMS""; ""Research Needed""; ""NATIONAL INVENTORYING AND MONITORING SYSTEM""; ""Minimum Data Set""; ""Standardize Indicators and Methods""; ""National Sampling System""; ""Periodic Sampling Needed""; ""TRANSITION TO RANGELAND HEALTH ASSESSMENTS""; ""Intermediate Steps""; ""Preserving Continuity During the Transition""; ""CHALLENGE TO RANGE SCIENTISTS AND MANAGERS""; ""1 Rangelands are Important ""; ""RANGELAND MANAGEMENT AND USES""; ""CONCERN ABOUT THE STATE OF U.S. RANGELANDS""; ""Federal Management of U.S. Rangelands""
- ""Present State of Rangelands""""ASSESSMENTS OF RANGELANDS""; ""DEFICIENCIES OF ASSESSMENTS""; ""UTILITY OF CURRENT METHODS AND DATA""; ""URGENT NEED FOR NATIONAL ASSESSMENTS""; ""2 Rangeland Health ""; ""GOALS FOR NATIONAL ASSESSMENTS""; ""STANDARDS FOR RANGELAND ASSESSMENTS""; ""Rangeland Health""; ""Categories for Rangeland Assessments""; ""DEFINING BOUNDARIES""; ""THRESHOLDS BETWEEN ECOLOGICAL STATES""; ""PROCESSES OF CHANGE""; ""THRESHOLD OF RANGELAND HEALTH""; ""EARLY WARNING LINE""; ""MULTIPLE STATES AND TRANSITIONS""; ""ROLE OF RANGELAND HEALTH IN RANGELAND MANAGEMENT""
- ""Goal of Range Management""""Additional Information Needed to Determine Appropriate Management""; ""Rangeland in Extreme Environments""; ""3 Current Methods of Rangeland Assessment ""; ""DEVELOPMENT OF CURRENT THEORY AND PRACTICE OF RANGELAND ASSESSMENTS""; ""Early Development Of Survey Methods""; ""Standardization of Rangeland Surveys""; ""New Theoretical Foundation for Rangeland Surveys""; ""SUCCESSION AND CLIMAX COMMUNITIES""; ""SUCCESSIONAL STAGES AND RANGELAND ASSESSMENT""; ""SUCCESSIONAL STAGES AS CONDITION CLASSES""
- ""ADOPTION OF THE SUCCESSION-RETROGRESSION MODEL BY FEDERALAGENCIES""""APPLICABILITY OF THE SUCCESSION-RETROGRESSION MODEL""; ""LINKS BETWEEN OTHER BRANCHES OF ECOLOGY AND RANGELAND SCIENCE""; ""CURRENT AGENCY RANGELAND ASSESSMENT THEORY AND PRACTICE""; ""Site Classification""; ""RANGE SITE CLASSIFICATION""; ""ECOLOGICAL SITES AND TYPES""; ""Evaluation of Range Condition and Ecological Status""; ""RANGE CONDITION (SCS)""; ""ECOLOGICAL STATUS (USFS AND BLM)""; ""Trend and Apparent Trend""; ""NEW METHODS NEEDED TO ASSESS RANGELAND HEALTH""; ""Site Classification""