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Author: Ronald K. Tew Publisher: ISBN: Category : Soil profiles Languages : en Pages : 28
Book Description
Soils were mapped on the 22,533 ha Desert Experimental Range, Utah, to determine the kind, extent, and distribution of major soils and soil groups, the type of vegetation associated with each soil group, and the correlation between herbage production and soil groups. The results indicated that Desert Experimental Range soils are primarily Haplocalcids, Torriothents, and Torrifluvents. They occur within the Temperate Desert and Temperate Steppe climatic types. Annual herbage production averages 250 kg per ha per year. High production years yield twice the average, often with many annual herbs, while low production years yield less than half the average. Species composition differs greatly on dissimilar soils and over time, but total production is similar for Haplocalcids, Torriothents, and Torrifluvents.
Author: Ronald K. Tew Publisher: ISBN: Category : Soil profiles Languages : en Pages : 28
Book Description
Soils were mapped on the 22,533 ha Desert Experimental Range, Utah, to determine the kind, extent, and distribution of major soils and soil groups, the type of vegetation associated with each soil group, and the correlation between herbage production and soil groups. The results indicated that Desert Experimental Range soils are primarily Haplocalcids, Torriothents, and Torrifluvents. They occur within the Temperate Desert and Temperate Steppe climatic types. Annual herbage production averages 250 kg per ha per year. High production years yield twice the average, often with many annual herbs, while low production years yield less than half the average. Species composition differs greatly on dissimilar soils and over time, but total production is similar for Haplocalcids, Torriothents, and Torrifluvents.
Author: Deborah C. Hayes Publisher: Springer ISBN: 1461418186 Category : Science Languages : en Pages : 666
Book Description
USDA Forest Service Experimental Forests and Ranges (EFRs) are scientific treasures, providing secure, protected research sites where complex and diverse ecological processes are studied over the long term. This book offers several examples of the dynamic interactions among questions of public concern or policy, EFR research, and natural resource management practices and policies. Often, trends observed – or expected -- in the early years of a research program are contradicted or confounded as the research record extends over decades. The EFRs are among the few areas in the US where such long-term research has been carried out by teams of scientists. Changes in society’s needs and values can also redirect research programs. Each chapter of this book reflects the interplay between the ecological results that emerge from a long-term research project and the social forces that influence questions asked and resources invested in ecological research. While these stories include summaries and syntheses of traditional research results, they offer a distinctly new perspective, a larger and more complete picture than that provided by a more typical 5-year study. They also provide examples of long-term research on EFRs that have provided answers for questions not even imagined at the time the study was installed.
Author: Ronald K. Tew
Author: Ronald K. Tew
Author: Sherel Goodrich
Author: Wyman C. Schmidt
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Author: Deborah C. Hayes
Author: Climate Change Science Program (U.S.)
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Author: Alvin L. Medina
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